FENECON Commercial 92 Cluster — Assembly and Operating Instructions

1. Information on these instructions

Personnel must have carefully read and understood these installation and service instructions before starting any work.

1.1. Manufacturer

FENECON GmbH
Gewerbepark 6
94547 Iggensbach
Germany

Phone: +49 (0) 9903 6280 0
Fax: +49 (0) 9903 6280 909
E-mail: service@fenecon.de
Internet: www.fenecon.de

1.2. Formal information on installation and service instructions

Reprinting, even in part, is only permitted with the permission of FENECON GmbH.

1.3. Version/revision

Table 1. Version/revision
Version/Revision	Change	Date	Name
2025.04.01	First draft	04/04/2025	FENECON PM
2025.04.02	Completion	14/04/2025	FENECON PM
2025.8.1	Integration split base	01/08/2025	FENECON TK/MR
2025.11.01	Integration of flood warning	03/11/2025	FENECON PM

1.4. Symbol conventions

Table 2. Symbol conventions

This symbol indicates an imminent danger. If this danger is not avoided, it can lead to death or serious injury.

This symbol indicates a potentially dangerous situation. If this dangerous situation is not avoided, it may result in minor or moderate injury.

This symbol indicates a warning. Failure to observe this warning may result in damage and/or destruction of the system.

This symbol indicates a note. It is recommended that the note be observed.

1.5. Structure of warning notices

If observed, warnings protect against possible personal injury and damage to property. The signal word to classifies the magnitude of danger.

Source of the danger
Possible consequences if not observed

Measures for avoidance/prohibitions

Danger sign
The danger sign indicates warnings that warn of personal injury.

Source of danger
The source of danger indicates the cause of the hazard.

Possible consequences of non-compliance
The possible consequences of ignoring the warning are e.g. crushing, burns or other serious injuries.

Measures/prohibitions
Measures/prohibitions include actions that must be taken to avoid a hazard (e.g. stopping the drive) or that are prohibited to avoid a hazard.

1.6. Terms and abbreviations

The following terms and abbreviations are used in the installation and service instructions:

Table 3. Terms and abbreviations
Term/Abbreviation	Meaning
AC	Alternating Current
BHKW	Combined heat and power plant (CHP)
BMS	Battery Management System
DC	Direct Current
EMS	Energy Management System
Energy-Meter	Electricity meter for the Inverter at the grid connection point
FEMS	FENECON Energy Management System
MPPT	Maximum Power Point Tracking — Finder for the maximum power point
GCP	Grid connection point
CPC	Circuit protective conductor
PV	Photovoltaic
RTE	Round-Trip-Efficiency (RTE) System efficiency; ratio of discharged to charged energy quantity
SG-Ready	Smart-Grid-Ready — Preparation of the Heat pump for external control
SoC	State of Charge State of Charge; The available capacity in a battery, expressed as a percentage of the nominal capacity.
SoH	State of Health — Ageing condition
VDE	Verband der Elektrotechnik Elektronik Informationstechnik e. V. German Association for Electrical, Electronic & Information Technologies
Widget	Component of online monitoring

1.7. Scope of delivery

Table 4. Scope of delivery
Item	Component	Amount	Comment
1	KACO 92 kW — Inverter	1
2	FENECON Commercial — BMS box (incl. FENECON Energy Management System)	1
3	FENECON Commercial — Parallel switch box	1
4	FENECON Commercial — Extension Box	1	up to 4, depending on the system configuration
5	FENECON BMS box	1	per battery tower
6	FENECON Battery Module	15	per battery tower, depending on the ordered capacity
7	FENECON Base (included with FENECON BMS box)	1	per battery tower
8	KDK 2PU CT	1

Table 5. Documents
Component	Comment
Installation and service instructions FENECON Commercial	Instructions for the installer
Quick start guide FENECON Commercial	Quick start guide for the installer
Operating instructions FENECON Commercial	Instructions for the user/end customer

1.8. Applicable documents

All documents listed in the appendix to these installation and service instructions must be observed. Cf. Applicable Documents

1.9. Availability

The operator must keep these installation and service instructions or relevant parts of them within easy reach in the immediate vicinity of the product.
If the product is handed over to another person, the operator shall pass these instructions on to that person.

2. Safety

2.1. Intended use

The FENECON electrical energy storage system is used to store electrical energy in rechargeable lithium iron phosphate battery modules (charging) and to provide electrical energy (discharging). This charging and discharging process takes place via a connected inverter. The system must only be used in compliance with the permissible technical data (see section Technical data).

FENECON power storage systems consist of various modules. In particular, these include a BMS (battery management system), the FENECON Energy Management System (FEMS), battery modules and bases. All processes of the electricity storage system are monitored and controlled by the FEMS.

Any other use is not an intended use.

2.2. Reasonably foreseeable misuse

All applications that do not fall within the scope of the intended use are considered misuse.

Work on live parts is generally not permitted. Electrical work must only be carried out by qualified electricians.

The following safety rules must be observed for all work on electrical components:

Disconnect.
Secure against restarting.
Check that there is no voltage.
Earth and short-circuit.
Cover or shield neighboring live parts.

Non-compliance with the safety rules is considered a reasonably foreseeable misuse.

Other misuses include in particular:

improper transportation, installation or assembly at a location, trial operation or operation that could damage the system.
change in the specified technical characteristics, including the individual components.
change or deviation of the connected load.
functional or structural changes.
operating the product in a faulty or defective condition.
improper repairs.
operation without protective devices or with defective protective devices.
disregarding the information in the original installation and service instructions.
fire, open light and smoking in the vicinity of the storage system.
insufficient ventilation at the installation site.
unauthorized changes and actions to the electrical energy storage system.
use as mobile energy storage.
direct use in a PV system (integration via an AC-coupled grid is possible).

2.3. Area of application — Electromagnetic compatibility (EMC)

The low-voltage equipment is intended for use in the following areas of application:

General public (public)

Use in other areas of application is not in accordance with the intended use.

2.4. Qualification of the staff

Qualified personnel must be deployed for the intended use, installation and maintenance of the system. The area of responsibility, competence and supervision of the personnel must be precisely regulated by the operator.

2.4.1. Trained electricians

Trained electricians include persons who:

are able to carry out work on electrical systems due to their technical training, knowledge and experience as well as knowledge of the relevant standards and regulations.
have been commissioned and trained by the operator to carry out work on electrical systems and equipment of the battery system.
are familiar with how the battery system works.
recognize hazards and prevent them by taking appropriate protective measures.

2.4.2. Service staff

Service personnel includes the manufacturer’s personnel or specialist personnel instructed and authorized by FENECON GmbH, who must be requested by the operator to work on the system (e. g. assembly, repair, maintenance, work on the batteries, etc.).

2.5. General information on the FENECON system

The product must be positioned in such a way that sufficient room for movement can be guaranteed for service and maintenance personnel in every phase of the product’s life. The service life of the product depends on the service life and maintenance intervals carried out by qualified personnel. The service life is particularly influenced by preventive maintenance and servicing.

The battery modules must only be installed and the cable connections made by trained electricians.
The electrical energy storage system must only be used under the specified charging/discharging conditions (see section Technical data).
Keep the electrical energy storage system away from children and animals.
Do not connect the plug contacts of the BMS box in reverse.
Do not short-circuit battery modules.
Only use the battery modules as intended.
- Improper use can lead to overheating, explosion or fire of the battery modules.
Read the instructions for installation and operation to avoid damage due to incorrect operation.
The battery modules may have insufficient cell voltage after a long storage period. If this is the case, please contact the service department
Do not expose the battery modules to high voltages.
Place the battery modules on level surfaces.
Do not place any objects on the FENECON battery towers.

2.5.1. Environmental influences

Keep the electrical energy storage system away from water sources.
Do not immerse the electrical energy storage system in water, moisten it or touch it with wet hands.
Set up/store the electrical energy storage system in a cool place.
Do not heat the electrical energy storage system.
Do not expose the electrical energy storage system to open fire.
Do not set up or use the electrical energy storage system near open fires, heaters or high-temperature sources.
- The heat can cause insulation to melt and the safety ventilation to be damaged. This can lead to overheating, explosion or fire on the battery modules.
No soldering work must be carried out on the electrical energy storage system. Heat introduced during soldering can damage the insulator and the safety venting mechanism and lead to overheating, explosion or fire of the battery modules.

2.5.2. Mechanical influences

The battery modules must not be dismantled or modified. The battery modules contain a safety mechanism and a protective device, damage to which can lead to overheating, explosion or fire of the battery modules.
Do not step on the electrical energy storage system.
Do not attempt to crush or open battery modules.
Do not apply any mechanical force to the electrical energy storage system.
- The battery modules can be damaged and short circuits can occur, which can lead to overheating, explosion or fire of the battery modules.
Do not throw or drop parts of the power storage system.
- Do not use defective or dropped battery modules.
Do not use the electrical energy storage system if changes in color or mechanical damage are detected during assembly, charging, normal operation and/or storage.
If the protective devices are damaged, abnormal charging currents and voltages can cause a chemical reaction in the battery modules, which can lead to overheating, explosion or even fire in the battery modules.

2.5.3. Installation, operation and maintenance

When carrying out maintenance, servicing and cleaning work, ensure that the product is switched off in a safe manner and secured against being switched on again. In addition, all instructions in these installation and service instructions must be followed.

Always observe the following safety instructions when installing, operating or maintaining the battery modules:

Installation/maintenance work and making cable connections must only be carried out by qualified personnel (trained electricians).
During maintenance work, stand on dry insulating objects and do not wear any metal objects (e.g. watches, rings and necklaces) during maintenance work/operation.
Use insulated tools and wear personal protective equipment.
Do not touch two charged contacts with a potential difference.
Measure the battery voltage with a multimeter and ensure that the output voltage is 0 V in off mode.
If an anomaly is detected, switch off the battery tower immediately.
Only continue the maintenance work after the causes of the anomaly have been eliminated.
The battery modules can cause electric shock and burns due to high short-circuit currents.
Do not touch the battery module connectors (+) and (-) directly with a wire or metal object (e. g. metal chain, hairpin). Excessive current can be generated in the event of a short circuit, which can lead to overheating, explosion or fire of the battery modules.

2.5.4. Fire protection

Do not expose the electrical energy storage system to direct sunlight.
Avoid contact with conductive objects (e. g. wires).
Keep heat and fire sources, flammable, explosive and chemical materials away from the electrical energy storage system.
Explosion hazard: Do not dispose of battery modules in a fire!

2.5.5. Storage

Area: Fireproof indoors/outdoors with suitable weather protection.
Air temperature: -20 °C to 40 °C.
Relative humidity: max. 50 % at +40 °C.
Do not store battery modules (lithium iron phosphate batteries) with flammable or toxic objects.
Store battery modules with safety defects separately from undamaged battery modules.

Storage longer than 12 months
Possible consequences: Deep discharge of the cells/defective battery.

External charging of the battery modules to nominal voltage — forced charging must be carried out, which is controlled via the FEMS. This must only be carried out by the manufacturer or by a company commissioned by the manufacturer.

2.5.6. Charging

Keep the SoC of the battery module below 30% for shipping and charge the battery module if it has been stored for more than 12 months.

2.6. Operating resources

2.6.1. Electrolyte solution of the battery modules

Electrolyte solution is used in the battery modules (lithium iron phosphate).
The electrolyte solution in the battery modules is a clear liquid and has a characteristic odor of organic solvents.
The electrolyte solution is flammable.
The electrolyte solution in the battery modules is corrosive.
Do not inhale the vapors.
If the electrolyte solution is swallowed, induce vomiting.
Leave the contaminated area immediately after inhaling the vapors.
Eye and skin contact with leaked electrolyte solution must be avoided.
Contact with electrolyte solution can cause severe burns to the skin and damage to the eyes.
- After skin contact: Immediately wash skin thoroughly with neutralizing soap and consult a doctor if skin irritation persists.
- After eye contact: Immediately flush eye(s) with running water for 15 minutes and seek medical advice.

Delayed treatment can cause serious damage to health.

2.7. Residual risk

Warning of electrical voltage

Work on electrical equipment may only be carried out by qualified electricians from the manufacturer or by specially authorized, trained electricians and in compliance with the safety regulations.
Maintenance work must not be carried out for 5 minutes after the power supply has been disconnected.
The customer must provide a mains disconnection device for the electrical power supply.

Unknown fault messages

Unknown faults and attempts to rectify them can lead to damage to the product.
If there is a fault that is not included in the fault list, inform customer service.

All doors, emergency exits and areas around the electrical energy storage system must remain clear; do not obstruct escape routes!

The condition of the floor outside the storage system is the responsibility of the user. However, the housing is sealed so that no electrolyte can escape.

2.8. Behavior in emergency situations

Proceed as follows in emergency situations:

Disconnect the electrical energy storage system from the grid.
Leave the zone of danger immediately.
Secure the area.
Inform those responsible.
Call a doctor if necessary.

2.9. Pictograms

Pictograms on the system indicate dangers, prohibitions and instructions. Illegible or missing pictograms must be replaced by new ones.

Table 6. Pictograms
Pictogram	Meaning	Description
	Warning of dangerous electrical voltage	Pictogram on the enclosure, and marking of components which do not clearly indicate that they contain electrical equipment which may be the cause of a risk of electric shock.
	General warning sign
	Battery charging hazard warning	Pictogram on enclosure and marking of components not clearly identified as containing electrical equipment that may give rise to a battery charging hazard.
	No naked flames; fire, naked source of ignition and smoking prohibited	Pictogram on the enclosure and marking of components that do not clearly indicate that they contain electrical equipment that may present a risk of naked flames, fire, naked sources of ignition and smoking.
	Protective earthing symbol
	Separate collection of electrical and electronic equipment
	Note instructions
	Use protective headgear
	Use protective footwear
	Use protective gloves
	CE mark
	Product is recyclable.

2.10. Operating materials/equipment

2.10.1. Electrolyte solution of the battery modules

Electrolyte solution is used in the battery modules (lithium iron phosphate).
The electrolyte solution in the battery modules is a clear liquid and has a characteristic odor of organic solvents.
The electrolyte solution is flammable.
The electrolyte solution in the battery modules is corrosive.
Contact with electrolyte solution can cause severe burns to the skin and damage to the eyes.
Do not inhale the vapors.
If the electrolyte solution is swallowed, induce vomiting.
Leave the contaminated area immediately after inhaling the vapors.
Eye and skin contact with leaked electrolyte solution must be avoided.
- After skin contact: Immediately wash skin thoroughly with neutralizing soap and consult a doctor if skin irritation persists.
- After eye contact: Immediately flush eye(s) with running water for 15 minutes and seek medical advice.

Delayed treatment can cause serious damage to health.

2.10.2. Electrical equipment

Work on electrical equipment must only be carried out by qualified electricians.
The five safety rules must be observed for all work on electrical components:
1. Disconnect.
2. Secure against restarting.
3. Check that there is no voltage.
4. Earth and short-circuit.
5. Cover or shield neighboring live parts.
Maintenance work must only be carried out by trained specialist personnel (service personnel).
Before starting work, carry out visual checks for insulation and housing damage.
The system must never be operated with faulty or non-operational electrical connections.
To avoid damage, lay supply lines without crushing and shearing points.
Only insulated tools must be used for maintenance on uninsulated conductors and terminals.
Control cabinets (e. g. inverter housing) must always be kept locked. Only authorized personnel with appropriate training and safety instructions (e. g. service personnel) should be allowed access.
The inspection and maintenance intervals for electrical components specified by the manufacturer must be observed.
To avoid damage, lay supply lines without crushing and shearing points
If the power supply is disconnected, specially marked external circuits may still be live!
Some equipment (e. g. inverters) with an electrical intermediate circuit may still carry dangerous residual voltages for a certain period of time after disconnection. Before starting work on these systems, check that they are de-energized.

2.11. Personal protective equipment

Depending on the work on the system, personal protective equipment must be worn:

Protective footwear
Protective gloves, cut-resistant if necessary
Protective eyewear
Protective headgear

2.12. Spare and wear parts

The use of spare and wear parts from third-party manufacturers can lead to risks. Only original parts or spare and wear parts approved by the manufacturer must be used. The instructions for spare parts must be observed. Further information can be found in the wiring diagram.

Further information must be requested from the manufacturer.

2.13. IT security

FENECON systems and their applications communicate and operate without an internet connection. The individual system components (inverters, batteries, etc.) are not directly connected to the internet or accessible from the Internet. Sensitive communications via the internet are processed exclusively via certificate-based TLS encryption.

Access to the programming levels is not barrier-free and is accessible at different levels depending on the qualifications of the operating personnel. Safety-relevant program changes require additional verification.

FENECON processes energy data of European customers exclusively on servers in Germany and these are subject to the data protection regulations applicable in this country.

The software used is checked using automated tools and processes established during development in order to keep it up to date and to rectify security-relevant vulnerabilities at short notice. Updates for FEMS are provided free of charge for life.

3. Technical data

3.1. General information

Table 7. Technical data — General
Description		Value/dimension
Installation/ *Environmental conditions	IP classification	IP55
	Operating altitude above sea level	≤ 2,000 m
	Installation/operating temperature	-20 °C to +60 °C
	Relative humidity (operation/storage)	0 to 100 %
	Battery operating temperature	-10 °C to +50 °C
	Optimal operating temperature of the battery	15 °C to +30 °C
	Cooling	Temperature-controlled fan
	Loudness	< 60 dB
Certification/guideline	Overall system	CE
	Inverter	VDE 4105:2018-11 TOR generator type A 1.1 VDE 4110:2018-11
	Battery	UN38.3 VDE 2510-50

3.2. Technical data — Inverter

Table 8. Technical data — Inverter
Description		Value/dimension
Inverter model		KACO blueplanet gridsave 92.0 TL3-S
AC connection	Grid connection	400 V, 3L/PE, 50/60 Hz
	Rated voltage	400 V
	Rated power	92000 VA
	Rated current	3 x 132.3 A
Efficiency	Max. Efficiency	Charging: 98.5 % — Discharging: 98.7 %
General	Protection specification	IP66
	Width \| Depth \| Height	699 \| 450 \| 719 mm
	Weight	80 kg

3.2.1. Dimensions

The dimensions are given in mm.

Image 1. Inverter — Dimensions

3.3. Technical data — Slave EMS box

Table 9. Technical data — Slave EMS box
Description	Value/dimension
Operating voltage DC	224 V to 672 V
Max. Current (battery)	50 A
Operating temperature	-10°C to 50°C
Protection specification	IP55 (plugged in)
Input voltage	100 V to 240 V/1.8 A/50 Hz to 60 Hz
Width \| Depth \| Height	506 \| 401 \| 157 mm
Weight	12 kg
Installation	stackable

3.3.1. Dimensions — Slave EMS box

The dimensions are given in mm.

Image 2. Dimensions — Slave EMS box

3.3.2. Slave EMS box — Terminal assignment

Image 3. Terminal assignment — Slave EMS box

Table 10. Terminal assignment — Slave EMS box
List item	Description
1	Battery connection to the inverter (MC4-Evo stor)
2	Communication output for parallel connection of several batteries
3	Connection to Cluster EMS box
4	Power supply to Slave EMS box
5	Earthing connection
6	For future applications (not used)

3.4. Technical data — Cluster EMS box

Table 11. Technical data — Cluster EMS box
Description	Value/dimension
Input voltage	100 V to 240 V \| 18 A \| 50 to 60 Hz
Operating temperature	-20 °C to 40 °C
Protection specification	IP55
Width \| Depth \| Height (in mm)	396 \| 155 \| 500
Weight	13 kg

3.4.1. Dimensions — Cluster EMS box

The dimensions are given in mm.

3.4.2. Terminal assignment — Cluster EMS box

Table 12. Terminal assignment — Cluster EMS box
Item	Description
1	Power supply for Cluster EMS box; potential-free contacts (max. 10 A, measured) (10-pin plug)
2	Communication — RS485, relay outputs; digital inputs (16-pin plug)
3	Connection — Customer network (LAN) RJ45 (network cable not included)
4	Communication — Slave-FEMS
5	For future applications (not used).
6	Earth connection

3.5. Technical data — Parallel box

Table 13. Technical data — Parallel box
Description	Value/dimension
Max. operating voltage Operating voltage	800 V
Max. Current (inverter)	150 A
Max. Current (battery)	50 A
Operating temperature	-20 °C to 40 °C
Protection specification	IP55
Width \| Depth \| Height (in mm)	606 \| 157 \| 639
Weight	26 kg

3.5.1. Dimensions — Parallel switch box

The dimensions are given in mm.

Image 4. Dimensions — Parallel switch box

3.5.2. Parallel switch box — Terminal assignment

Image 5. Terminal assignment — Parallel switch box

Table 14. Terminal assignment — Parallel switch box
Item	Description
1	Battery connection to the inverter
2	Battery connection for up to 5 battery towers
3	Earthing connection

3.6. Technical data — Extension box

Table 15. Extension box — Technical data
Description	Value/dimension
DC operating voltage	224 V to 672 V
Max. Current (battery)	50 A
Operating temperature	-10 °C ~ 50 °C
Protection specification	IP55 (plugged in)
Width \| Depth \| Height (in mm)	506 \| 401 \| 157
Weight	9 kg
Installation	stackable

3.6.1. Dimensions — Extension box

The dimensions are given in mm.

Image 6. Dimensions — Extension box

3.6.2. Extension box — Terminal assignment

Image 7. Pin assignment — Extension box

Table 16. Pin assignment — Extension box
Item	Description
1	Battery connection to the parallel switch box (MC4-Evo stor)
2	Communication output for parallel connection of several battery towers
3	Communication input for parallel connection of several battery towers
4	Earthing connection

3.7. Technical data — BMS box

Table 17. Technical data — BMS box
Description	Value/dimension
Max. operating voltage range	224 V to 672 V
Max. input/output current	50 A
Optimal operating temperature	15 to 30 °C
Operating temperature range	-20 to 55 °C
Protection specification	IP55 (stacked)
Width (incl. side panel)\| Depth \| Height	506 \| 401 \| 143 mm
Weight	13 kg
Installation	stackable/wall-mounted

3.7.1. Dimensions — BMS box

The dimensions are given in mm.

Image 8. Dimensions — BMS box

3.8. Technical data — FENECON battery module

Table 18. Technical data — Battery module
Designation	Value/dimension
Usable capacity	62.4 Ah/2.80 kWh
Rated voltage	44.8 V
Output voltage range	39.2 V to 50.4 V
Battery operating temperature range	-20 °C to +55 °C
Storage temperature range (over 7 days)	-30 °C to +60 °C
Storage temperature range (over 30 days)	-20 °C to +55 °C
Storage temperature range (cumulative up to 270 days)	-10 °C to +45 °C
Protection specification	IP55 (plugged in)
Weight	30 kg
Installation	stackable
Parallel connection	4 battery towers in parallel
Cooling	natural cooling
Shipping capacity	< 30 % SoC
Module safety certification	VDE 2510/IEC62619
UN transport test standard	UN38.3
Relative humidity during storage	5 % to 95 %

Storage longer than 12 months
Possible consequences: Deep discharge of the cells, defect of the battery module.

External charging of the battery modules to nominal voltage. This must only be carried out by the manufacturer or a company commissioned by the manufacturer.

3.8.1. Dimensions

The dimensions are given in mm.

Image 9. Dimensions — Battery module

The specified capacity values refer to one battery tower and are rounded to one decimal place.

3.9. Technical data — Base

Table 19. Technical data — Base
Designation	Value/dimension
Width (incl. side panel) \| Depth \| Height	506 \| 401 \| 84 mm
Weight	6 kg
Protection specification	IP55 (plugged in)
Installation	stackable

3.9.1. Dimensions — Base

The dimensions are given in mm.

Image 10. Dimensions — Base

3.10. Technical data — Split base (optional)

Table 20. Technical data — Split base
Designation	Value/dimension
Width (incl. side panel) \| Depth \| Height	1312 \| 401 \| 84 mm
Weight	11 kg
Protection specification	IP55 (plugged in)
Installation	stackable

3.10.1. Dimensions — Split base

The dimensions are given in mm.

Image 11. Dimensions — Split base

3.11. Technical data — Top box (with option: split base)

Table 21. Technical data — Top box
Description	Value/dimension
Width (incl. side panel) \| Depth \| Height	506 \| 401 \| 157 mm
Weight	9 kg
Protection specification	IP55 (plugged in)
Installation	stackable

3.11.1. Dimensions — Top box

The dimensions are given in mm.

Image 12. Dimensions — Top box

4. General description

FENECON Commercial 92 Cluster is an AC-coupled electrical energy storage system that can build its own power grid for consumer loads. Lithium iron phosphate batteries (LiFePO4) are used in this modular system for storing electrical energy.

4.1. System configuration — General overview

Image 13. System — Schematic diagram with optional components (shown without protective device)

4.1.1. Structure of an AC sub-system

system diagram commercial cluster AC system

Image 14. System structure as AC system (shown without protective device)

Table 22. Structure of an AC sub-system
Item	Description
1	Grid
2	Bi-directional meter
3	Energy meter
4	3-phase sensor or with PV inverter app
5	PV inverter
6	PV system
7	Sub-System 1
8	Cluster EMS box
9	Parallel switch box for sub-system 1
10	Inverter for sub-system 1
11	Subsystems 2-5
12	Parallel switch box for sub-system 2-5
13	Inverter for sub-system 2-5
14	Consumer loads

4.1.2. Required components

Depending on the system configuration, the following components are required. If up to five battery towers are connected in parallel, make sure that 15 battery modules are installed in each battery tower. In addition, a Cluster EMS box is required for the entire system.

Table 23. System configuration — Required components
Number of battery towers	Number of battery modules max.	BMS box (per tower)	Slave EMS box	Parallel switch box	Extension box
2	30	1	1	1	1
3	45	1	1	1	2
4	60	1	1	1	3
5	75	1	1	1	4

Image 15. Structure of the FENECON Commercial 92 electrical energy storage system with five battery towers

5. Assembly preparation

5.1. Scope of delivery

5.1.1. KACO blueplanet 92.0 TL3 — Inverter

The scope of delivery is listed in the Inverter manual.

5.1.2. FENECON Commercial 92 — Slave EMS box

Table 24. Scope of delivery — Slave EMS box
Amount	Description	Item no.
1	Slave EMS box	FEC011
2	Side panel	Part of complete set FEH050
1	Phoenix contact plug (power supply)
1	Jumper plug	Part of complete set FEH050
2	Network connector housing	Part of complete set FEH050
2	Filler plug, 8 mm	Part of complete set FEH050
1	Battery cable set (10 m)	FEC037
1	Earthing kit	Part of complete set FEC033
1	Communication cable Inverter to Slave; 10 m	Part of complete set FEC032
1	Installation and service instructions (for installers)
1	Quick start guide (for installers)
1	Operating instructions (for end customers)

5.1.3. FENECON Commercial 92 — Cluster EMS box

Table 25. Scope of delivery — Cluster EMS box
Amount	Description	Item no.
1	Cluster EMS box	FEC013
1	Wall bracket — Cluster EMS box	FEC031
4	Anchor with screw and washer	Part of complete set FEC033
7	Network connector housing	Part of complete set FEH050
9	Filler plug 8 mm	Part of complete set FEH050
2	Harting housing with cable gland (13-21 mm), multi-hole seal (4 x 8 mm) Harting housing with cable gland (19-25 mm), multi-hole seal (2 x 10 & 1 x 8 mm)	Part of complete set FEH050
1	Harting socket, 10-pin	Part of complete set FEH050
1	Harting insert, 16-pin (assembled)	Part of complete set FEH050
1	Earthing kit	Part of complete set FEC033

5.1.4. FENECON Commercial 92 — Parallel switch box

Table 26. Scope of delivery — Parallel switch box
Amount	Description	Item no.
1	Parallel switch box	FEC060 in combination with inverter
1	Wall bracket — parallel switch box	FEC031
4	Anchor with screw and washer	Part of complete set FEC033
1	two DC cables, 3 m	FEC034
1	Communication cable; inverter-EMS box; 10 m	FEC032
1	Earthing kit	Part of complete set FEC033

5.1.5. FENECON Commercial 92 — Extension box

Table 27. Scope of delivery — Extension box
Amount	Description	Item no.
1	Extension box	FEC012
2	Side panel	Part of complete set FEH059
2	two DC cables per set, 10 m	FEC037
1	Communication cable, 2 m	Part of complete set FEH059
1	Earthing kit	Part of complete set FEC033

5.1.6. FENECON Commercial 92 — BMS box/base

Table 28. Scope of delivery — BMS module/base
Amount	Description	Item no.
1	BMS box	FEH000
1	Base
2	Side panel (BMS box)	FEH051
2	Side panel (base)
4	Wall mounting — Mounting bracket	Part of connection set FEH052
4	Wall mounting — Mounting bracket (wall part)	Part of connection set FEH052
4	Bolt, M4 x 10	Part of connection set FEH052
4	Bolts for wall fastening, M6 x 12	Part of connection set FEH052

5.1.7. FENECON Commercial 92 — Battery module

Table 29. Scope of delivery — Battery module
Amount	Description	Item no.
1	Battery module	FEH020
2	Side panel	FEH051
2	Fixing plates	Part of connection set FEH053
4	Bolt, M4 x 10	Part of connection set FEH053

5.2. Tools required

The following tools are required for assembly of the system components:

Table 30. Tools required
Image	Description	Image	Description
	Pencil		Spirit level
	Impact drill or cordless screwdriver		Screwdriver set
	Meter stick		Side cutter
	Allen key, 3 mm		Set of flat spanners
	Crimping tool		Multimeter
	Pliers for cable glands		Protective eyewear
	Safety footwear		Dust mask
	Rubber mallet		Vacuum cleaner
	Wire stripper		Protective gloves
	Torque wrench		Stripping knife

6. Assembly

The cluster system consists of 2-5 inverters, each connected to 2-5 battery towers. Each sub-system consisting of an inverter and up to five battery towers is set up in the same way, connected to the Cluster EMS box for communication and connected to the customer’s distribution system on the AC side.

The following components must be installed:

Inverter
Battery tower with base, battery modules, BMS box, and FENECON Commercial 92 EMS box
- Battery tower with base, battery modules, BMS box and Extension box
Parallel switch box
Cluster EMS box

Before installation, carefully check that the packaging and products are undamaged and that all accessories listed in Chapter 5: [Preparing for installation] are included. If a part is missing or damaged, contact the manufacturer/dealer.

The structure of the cluster system is basically equal to the FENECON Commercial 92 system, with the difference that the first battery tower of each slave system has a Commercial Slave EMS box installed, which is then connected to a Cluster EMS box (MASTER).

6.1. Assembly — Inverter

The safety and installation regulations can be found in the inverter manual.

6.2. Installation — Parallel switch box

6.2.1. Parallel switch box — Safety instructions

Do not damage any cables and make sure that nobody steps on the cables or plugs! Damage can lead to serious malfunction!
If cables are fed in from the front, the customer must use suitable covers to protect the cables against the risk of tripping.

Ensure that all devices in the same network and the battery modules are integrated into the existing surge protection.

When drilling holes, avoid water pipes and cables laid in the wall.
Wear protective eyewear and a dust mask to prevent dust from being inhaled or getting into your eyes when drilling holes.
Make sure that the inverter is securely installed in case it falls down.
The DC switch lock of a suitable size should be prepared by the customer. The diameter of the lock is 5 mm. The lock may not be installed if the size is not appropriate.
Please refer to the supply documentation of the inverter.

Suitable protective covers must be fitted!
All local accident prevention regulations must be observed.

Image 16. Installation conditions — Parallel switch box

The parallel switch box must be installed away from direct sunlight, direct rain and snow.
The installation room must have permanent ventilation.
Maintain a clearance of at least 300 mm to the side, above and below the parallel switch box (cable ducts are not included here).
Maintain a clearance of at least 500 mm from the front of the parallel switch box.

Proceed as follows to install the parallel switch box on the wall:

To attach the parallel switch box, drill 8 mm holes for the enclosed screw anchors according to the specified dimensions.

Attach the wall bracket to the wall. Screw anchors and bolts are included for this purpose. Always check the condition of the wall to see whether the screw anchors can be used.

Hang the parallel switch box onto the wall bracket using the hanger on the back.
Then secure on the left-hand side using the bolts provided.

6.3. Assembly — Cluster EMS box

6.3.1. Cluster EMS box — Safety instructions

Do not damage any cables and make sure that nobody steps on the cables or plugs! Damage can lead to serious malfunction!
If cables are fed in from the front, the customer must use suitable covers to protect the cables against the risk of tripping.

When drilling holes, avoid water pipes and cables laid in the wall.
Wear protective eyewear and a dust mask when drilling to prevent dust from being inhaled or getting into your eyes when drilling holes.
Make sure that the Cluster EMS box is installed firmly.

Image 17. Installation conditions — Cluster EMS box

The Cluster EMS box must be installed protected from direct sunlight, direct rain and snow.
The room where the system is installed must have permanent ventilation.
A distance of at least 300 mm must be maintained to the side, above and below the Cluster EMS box (cable ducts are not considered here).
Maintain a distance of at least 500 mm from the front of the Cluster EMS box.

To install the Cluster EMS box on the wall, proceed as follows:

To attach the Cluster EMS box, drill 6 mm holes for the enclosed screw anchors according to the specified dimensions.

Attach the wall bracket to the wall. Screw anchors and screws are included for this purpose. Always check the condition of the wall to see whether the screw anchors can be used.

Hang the Cluster EMS box on the wall bracket using the hoop at the back.
Then secure on the left-hand side using the bolts provided.

6.3.2. Installation conditions and distances — Battery towers

Indoor or outdoor installation
We recommend installing the FENECON Commercial 92 — battery towers in a well-ventilated room without external heat sources. However, the battery towers can also be installed outdoors protected from the weather (e. g. garage).

Installation at 2000 m above sea level and in unventilated locations is not permitted.

Also inadmissible installation sites:

those with an explosive atmosphere.
Places where flammable or oxidizing substances are stored.
Wet rooms.
Places where salty moisture, ammonia, corrosive vapors or acid can penetrate the system.

The storage system should also be inaccessible to children and animals.

Image 18. Installation conditions — Battery towers

Battery towers must be installed away from direct sunlight and protected from direct rain and snow.
In conditions outside the optimum temperature range, the performance of the batteries is reduced. (optimum temperature range: +15 °C to +30 °C)

Image 19. Distances at the installation site — Battery towers

A lateral clearance of 300 mm from a wall and 300 mm between two battery towers is recommended.
Clearances of 300 mm from a wall are recommended at the front.
A distance of 200 mm from the ceiling is recommended.

If the recommended distances are not adhered to, this can make installation more difficult and may result in earlier derating.

6.4. Assembly — Battery tower

The steps for assembling the battery towers are identical in each case.

6.4.1. Safety instructions

Electric shock from live parts
Death or serious injury to the body and limbs from electric shock when touching live DC cables connected to the electrical energy storage system.

Before starting work, de-energize the inverter, the BMS box and the battery modules and secure them against being switched on again.
Wait at least 5 minutes after switching off before starting work on the inverter.
Observe all the manufacturer’s safety instructions in section 2: Safety.
Do not touch any exposed live parts or cables.
Do not pull the terminal strip with connected DC conductors out of the slot under consumer load.
Wear suitable personal protective equipment for all work.

Electric shock in the absence of overvoltage protection
Death or serious injury to the body and limbs from electric shock due to overvoltage (e.g. lightning strike) transmitted via the network cables or other data cables into the building and to other connected devices in the same network due to lack of overvoltage protection

Ensure that all devices in the same network and the battery modules are integrated into the existing surge protection.
When laying network cables or other data cables outdoors, ensure that suitable overvoltage protection is in place when the cables from the inverter or battery tower (battery modules) pass from the outdoor area into a building.
The Inverter’s Ethernet interface is classified as "TNV-1" and offers protection against overvoltages of up to 1.5 kV.

Fire and explosion
Death or serious injury to the body and limbs due to fire or explosion; in the event of a fault, an ignitable gas mixture may be produced inside the battery module. Switching operations in this condition can cause a fire inside the product or cause an explosion.

In the event of an error, do not carry out any direct actions on the electrical energy storage system.
Ensure that unauthorized persons do not have access to the electrical energy storage system.
Disconnect the battery modules from the inverter using an external disconnecting device.
Switch off the AC circuit breaker or, if it has already tripped, leave it switched off and secure it against being switched on again.
Only carry out work on the inverter (e.g. troubleshooting, repair work) with personal protective equipment for handling hazardous substances (e.g. protective gloves, eye and face protection and respiratory protection).

Fire and explosion with deeply discharged battery modules
Death or serious injury to the body and limbs due to electric shock when touching a live meter housing: An overvoltage can damage a meter and lead to a voltage being applied to the meter housing.

Before commissioning the system, ensure that the battery modules are not deeply discharged.
Do not operate the system if the battery modules are deeply discharged.
If the battery modules are deeply discharged, contact Service.
Only charge deeply discharged battery modules as instructed by the Service.

Toxic substances, gases and dusts
Damage to electronic components can result in toxic substances, gases and dusts inside the inverter. Touching toxic substances and inhaling toxic gases and dusts can cause skin irritation, chemical burns, breathing difficulties and nausea.

Only carry out work on the inverter (e.g. troubleshooting, repair work) with personal protective equipment for handling hazardous substances (e.g. protective gloves, eye and face protection and respiratory protection).
Ensure that unauthorized persons do not have access to the Inverter.

Arcs due to short-circuit currents
Death or serious injury to the body and limbs due to burns, heat development and electric arcs due to short-circuit currents from the battery modules.

Before carrying out any work on the battery modules, de-energize the battery modules.
Observe all safety instructions of the battery manufacturer.

Destruction of a measuring device due to overvoltage
Death or serious injury to the body and limbs due to electric shock when touching a live housing of a measuring device. Overvoltage can damage a measuring device and lead to voltage being applied to the housing of the measuring device.

Only use measuring devices with a DC input voltage range of at least 1000 V or higher.

Hot surfaces
Injuries to the body and limbs due to burning on hot surfaces: The surface of the inverter can become very hot.

Mount the inverter in such a way that it cannot be touched accidentally.
Do not touch hot surfaces.
Before starting work, wait 30 minutes until the surface has cooled down sufficiently.
Observe the warning notices on the inverter.

Weight of the battery modules
Injuries to the body and limbs due to crushing if dropped during transportation or installation of the battery modules.

Carefully transport and lift the battery modules.
Note the weight of the battery modules and its center of gravity.
Wear suitable personal protective equipment for all work on the battery modules.

Sand, dust and moisture
Ingress of sand, dust and moisture can damage the inverter and impair its function.

Only install battery towers where the humidity is within the limit values and the environment is free of sand and dust.

Electrostatic charging
Touching electronic components can damage or destroy a battery tower due to electrostatic discharge.

Ground yourself before touching a component.

Cleaning agents
The use of cleaning agents can damage the inverter and/or its parts.

Only clean battery towers and all parts of the inverter with a cloth moistened with clean water.

Installation site

It is recommended to install the battery towers indoors.
If installed outdoors, weather protection (sun and precipitation protection) must be provided.
Avoid dirt and dust during assembly.
Do not install battery towers in an area that is at risk of flooding.
Do not install battery towers in very damp areas (e.g. bathrooms).
Do not install battery towers where the ambient conditions are outside the permissible values (Section 3: Technical data).
Keep battery towers away from heat sources and fire.
Ensure direct contact between the battery module housing and the ambient air and do not cover or shield the battery module.

Installation

Wear protective eyewear, insulating gloves and protective footwear when installing the battery modules.
Remove all conductive jewelry (e. g. watches, bracelets, rings).

Proceed as follows to set up a battery tower:

The battery tower is installed stackable in front of a wall on a solid and level floor.
The distance to the wall must be 40 to 65 mm so that the wall bracket can be fitted correctly.

Place the base on the feet at the installation location (maintain a clearance of 40 to 65 mm from a wall).

Place a battery module on the base, paying attention to the plug-in bolts and positioning holes.
A black protective film may be stuck to the electrical connectors of the battery. If present, remove this before plugging together.

A maximum of 15 battery modules can be stacked on one base.

Install all remaining battery modules in the same way.

Electric shock
Death or serious injury to the body and limbs due to electric shock.

Ensure that the circuit breaker of the BMS box is switched off before installing the BMS box.

Place the FENECON Commercial 92 BMS box on the last battery.

6.4.2. Assembly — Slave EMS box and Extension box

Attach the Slave EMS box to the 1st battery tower.

Attach the FENECON Commercial 92 Extension box to all other battery towers.

Fit the T-piece and the bracket with the enclosed M6 bolt.

Hook in the mounting rails of the Slave EMS box (wall side) and mark the holes for the wall bracket on the wall. (see previous picture)
Drill the holes and screw the wall bracket to the wall.
Hook in all other rails alternately left/right one module lower and screw on with the enclosed bolts.
The following bracket arrangement is recommended for mounting the battery towers.

Insert the side panels of the base, the battery modules, the BMS box and the Slave EMS box.

Image 20. Arrangement of the module fastening

6.5. Installation — Battery tower on split base

The split base can only be used with battery modules with item number FEH021.

The split base is used for a larger footprint installation of a battery tower, which reduces its height and enables installation in rooms with low ceilings.

Proceed as follows to set up a battery tower with a split base:

The battery tower is installed stackable in front of a wall on a solid and level floor.
The clearance to the wall must be 40 to 65 mm so that the wall bracket can be fitted correctly.

Place the base on the feet at the installation location (maintain a clearance of 40 to 65 mm from a wall).

Place a battery module on the base, paying attention to the plug-in bolts and positioning holes.
A black protective film may be stuck to the electrical connectors of the battery. If present, remove this before plugging together.

A maximum of 15 battery modules can be mounted on one split base.
Ensure that the modules are evenly distributed on both sides of the split base.
The difference in tower height must not exceed 5 modules.
→ If this cannot be complied with, a maximum of 10 battery modules must be stacked on one side of the system.

Install all remaining battery modules in the same way.

Electric shock
Death or serious injury to the body and limbs due to electric shock.

Ensure that the circuit breaker of the BMS box is switched off before installing the BMS box.

Place the FENECON BMS box on the last battery.
It does not matter which of the two towers on the split base the FENECON BMS box is placed on.

Attach the FENECON EMS box to the BMS box.

Place the Top box on the second tower.

Place the FENECON extension box on the top of all other split sockets.

Fit the T-piece and the bracket with the enclosed M6 bolt.

Hook in the fixing rails of the EMS box and the Top box (wall side) and mark the holes for the wall bracket on the wall.
Drill the holes and screw the wall bracket to the wall.
Hook in all other rails alternately left/right one module lower and fasten with the enclosed bolts.
The arrangement of the mounting brackets shown here is recommended for attaching the battery towers.

See graphic Arrangement of module mounting — Split base for installation details.

Attach the side panels of the split base, the battery modules, the BMS box, the EMS box and the Top box.

split base fixing brackets configuration

Image 21. Module mounting arrangement — Split base

6.6. Electrical installation

6.6.1. Earthing the components

Cluster EMS box

The Cluster EMS box must be grounded to the earth circuit connector.
At least a 4 mm² grounding cable must be used.
Use the earthing point of the Cluster EMS box for this.

Slave EMS and Extension box

The battery towers must be grounded directly to the earth circuit connector.
Use at minimum a 10 mm² grounding cable.
Use the earthing points of the Slave EMS box(es) and Extension box(es) for this (red).

Parallel switch box

The parallel switch box must also be grounded directly to the earth circuit connector.
At least a 25 mm² grounding cable must be used.
Use the earthing points of the parallel switch box for this (red).

The cross-section of the earthing must be at least 10 mm². + → The inverter and the battery towers must be earthed individually to the equipotential bonding.

6.6.2. Connection and wiring of the KACO Inverter

2024 09 Commercial Anlage AC Anschluss allgemein

Image 22. AC connection — General

Table 31. Components for AC connection (not included in the scope of delivery)
Item	Description
1	Bi-directional meter provided by the energy supplier
2	Inverter fuse (3-pole). (see inverter manual)¹
3	Fuse for consumer loads with RCD type A and suitable MCBs
4	KACO inverter 92 kW
5	Battery towers
6	Fuse protection maximum C6 or C10 1-pole
7	Consumer loads
8	Grid connection
9	Earth circuit connector

¹ The currently valid national regulations, the specifications of the associated network operator and the manufacturer’s specifications must be observed.

The manufacturer’s manual supplied with the inverter must be used for the AC connection of the inverter.

6.6.3. Connection and wiring of the 3-phase sensor without current transformer

(KDK 2PU CT)

Image 23. AC connection — Energy meter

Table 32. Components for AC connection
Item	Description
1	Bi-directional meter from energy supplier
2	Split-core CT (directly behind grid operator meter, not included in standard scope of delivery)
3	Energy meter
4	Fuse for the energy meter (recommended) B6 3-pole
5	Grid
6	Cluster EMS box

Please note:
The current transformers are not included in the scope of delivery! (Online: https://www.kdk-dornscheidt.de/produktkategorie/wandler/). Using the KDK meter as an example, the transformer ratio is 1 or 5. You can read the transformer ratio on the current transformers installed on site (see e. g. type plate).

To install the meter, use the installation and configuration instructions — FEMS package 3-phase sensor without current transformer (KDK 2PU CT): https://docs.fenecon.de/de/fems/fems-app/installationsanleitungen/KDK_2PU_CT_Installationsanleitung.html

The Modbus communication available with the 2PU CT takes place via a serial RS485 interface (2 or 3 wire), which enables the device to be operated from FEMS. In the standard configuration, 64 devices can be connected to a PC or a controller over 1000 meters with one RS485 interface.

The connections for Modbus communication are located above the meter, in the front row of terminals.

Image 24. Connection — RS-485

COM RS-485 connection from the FEMS direction
Data conductor Positive (+) (A conductor)
Data conductor Negative (-) (B conductor)
Minus (-) contact
Plus (+) Contact

Passing the cable through one of the four holes in the multi-hole seal.

Insert the cable through the bolt connection and the multi-hole seal into the Harting housing.

The other end with two open pins is connected to the Harting plug (16-pin — A) at terminal 3/4.
1. Connect the core with white insulation to terminal 3.
2. Connect the core with brown insulation to terminal 4.

Then screw the socket into the Harting housing.
Close the other openings in the bolt connection with the enclosed filler plugs (8 mm).
Provide strain relief for the cable by tightening the bolt connection.

Close the remaining feed-throughs of the multi-hole seal with the enclosed filler plugs (8 mm) and tighten the screw connection.
Connect the plug to the Cluster EMS box.
Lock the plug at the top and bottom through the holders.

6.6.4. DC cable from the battery towers to the parallel switch box

Use the enclosed 10 m DC cable between the battery towers and the parallel switch box.
Connect the cables to the battery (BAT OUT) and to the parallel switch box (BAT 1 to 5).
Connect plus (+) to plus (+) and minus (-) to minus (-).

Use the enclosed 3 m DC cable for the connection between the parallel switch box and the inverter.
Connect the cables to the parallel switch box (INV) and insert them into the inverter using the appropriate bolt connections.
Refer to the inverter manual for this.

The DC plugs used on the battery side are not compatible with standard MC4 plugs.

6.6.5. Communication between inverter and Slave EMS box

To seal the network connection, insert the enclosed 10 m network cable into the plug and bolt it connection.

Make sure that the network connector protrudes approx. 3 mm beyond the bayonet catch at the front.
The jumper plug of the battery can serve as a reference for the position of the network plug.

Connect the network cable to the INVERTER port of the Slave EMS box.

Feed the other end of the network cable through the bolt connection of the inverter and connect it to the network port (4 — Ethernet for DHCP network connection).
Refer to the inverter manual for more information.

6.6.6. Communication between the batteries

All enclosed network cables must be used for communication between the battery towers.
The first network cable must be plugged in and locked (green) between the EMS box (PARALLEL OUT) and the first Extension box (PARALLEL IN).
Likewise on all other towers, always between PARALLEL OUT and PARALLEL IN (blue/orange/yellow).
At the last tower, plug the jumper plug into PARALLEL OUT (red).

6.6.7. Communication to the Cluster EMS box

Communication between the individual Slave EMS boxes is not established via the customer network; instead, the up to five inverters are connected to the Cluster EMS box.

To seal the network connections, insert the cable into the connector and bolt it in place. Only the multi-hole seal and the bolt connection are required.

If the battery tower is installed indoors, this step can be skipped. And the network cable can be plugged in directly.

Make sure that the network connector protrudes approx. 3 mm beyond the bayonet catch at the front.
As an example, the jumper plug of the battery can serve as a reference for the position of the network connector.

For the Internet connection and for the system configuration, connect the network cable to the LAN port of the battery and the other end of the cable to the slave ports on the Cluster EMS box. Note the numbering of the ports from 1-5.

The system does offer WiFi functionality.

6.6.8. Communication with the customer network

To seal the network connections, insert the cable into the connector and bolt it in place. Only the multi-hole seal and the bolt connection are required.

If the battery tower is installed indoors, this step can be skipped. And the network cable can be plugged in directly.

Make sure that the network connector protrudes approx. 3 mm beyond the bayonet catch at the front.
As an example, the jumper plug of the battery can serve as a reference for the position of the network connector.

For internet connection and system configuration, connect the network cable to the LAN port of the battery and the other end of the cable to the customer’s network.

The system does offer WiFi functionality.

6.6.9. AC connection of the FENECON Slave EMS box

An external 230-V-power-supply is required to supply the FENECON EMS box.
The purpose of this is to avoid straining the empty battery with additional consumer loads. This can occur particularly in winter when there is no sunshine or when there is snow on the PV system.

Use the enclosed plug for AC supply.
Proceed according to the enclosed instructions.

Plug the connector into the Slave EMS box.

6.6.10. AC connection of the FENECON Cluster EMS box

Feed the cable through the smaller hole of the multi-hole seal.
A cross-section of 3 x 1.5 mm² is recommended.
Make sure that the housing with the 3-hole seal is used. The other housing will be needed later.

Insert the cable through the bolt connection and the multi-hole seal into the Harting housing.

Harting socket insert, 10-pin, with cable.
- Connect L to 1.
- Connect N to 2.
- Connect PE to PE.

The other pins are for the integrated relay contacts.
If these are not used, you can mount the socket inside the housing using bolts.
Close the remaining feed-throughs of the multi-hole seal with the enclosed filler plugs (10 mm) and tighten the screw connection.

Connect the plug to the Cluster EMS box.
Lock the plug at the top and bottom through the holders.

7. Capacity expansion of the system

The capacity can also be expanded at a later date; there is no time limit here.

The maximum capacity is not reached with additional new battery modules, as new modules are equal to the old modules.

7.1. Capacity expansion of the battery tower
by one or more battery modules

If the electrical energy storage system is expanded with additional battery modules after commissioning, proceed as follows:

After a capacity expansion, the commissioning wizard must be carried out again.

Open the Online Monitoring.
In order for the new modules to synchronize faster with the existing modules, an equal state of charge is required (30 % SoC). The electrical energy storage system automatically prepares itself if the state of charge does not have the same SoC.

Click on the "Electrical energy storage system" widget in Online Monitoring.

Activate the "Capacity expansion" function in Online Monitoring under Electrical energy storage system. The "Capacity expansion" is activated when the blue bar is displayed.
You can now choose between "Immediate start" and "Planned extension". With the two options, the battery is charged or discharged to 30 %.
When the state of charge is reached, charging/discharging is stopped and the charge level of 30 % is maintained.

If you select "Planned extension", you can specify the planned day and time. In this example, 24.05.2024 and the time of 09:00 were selected. At this time, the battery is expected to be charged or discharged to reach 30 % for the "Planned extension".

You must then confirm your desired settings by clicking on the blue tick. The desired extension will be saved and, depending on the option selected, implemented immediately or later at a specific time.

Then run the commissioning wizard again.

The capacity can also be extended at a later date; there is no time limit here. You will not reach the full capacity with the new battery module, as the new module will equalize with the old modules.

If the battery tower is extended by additional battery modules after several weeks or months, the following procedure must be followed:

29-30 % SoC

Charge/discharge the system to a charge level of 29-30 %; then switch off.

Switch off the entire system. The exact procedure is described in the section [Switching off].
- Set the battery fuse switch to OFF.
- DC switch of the inverter to OFF. AC fuse on the grid and emergency power side to OFF.

Remove the top three side panels on each side.
Remove the latch up to the first battery module on both sides.

Remove the FEMS box and BMS box and place them on their side. To do this, screw the wall bracket of the BMS box from the wall.

Attach new battery module.

Proceed as described in section [Assembly — Battery tower 1 with FEMS box], step 8.
- Attach the FENECON BMS box.
- Attach the FEMS box.
- Attach the locks.
- Attach the side covers.

If the exact voltage value of the old and new battery modules has not been matched, SoC jumps will occur when the battery is charged and discharged. This means that the full capacity is temporarily not available.
The greater the voltage difference between the "old" and "new" batteries, the longer it can take until there are no more SoC jumps and the full capacity is available.

7.2. Capacity expansion of the system
by one or more battery towers

The capacity of the system can be subsequently expanded by one or more battery towers with the same capacity. There is no time limit here.

The full capacity is not achieved with new battery modules, as the new modules become similar to the old modules.

Proceed as follows before the extension:

Activate the "Capacity expansion" function in Online Monitoring under Electrical energy storage system.
The battery is charged/discharged to 30 %. When the state of charge is reached, charging/discharging is stopped and the charge level is maintained.

Switch off the entire system. The exact procedure is described in detail in the section [Switching off].
→ Fuse switch of the battery to OFF.
→ AC fuse of the inverter to OFF.

Assembly of the new battery towers as described from section Assembly — Battery tower 1 with FEMS box and section [Initial commissioning].
Everything can then be switched on again as described in the [Switching on the system] section.

Run the commissioning wizard again.

If the exact voltage value of the old and new battery towers has not been matched, the new batteries will not be connected.
This is not displayed as an error, but it can happen that the SoC displays of the individual battery towers show different charge levels.
When the charge levels have equalized after a charging cycle, the last battery towers also switch on.
The battery towers work independently, so the flashing frequency of the different towers may vary. The SoC display of the individual towers may also differ briefly.

8. FEMS extensions

For the following FEMS extensions, the integrated relays can be used directly on the (first) battery tower.
Various pins on the Harting plugs are provided for this purpose.

Harting plug 10-pin: 3 x free relay channels (max.: 230 V; 10 A)
Harting plug 16-pin: 2 x control contacts (max.: 24 V; 1 A)
- 3 x digital input
- 1 x digital input for § 14a
- 1 x analog output (0-10 V)

It may not be possible to connect and operate all apps at the same time.
For more information on the following apps, please visit our homepage.

100 https://www.fenecon.de/fems-apps/

If the integrated relays are not sufficient, an external 8-channel relay board can be connected via Ethernet.

The pin assignment of the Harting plug (10-pin) is shown in detail below.

Table 33. Connector — Pin assignment — Power connector
Item	Description
1	230 V supply for internal components
2	Relay 1 (230 V; 10 A)
3	Relay 2 (230 V; 10 A)
4	Relay 3 (230 V; 10 A)
5	Neutral conductor connection (required for integrated meter)
6	PE connection

The pin assignment of the Harting plug (16-pin) is shown in detail below.

Table 34. Connector — Pin assignment: Control connector
Item	Description
1	RS485 connection — Inverter
2	RS485 connection — External devices
3	Analog output (0 to 10 V)
4	12 V DC (12 V; GND)
5	3 x digital inputs
6	Digital input for § 14a
7	Relay 5 (24 V; 1 A)
8	Relay 6 (24 V; 1 A)
9	PE connection

8.1. Connection of a heat pump via "SG-Ready"

The integration of an "SG-Ready" (Smart Grid-ready) heat pump is an advanced form of sector coupling of electricity and heat - often also referred to as a "power-to-heat" application. The control system ensures that the heat pump slightly overheats the thermal energy storage system at times when cheap (solar) electricity is available in order to save electrical energy at times when there is no cheap surplus electricity.

The internal relay contacts 5 and 6 can be connected via pins 5/6 and 7/8 on the Harting plug (16-pin — C).
For detailed information on connecting the heat pump, please refer to the manufacturer’s installation instructions.

After installing the components, the app still needs to be installed.
To do this, proceed as described in the section Activation of the app in the FEMS App Center.

8.2. Connection of a heating element with a maximum of 6 kW

The integration of an electric heating element is the simplest and cheapest form of sector coupling of electricity and heat — often also called a "power-to-heat" application.

If the capacity of the electrical energy storage system is exhausted, self-generated energy must be fed into the public grid with low remuneration. In these cases, it often makes sense to use the surplus current for water heating (e. g. for hot water buffer tanks, pool heating, etc.). This way, other energy sources (e. g. wood or oil) can be saved.

So that each phase of the heating element can be controlled separately, each phase must be connected individually to a relay.
To do this, connect phase 1 (brown) to pin 3 on the Harting plug (10-pin). Continue from pin 4 to the heating element. Use pins 5/6 and 7/8 for phase 2 (black) and phase 3 (gray).
Loop through the neutral conductor N via pin 9/10.
A cable (5G1.5) from the sub-distribution board to the Harting plug and a cable (5G1.5) from the Harting plug to the heating element are recommended.
For detailed information on connecting the heating element, please refer to the manufacturer’s installation instructions.

Ensure that three different phases are used. If only one phase is used, damage may occur.

After installing the components, the app still needs to be installed.
To do this, proceed as described in the section Activation of the app in the FEMS App Center.

Manual mode is only suitable for temporary operation. For permanent operation, the external relay control must be used.

8.3. Control of a heating element greater than 6 kW
(control via external relay)

The externally installed relays must be laid out according to the power of the installed heating element.

So that each phase of the heating element can be controlled separately, each phase must be connected individually to the internal relay via an additional external relay.
Connect L1 to pin 3 via a MCB B6 fused. Route phase L1 from pin 4 to the external relay and connect to A1. A2 must be connected to neutral.
Proceed in the same way as step 2 with the other two phases. Connect K2 and K3 via pins 5/6 and 7/8.

As an alternative to L2/L3, L1 can of course also be looped through, or:
Alternatively, control the contactors/relays with 24 V. If another voltage source is used, do not connect A2 to N.

The power supply of the heating element must then be connected to the switching contacts of the relays.
For detailed information on connecting the heating element, please refer to the manufacturer’s installation instructions.

After installing the components, the app still needs to be installed.
To do this, proceed as described in the section Activation of the app in the FEMS App Center.

8.4. Controlling a CHP unit

The integration of a combined heat and power plant (CHP) into electrical energy management is an advanced form of sector coupling of electricity and heat.

This allows using the CHP as an electrical generator that is independent of the time of day and weather conditions. When the state of charge of the electrical energy storage system is low, the CHP is given a switch-on signal to produce electricity. This is useful, for example, if the battery capacity is not sufficient to cover electricity consumption at night. This avoids the need to purchase expensive current from the grid.

When the battery is charging, this signal is stopped again to prevent the CHP’s current from being fed into the grid unnecessarily.

The enable signal for starting the CHP can be connected to pins 5/6 via the Harting plug (16-pin — C).
For detailed information on connecting the CHP, please refer to the manufacturer’s installation instructions.

After installing the components, the app still needs to be installed.
To do this, proceed as described in the section Activation of the app in the FEMS App Center.

8.5. Additional AC meter

If additional meters have been installed for monitoring other consumer loads or generators, these must be integrated into the circuit in accordance with the manufacturer’s instructions.
The communicative integration is shown below using a 3-phase sensor without a current transformer as an example.
Only meters approved by FENECON can be integrated.
The first production meter is always integrated with Modbus ID 6. All others in ascending order. The baud rate is 9600.

Connect the cores to pin 3/4 on the Harting plug (16-pin — A).
Connect the white core (alternative color possible) to terminal 3.
Connect the brown core (alternative color possible) to terminal 4.

For example SOCOMEC E24

The brown wire (alternative color possible) is connected to the meter at connection point 2 and the white core (alternative color possible) is then connected to 3.
A terminal resistor with 120 Ω must be installed between (+) and (-) (A/B) on the last bus device.

For example KDK 4PU

The brown wire (alternative color possible) is connected to the meter at connection point 8 and the white core (alternative color possible) is then connected to 7.
A terminal resistor with 120 Ω must be installed between (+) and (-) (A/B) on the last bus device.

If several meters are to be installed, they can be connected in series for communication purposes. For this purpose, the first meter can be bridged to the second, etc. The Modbus address must be set in ascending order.
Link to the overview page of the installation and configuration instructions for energy meters

Once the components have been installed, the app still needs to be installed.

To do this, proceed as described in the section Activation of the app in the FEMS App Center.

8.6. Activation of the app in the FEMS App Center

After installing the hardware FEMS App extension, it still needs to be activated in the App Center. To do this, proceed as follows:

https://portal.fenecon.de

Log in with your installer account.

First check whether updates are available for the FEMS.

9. Updating the FEMS

To be able to use all FEMS Apps extensively and in the latest version, carry out a system update to the latest version.

Open the burger menu at the top left of FENECON Online Monitoring.

Image 25. Burger to side menu — System update — Step 1

Select Settings.

FENECON Online Monitoring, Einstellungen

Image 26. Side menu — System update — Step 2

Select FEMS System.

Image 27. App Center — System update — Step 3

Click on INSTALL LATEST VERSION to update the system. If the latest version is already installed, you do not need to do anything else.

Image 28. App Center — System update — Step 4

To return to the settings menu after the FEMS system update:
Click on the arrow at the top left. This applies to all submenus in the Settings area.

Image 29. Back to the Settings menu

10. Starting point: FEMS App Center

After you have performed a system update, open the FEMS App Center.
1. Alternatively, go to the FEMS App Center via the top left burger menu in the FENECON Monitoring.

Image 30. App Center — Step 1

You are now in the App Center. From here you can redeem and register licence keys for apps, install new apps and edit or subsequently configure apps that are already installed.

Image 31. App Center — Step 2

10.1. Installation of further FEMS Apps

The following instructions show an example of how to install an FEMS App PV inverter.

There are two ways to install an FEMS App via the App Center.

10.1.1. Installation after redeeming a licence key

After a licence key has been redeemed, a selection of available apps that can be installed is displayed.

The App Center offers a search bar and a filter option to get to the desired app more quickly:

Image 32. Search for a specific app in the App Center

In the example, the FEMS App SMA PV Inverter was searched for. This app is selected by clicking or tapping on the tile.

Image 33. App installation — Variant 1 — Step 1

You will then be taken to the app overview:

Image 34. App installation — Variant 1 — Step 2

Select the INSTALL APP button.

You will then be taken to the installation wizard for the respective app:

FEMS, App SMA PV Inverter — Installationsassistent

Image 35. App installation — Variant 1 — Step 3

Some of the input fields are pre-filled. Nevertheless, enter your data if it differs from the default values (e. g. IP address). Otherwise, the default values can be retained (e. g. port, Modbus unit ID).

Mandatory fields are marked with (*)

Check your entries and make sure that they are correct. Otherwise the respective app will not work properly!

Select the INSTALL APP button again.

Once the installation process has been successfully completed, the new app will appear in the App Center overview in the Installed category.

FEMS, App SMA PV Inverter wurde erfolgreich installiert

Image 36. App installation — Variant 1 — Step 4

10.1.2. Direct installation

You can also install an app directly. To do this, go to the App Center overview and search for the desired app.

Only apps from the "Available" category can be installed.

Image 37. Search for a specific app in the App Center

In the example, the FEMS App SMA PV Inverter was searched for. This app is selected by clicking or tapping on the tile.

Image 38. App installation — Variant 2 — Step 1

You will then be taken to the individual view of the app:

Image 39. App installation — Variant 2 — Step 2

Select the INSTALL APP button.

An input mask for redeeming a licence key appears:

Image 40. App installation — Variant 2 — Step 3

You have two options here:

Redeem a new licence key directly: If you have not yet registered a licence key or wish to redeem a new licence key, enter the 16-digit key in the corresponding field and then click on VALIDATE LICENCE KEY.

The entered licence key is then checked for validity.

Image 41. Redeem new licence key directly

If the licence key is valid, it can be registered by clicking on the button of the same name.
⇒ REDEEM LICENCE KEY

If the licence key is invalid, please check your entry and try again.

Redeem an already registered licence key: In this case, the button in the App Center looks like this:

If you want to redeem an already registered licence key, check the corresponding box and select the appropriate, already registered licence key via drop-down menu.

Bereits registrierten Lizenzschlüssel einlösen

Image 42. Redeem already registered licence key

Then click on the REDEEM LICENCE KEY button.

You will then be taken to the installation wizard for the respective app.

Image 43. App installation — Variant 2 — Step 4

Some of the input fields are pre-filled. Nevertheless, enter your data if it differs from the default values (e. g. IP address). Otherwise, the default values can be retained (e. g. port, Modbus unit ID).

Mandatory fields are marked with (*)

Check your entries and make sure that they are correct. Otherwise the respective app will not work properly!

Select the INSTALL APP button again.

Once the installation process is complete, the new app will appear in the App Center overview in the Installed category.

Image 44. App installation — Variant 2 — Step 5

11. External control of the inverter

There are various ways to override the inverter from external devices.

Image 45. Connection — Curtailment via ripple control receiver

12. Troubleshooting

12.1. Errors in Online Monitoring

The system status can be checked after logging in at the top right using the color of the icon. A green tick indicates that everything is OK, an orange exclamation mark indicates a warning (Warning) and a red exclamation mark indicates an error (Fault).

12.1.1. Fault display

System status: Everything is OK

System status: Warning

System status: Error (Fault)

12.1.2. Troubleshooting

You can get a detailed overview of an existing warning or error by clicking on the exclamation mark in the top right-hand corner.

The scroll bar can be used to examine the origin of the warning or error in more detail.
In this example, the error lies with the controller used.

Clicking on the icon (down arrow) displays a more detailed error description depending on the error.

In the example above, an incorrect reference for the grid meter was intentionally entered for test purposes, which is why the controller execution fails.

Under certain circumstances, it may happen that the FEMS is not accessible and the error message opposite appears.

If the FEMS is offline, follow the steps displayed below the message.

12.2. Battery tower

12.2.1. Fault display

Faults are displayed on the BMS box via a red LED.

The various errors are indicated by LED codes.

System status

System information

LEDs

blue/red

1

2

3

4

Bootloader

Start

Master/Slave

Parallel Box

Extension Box

Check mode

Individual or parallel connection

SoC display

Charging

0 % to 25.0 % SoC

25.1 % to 50.0 % SoC

50.1 % to 75.0 % SoC

75.1 % to 99.9 % SoC

100 % SoC

Discharging and standby

100 % to 75.1 %

75.0 % to 50.1 %

50.0 % to 25.1 %

25.0 % to 0 %

Error

Overvoltage

Undervoltage

Overtemperature

Undertemperature

Overcurrent

SoH too low

Int. communication

Ext. communication

Parallel address error

Module address error

BMS box fuse

Module fuse

Contact error

Insulation error

BMS error

Blue permanently on

Blinking blue

Blue flashing quickly

Red permanently on

12.2.2. Troubleshooting

If faults cannot be rectified or in the event of faults that are not included in the fault list, contact FENECON Service. Cf. Service.

12.3. Fault list

Table 35. Troubleshooting
Component	Error/fault	Measure
Battery module	The battery module has become wet	Do not touch Contact FENECON Service immediately for technical support
Battery module	The battery module is damaged	A damaged battery module is dangerous and must be handled with the utmost care. Damaged battery modules must no longer be used. If you suspect that the battery module is damaged, stop operation and contact FENECON Service

12.4. Service

If the system malfunctions, contact the FENECON Service:

Phone: +49 (0) 9903 6280-0

E-mail: service@fenecon.de

Our service hours:
Mon.-Thurs. 08:00 to 12:00 | 13:00 to 17:00
Fri. 08:00 to 12:00 | 13:00 to 15:00

13. Technical maintenance

13.1. Tests and inspections

When carrying out inspection work, ensure that the product is in a safe condition. Improperly performed inspections can have serious consequences for people, the environment and the product itself.

Inspection work must only be carried out by trained and qualified specialists.

The maintenance instructions of the component manufacturer must be observed for all individual components.

Check the product and the cables regularly for visible external damage. In the event of defective components, contact FENECON Service. Repairs must only be carried out by a qualified electrician.

13.2. Cleaning

Cleaning agents: The use of cleaning agents can damage the electrical energy storage unit and its parts.
It is recommended that the electrical energy storage unit and all its parts are only cleaned with a cloth moistened with clean water.

The entire product must be cleaned regularly. Only appropriate cleaning agents must be used for this purpose.
The cleaning agents must be free of chlorine, bromine, iodine or their salts. Steel wool, spatulas and the like must not be used for cleaning under any circumstances. The use of unsuitable cleaning agents can lead to external corrosion.

13.3. Maintenance work

No regular maintenance work needs to be carried out on the system. Nevertheless, check the status of your electrical energy storage system regularly.

Regular re-referencing of the electrical energy storage system is recommended, i.e. it must be completely discharged (SoC = 0 %) and then fully charged again (SoC = 100 %), as otherwise capacity may be lost.

13.4. Repairs

In the event of defective components, contact FENECON Service.

13.5. Warranty cases

Warranty claims must be reported to FENECON in text form (e. g. by e-mail) within the warranty period. The notification must be made within a cut-off period of 8 weeks after the end customer has become aware of the warranty claim or could have become aware of it without gross negligence.

14. Advice for fire departments when dealing with FENECON Home & Commercial systems

The FENECON Home and Commercial systems operate in the low-voltage range, which means that they are operated with voltages of less than 1,500 volts direct current (DC) and less than 1,000 volts alternating current (AC).

It may be useful to install an additional switch that disconnects the building from the emergency power supply. This makes it easier for the fire department to act safely and quickly in an emergency.

Image 46. Installation — Maintenance switch using the example of Home 20/30

For a precise procedure for emergency services, it is recommended to ask the relevant fire academies and request the corresponding information sheets and pocket cards for battery energy storage systems.

15. Flood safety measures FENECON Home & Commercial

First steps after the water has receded

Even if your battery energy storage system looks undamaged on the outside:

Do not put the system back into operation yourself.
Ventilate the room well before entering (open windows from the outside if possible).
Avoid sparks (no smoking, no lighters).

Why a review is important:

Even though LFP batteries are very safe, water or moisture can:

Cause short circuits in the electronics.
Trigger corrosion of electrical connections.
Create isolation problems that only become apparent later.

These problems do not have to occur immediately, but can develop over weeks.

Commission a professional inspection

Please contact:

Your installer or a qualified electrician with experience in battery energy storage systems.
FENECON, the manufacturer of your system.
Your insurance company — document the damage with photos.

The qualified specialist will check:

Whether water has entered the system.
Whether electronic components have been damaged.
Whether a recommissioning is safely possible or a replacement is necessary.

No recommissioning without approval

Battery energy storage systems that have come into contact with water must only be put back into operation after a professional inspection and express approval by a qualified specialist. This is for your safety and is often also a prerequisite for your insurance cover.

When replacement is necessary

If your electrical energy storage system needs to be replaced:

The disposal of the defective system must be carried out professionally by specialized companies.
Your installer will usually organize the removal and disposal.
Do not attempt to transport damaged batteries yourself

Storage disposal until collection

If damaged battery modules cannot be collected immediately:

Store them well ventilated outdoors with sufficient clearance from flammable materials.
Storage in a
- Sand bed.
- Fireproof container, not gas-tight, ventilated.
- Water bath, e. g. metal tub, completely covered with water.
Keep children and pets away.

Status: October 2025
Source: According to Specifications of the German Energy Storage Systems Association (BVES) e.V..

16. Handover to the operator

16.1. Information for the operator

The following information must be provided to the operator:

Table 36. Information for the operator
Component	Information/Document	Comment
System	FEMS number
System	Login data for Online Monitoring
System	Operating instructions

17. Transport

This section contains information on external and internal transportation of the product.

Transportation is the movement of the product by manual or technical means.

Only use suitable and tested lifting gear and hoists for transportation!

Risk due to lifted loads!
Standing under suspended loads is prohibited!

Check that the parts and outer packaging are in perfect condition.

Check that

all screw and bolt connections are tightened firmly,
the transport rail has been properly attached,
you wear personal protective equipment (PPE).

Ensure that nobody is on or near the product during transportation. Do not use people as counterweights.
Ensure that nobody is below suspended loads.

Notes:

The batteries are removed or replaced by specialist personnel and transported by a hazardous goods carrier.
When transporting the batteries, observe the current laws, regulations and standards, e. g. the Hazardous Goods Transportation Act (GGBefG).

Legal regulations
The product is transported in accordance with the legal regulations of the country in which the product is transported off-site.

18. Dismantling and disposal

18.1. Prerequisites

The power supply to the electrical energy storage unit is interrupted and secured against being switched on again.

Sharp and pointed edges
Injuries to the body or limbs caused by sharp and pointed edges.

Always wear suitable protective equipment (cut-resistant protective gloves, protective footwear, protective eyewear) when working on the product!

18.2. Dismantling

The electrical energy storage system may only be dismantled by authorized qualified electricians.
Dismantling work must only be carried out when the system has been taken out of operation.
Before starting disassembly, secure all components to be removed against falling, tipping over or moving.
Dismantling work must only be carried out when the system is shut down and only by service personnel.
The dismantling instructions of the component manufacturer (→ Appendix, Applicable documents) must be observed.
When transporting the battery modules, the current laws, regulations and standards must be observed (e. g. Dangerous Goods Transportation Act — GGBefG).

18.3. Disposal

The FENECON electrical energy storage system must not be disposed of with normal household waste.
The FENECON electrical energy storage system is RoHS and REACH compliant.
Disposal of the product must comply with local regulations for disposal.
Avoid exposing the battery modules to high temperatures or direct sunlight.
Avoid exposing the battery modules to high humidity or corrosive atmospheres.
Dispose of the electrical energy storage system and the batteries it contains in an environmentally friendly manner.
Contact FENECON GmbH to dispose of the used batteries.

For the disposal of all components, the usual procedures at the site and the applicable environmental protection regulations must be applied!
For the disposal of auxiliary and operating materials, observe the local regulations and information from the safety data sheets.
For disposal, please also observe the information in the individual operating instructions for the respective components.
If in doubt about the disposal method, contact the manufacturer or the local waste disposal company.