FENECON Commercial 92 — Assembly and Operating Instructions

1. About 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	Änderung	Datum	Name
2024.08.01	Entwurf Ersterstellung	08.08.2024	FENECON FT
2024.10.01	Veröffentlichung auf docs.fenecon.de	01.10.2024	FENECON PM
2025.1.1	Integration Feuerwehrhinweis	27.01.2025	FENECON PM
2025.8.1	Integration Splitsockel	01.08.2025	FENECON TK/MR

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.

Quelle der Gefahr
Mögliche Folgen bei Nichtbeachtung

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	Number	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 for the storage of electrical energy in rechargeable lithium iron phosphate battery modules (charging) and the provision of 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. Qualified electricians

Skilled electrical personnel 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 include 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 electrical energy storage 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 qualified 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 danger zone.
Inform the persons 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
	Pictogram on enclosure warning of dangerous voltage	Pictogram on enclosure and marking of components which do not clearly indicate that they contain electrical equipment which may be a risk of electric shock.
	General warning sign.
	Battery charging hazard warning	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 due to battery charging.
	No open flames; fire, open sources of ignition and smoking prohibited	Pictogram on the enclosure and marking of components which do not clearly indicate that they contain electrical equipment which may give rise to a risk from open flames, fire, open sources of ignition and smoking.
	Protective earth marking.
	Separate collection of electrical and electronic equipment.
	Observe instructions.
	Use protective headgear
	Use protective footwear
	Use protective gloves
	CE label
	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 may 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 may 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 may be used for maintenance on uninsulated conductors and terminals.
Switch 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.
Observe the inspection and maintenance intervals for electrical components specified by the manufacturer.
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 can still carry dangerous residual voltages for a certain time after disconnection. Before starting work on these systems, check that they are voltage-free.

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 may 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 energy storage systems and their applications communicate and operate without 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 information
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 — FENECON Commercial 92 — EMS box

Table 9. Technical data — FENECON Commercial 92 — 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

The dimensions are given in mm.

Image 2. Dimensions — EMS box

3.3.2. EMS box — Pin assignment

Image 3. Pin assignment — EMS box

Table 10. Pin assignment — EMS box
Item	Description
1	Battery connection to the inverter (MC4-Evo stor)
2	Communication output for parallel connection of several batteries
3	Customer network connection (LAN) RJ45 (network cable not included in scope of delivery)
4	Communication Inverter, relay outputs; digital inputs (16-pin connector)
5	Power supply FEMS box; potential-free contacts (max. 10 A, measured) (10-pin plug)
6	Earth connection
7	For future applications (not assigned)

3.4. Technical data — FENECON Commercial 92 — Parallel switch box

Table 11. Technical data — Parallel switch box
Naming	Value/dimension
Max. 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	606 \| 157 \| 639 mm
Weight	26 kg

3.4.1. Dimensions

The dimensions are given in mm.

Image 4. Dimensions — Parallel switch box

3.4.2. Parallel switch box — Terminal assignment

Image 5. Terminal assignment — Parallel switch box

Table 12. Terminal assignment — Parallel switch box
Pos.	Beschreibung
1	Batterie-Anschluss zum Wechselrichter
2	Batterie-Anschluss für bis zu 5 Batterietürme
3	Erdungsanschluss

3.5. Technical data — FENECON Commercial 92 — Extension box

Table 13. Extension box — Technical data
Naming	Value/dimension
Operating voltage DC	224 V to 672 V
Max. Current (battery)	50 A
Operating temperature	-10 °C ~ 50 °C
Protection specification	IP55 (plugged in)
Width \| Depth \| Height	506 \| 401 \| 157 mm
Weight	9 kg
Installation	stackable

3.5.1. Dimensions

The dimensions are given in mm.

Image 6. Dimensions — Extension box

3.5.2. Extension box — Pin assignment

Image 7. Pin assignment — Extension box

Table 14. Pin assignment — Extension box
Item	Description
1	Battery connection to EMS box in parallel (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

3.6. Technical data — FENECON Commercial 92 — BMS box

Table 15. 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

3.6.1. Dimensions

The dimensions are given in mm.

Image 8. Dimensions — BMS box

3.7. Technical data — Base

Table 16. 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

3.7.1. Dimensions — Base

The dimensions are given in mm.

Image 9. Dimensions — Base

4. General description

FENECON Commercial 92 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

2024 09 Commercial Anlage schematische Darstellung optionale Komponeneten

Image 10. System — Schematic diagram with optional components (shown without protective device)

4.1.1. System structure as an AC system

2024 09 Commercial Anlage Systemaufbau AC System

Image 11. System structure as AC system (shown without protective device)

Table 17. System structure as an AC 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	FENECON Commercial 92 battery towers
8	Inverter

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, ensure that 15 battery modules are installed in each battery tower.

Table 18. System configuration — Required components
Number of battery towers	Number of battery modules max.	BMS box (per tower)	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 12. 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 — EMS box

Table 19. Scope of delivery — FENECON Commercial 92 — EMS box
Anzahl	Bezeichnung	Art.-Nr.
1	FENECON Commercial 92 — EMS-Box	FEC010
2	Seitenblende	Teil von Komplettset FEH050
2	Harting-Gehäuse mit Kabelverschraubung (13-21 mm), Mehrfachdichtung (4 x 8 mm) Harting-Gehäuse mit Kabelverschraubung (19-25 mm), Mehrfachdichtung (2 x 10 & 1 x 8 mm)	Teil von Komplettset FEH050
1	Harting-Buchse, 10-polig	Teil von Komplettset FEH050
1	Harting-Einsatz, 16-polig (zusammengebaut)	Teil von Komplettset FEH050
1	Endbrücke	Teil von Komplettset FEH050
2	Netzwerkgehäuse	Teil von Komplettset FEH050
5	Blindstopfen, 8 mm	Teil von Komplettset FEH050
2	Blindstopfen, 10 mm	Teil von Komplettset FEH050
1	Batteriekabel-Satz, 10 m	FEC037
1	Betriebsanleitung (für Installateure)
1	Bedienungsanleitung (für den Endkunden)
1	Schnellstartanleitung (für Installateure)

5.1.3. FENECON Commercial 92 — Parallel switch box

Table 20. Scope of delivery — Parallel switch box
Anzahl	Bezeichnung	Art.-Nr.
1	FENECON Commercial 92 — Parallelschaltbox	In Kombination mit Wechselrichter FEC060
1	Wandhalterung	FEC031
4	Dübel mit Schraube und Unterlegscheibe	Teil von Komplettset FEC033
1	zwei DC-Kabel, 3 m	FEC034
1	Kommunikationskabel — Wechselrichter-FEMS-Box; 10 m	FEC032
1	Erdungskit	Teil von Komplettset FEC033

5.1.4. FENECON Commercial 92 — Extension box

Table 21. Scope of delivery — Extension box
Anzahl	Bezeichnung	Art.-Nr.
1	FENECON Commercial 92-Extension-Box	FEC012
2	Seitenblende	FEH059
2	je Satz zwei DC-Kabel, 10 m	FEC037
1	Kommunikationskabel, 2 m	FEH059

5.1.5. FENECON Commercial 92 — BMS box/base

Table 22. Scope of delivery — BMS module/base
Anzahl	Bezeichnung	Art.-Nr.
1	FENECON Commercial 92 — BMS-Box	FEH000
1	Sockel
2	Seitenblende (FENECON Commercial 92 — BMS-Box)	FEH051
2	Seitenblende (Sockel)
4	Wandbefestigung — Befestigungswinkel	Teil von Komplettset FEH052
4	Wandbefestigung — Befestigungswinkel (Wand-Teil)	Teil von Komplettset FEH052
4	Schraube M4 x 10	Teil von Komplettset FEH052
4	Schraube für Wandbefestigung M6 x 12	Teil von Komplettset FEH052

5.1.6. FENECON Commercial 92 — Battery module

Table 23. Scope of delivery — Battery module
Anzahl	Bezeichnung	Art.-Nr.
1	Batteriemodul
2	Seitenblende	FEH051
2	Befestigungsplatten	Teil von Verbindungsset FEH053
4	Schraube M4 x 10	Teil von Komplettset FEH053

5.2. Tools required

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

Table 24. Tools required
Illustration	Description	Illustration	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
	Protective footwear		Dust mask
	Rubber mallet		Vacuum cleaner
	Wire stripper		Protective gloves
	Torque wrench		Insulation stripping knife

6. Assembly

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 supplier documentation of the inverter.

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

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

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.

6.1. Montage — Wechselrichter

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

6.2. Montage — Batterieturm 1 mit FEMS-Box

6.2.1. Safety instructions

Electric shock from live parts
Death or serious injury to the body and limbs due to electric shock when touching live DC cables connected to the 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 an error, an ignitable gas mixture may occur inside the battery module. Switching operations in this state can cause fire inside the product or trigger 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 miniature 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 if battery modules are deeply discharged
Death or serious injury to the body and limbs due to electric shock when touching a live meter housing: 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.

Arcing 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 in the battery modules.

Before carrying out any work on the battery modules, disconnect the battery modules from the power supply.
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 when falling during transportation or assembly 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 the battery towers and all parts of the inverter with a cloth moistened with clean water.

Place of installation

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 assembling the battery modules.
Remove all conductive jewelry (e.g. watches, bracelets, rings).

6.2.2. Conditions at the installation site

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 unauthorized installation locations:

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 ingress into the system.

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

6.2.3. Installation conditions and distances at the installation site

Image 13. Installation conditions.

Battery towers must be installed protected from direct sunlight, 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 14. Spacing at the installation site

Empfohlen wird ein seitlicher Abstand von 300 mm von einer Wand und 300 mm zwischen zwei Batterietürmen.
Auf der Vorderseite werden 300 mm Abstand von einer Wand empfohlen.
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.

6.2.4. Assembly of battery towers with FENECON Commercial 92 EMS box and FENECON Commercial 92 Extension box

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.

Den Sockel auf den Füßen am Installationsort aufstellen (den Abstand von 40 bis 65 mm zu einer Wand einhalten).

Ein Batteriemodul auf den Sockel aufsetzen und dabei auf die Steckbolzen und Positionslöcher achten.
An den Steckverbindungen der Batterie kann eine schwarze Schutzfolie aufgeklebt sein. Falls vorhanden, diesen vor dem Zusammenstecken entfernen.

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.

Attach FENECON Commercial 92 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 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 EMS box.

Image 15. Arrangement of the module fastening

6.3. 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:

Der Batterieturm wird stapelbar vor einer Wand auf festem und ebenem Boden installiert.
Der Abstand zur Wand muss 40 bis 65 mm betragen, damit die Wandhalterung korrekt angebracht werden kann.

Den Sockel auf den Füßen am Installationsort aufstellen (den Abstand von 40 bis 65 mm zu einer Wand einhalten).

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.

Alle restlichen Batteriemodule auf gleiche Weise montieren.

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.

Die FENECON-BMS-Box auf die letzte Batterie aufsetzen.
Es spielt keine Rolle, auf welchen der beiden Türme auf dem Splitsockel die FENECON-BMS-Box aufgesetzt wird.

Stecken Sie die FENECON-EMS-Box auf die BMS-Box auf.

Auf den zweiten Turm die Abschlussbox aufsetzen.

Setzen Sie bei allen weiteren Splitsockeln die FENECON-Extension-Box als Abschluss auf.

Montieren Sie das T-Stück und den Winkel mit der beiliegenden M6-Schraube.

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.
Für die Befestigung der Batterietürme wird die hier gezeigte Anordnung der Befestigungswinkel empfohlen. TIP: Siehe Grafik Anordnung der Modulbefestigung — Splitsockel für Montage-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 16. Module mounting arrangement — Split base

6.4. Electrical installation

6.4.1. Earthing the inverter and battery towers

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 EMS box and Extension box for this (red).

Ground the parallel switch box directly to the earth circuit connector.
Use at least a 25 mm² grounding cable.
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.

6.4.2. Connection and wiring of the KACO Inverter

2024 09 Commercial Anlage AC Anschluss allgemein

Image 17. General information AC connection

Table 25. Components for AC connection (not included in the scope of delivery)
Item	Description
1	Bi-directional meter from energy supplier
2	Inverter fuse 3-pole. (see Inverter manual)*¹
3	Fuse the load with RCD type A and suitable MCBs
4	KACO inverter 92 kW
5	Battery towers
6	Fuse protection max. C6 or C10 1-pole
7	Consumer load
8	Power supply/grid connection
9	Earth circuit connector

*¹ In addition, the currently valid national regulations and the specifications of the relevant grid operator must be observed. (If an RCD is required by the grid operator, an RCD type A with a tripping current of 300 mA is recommended; at 30 mA, unwanted shutdowns may occur.)

*²The 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.

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

(KDK 2PU CT)

Image 18. AC connection Energy meter

Table 26. 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

*¹ In addition, the currently valid national regulations and the specifications of the relevant grid operator must be observed. (If an RCD is required by the grid operator, an RCD type A with a tripping current of 300 mA is recommended; at 30 mA, unwanted shutdowns may occur.)

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 19. RS-485 connection

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.

Connect the other end with two open pins to terminal 1/2 on the Harting plug (16-pin — A).
Connect the white core to terminal 1.
Connect the orange core to terminal 2.

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 8 mm filler plugs and tighten the bolt connection.
Lock the plug at the top and bottom through the holders.

6.4.4. 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 1-5).
Connect Positive (+) to Positive (+) and Negative (-) to Negative (-).

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.

6.4.5. Communication between inverter and EMS box

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

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

Connect the network cable to the INTERNAL port of the EMS box.

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

6.4.6. 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).

6.4.7. 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 point can be skipped. The network cable can be plugged in directly in this case.

Make sure that the network connector protrudes approx. 3 mm beyond the bayonet catch at the front.
Beispielhaft kann die Endbrücke der Batterie als Referenz für die Position des Netzwerksteckers dienen.

For the Internet connection and for the storage 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 electrical energy storage system does not have a WiFi function.

6.4.8. AC connection of the FENECON 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.

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, the socket can be bolted into the housing.
Die restlichen Durchführungen der Mehrfachdichtung mit den beiliegenden Blindstopfen (10 mm) verschließen und die Verschraubung zudrehen.

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

7. Initial commissioning

7.1. Checking the installation, connections and cabling

Check the system as follows before initial commissioning:

All components (distances, environment, mounting) are installed correctly.
All internal wiring is complete and properly connected.
All external supply lines (power supply, communication cable) are properly connected.
All connected loads are matched to the system and the necessary settings have been made.
All necessary tests of the system were carried out in accordance with the standards.

Commissioning must only be carried out by trained specialist personnel.

It is forbidden to disconnect the plug connections when they are live. Disconnect the power supply.
Batteries must not be connected or disconnected when a current is flowing.
Opening batteries is prohibited.
Before commissioning the system, ensure that the battery modules are not deeply discharged.
If the battery modules are deeply discharged, contact FENECON Service
Only charge deeply discharged battery modules as instructed by the FENECON Service.

This is indicated in the installation and service instructions:

that an appropriate cooling time must be observed before starting work on the appliances,
or that the risk of burns is prevented by wearing suitable protective gloves.

7.1.1. Switch on

Rack in the EMS box (sub-distribution board or socket).
Rack in the inverter.
Racking in the battery towers (front battery tower).

If commissioning has already been completed, the battery will start and the LED bar should flash after approx. 60 seconds.
The system is now ready for use.

If commissioning has not yet been completed, the battery will not start.

The system is restarted by pressing the push-button on the front of the EMS box. The restart can take up to three minutes.

If the system has not yet been configured, the battery goes into error mode or switches off.
This can also happen during configuration. It is therefore recommended that you only switch on the battery when you are prompted to do so during the configuration process.

The inverter only starts after configuration and only then synchronizes to the grid.

7.1.2. Switching off the system

Rack out the battery towers (front battery tower).
Rack out the inverter (sub-distribution board, grid).
Rack out the EMS box (sub-distribution board or socket).
The system is only completely switched off when all LEDs on the inverter and the battery have gone out. This may take approx. 30 seconds.

7.2. Configuration via commissioning wizard

Open the FENECON homepage and click on the login for FEMS Online Monitoring "FEMS login" in the top right-hand corner. Alternatively, you can use the following QR code or link to access the page.

https://portal.fenecon.de/m

Log in with your installer account

If an installer account has not yet been created, it can be created directly under the login window.
All information must be filled in correctly and completely.

Once all the necessary points have been confirmed, the account will be created automatically.
You will be forwarded directly to the storage system configuration.

Click on the blue plus at the bottom.
add FEMS.

First, you must enter the 16-digit installer key.
This can be found on the right-hand side of the battery tower on the type label.
Installation key: XXXX-XXXX-XXXX-XXXX.
Then follow the installation wizard through the various steps.

Once commissioning is complete, the system is ready for operation and you will be forwarded directly to live monitoring.

You will receive an e-mail with a summary of the complete commissioning (commissioning protocol) for your records.
The customer also receives an e-mail with the personal access data for end customer monitoring.

8. FEMS Online Monitoring

The FEMS Online Monitoring is used to visualize all energy flows in your system. The energy monitor shows live data on grid withdrawal or feed-in, PV production, charging/discharging of the battery storage system and electricity consumption. Other widgets display the percentage of self-sufficiency and self-consumption. In addition, the individual widgets offer a detailed view, which can also be used to view the performance values with phase accuracy.

In addition to the pure information display, all additionally purchased FEMS extensions, such as for integrating a heat pump, Heating element, Combined Heat and Power plant (CHP), are also listed in Online Monitoring. Their functionality can be controlled via the corresponding widget.

In addition to the live view, the history offers the option of selecting self-selected time periods for Online Monitoring. The status of the entire system and the individual components can be monitored at any time using the info symbol.

8.1. Access data

Access to FEMS Online Monitoring is separated according to end customer and installer.

8.1.1. Access for the end customer

Access for the end customer is generated automatically after commissioning is complete and sent to the end customer by email.
The terms and conditions still need to be confirmed here, then the monitoring is available without restrictions.

8.1.2. Access for the installer

The installer account can be created on the FENECON homepage as described in the Configuration via commissioning wizard section. Access is required for successful commissioning.

9. 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 maximum expansion of the FENECON Commercial 92 system comprises of up to 5 battery towers, each with 15 battery modules and 210 kWh.

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 [Switch 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 Switch on 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.

10. 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 inputs
- 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://fenecon.de/fenecon-fems/

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 27. 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 28. Connector Pin assignment of control connector
Item	Description
1	RS485 connection — Mains meter
2	RS485 connection — External devices
3	Analog output (0-10 V)
4	12 V DC (12V; GND)
5	3 x digital inputs
6	Not assigned
7	Relay 5 (24 V; 1 A)
8	Relay 6 (24 V; 1 A)
9	CPC connection

10.1. 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 storage unit at times when cheap (solar) electricity is available in order to save electrical energy at times when there is no cheap surplus electricity.

1. The internal relay contacts 5 and 6 can be connected via pins 5/6 and 7/8 on the Harting plug (16-pin — C).
2. 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.

10.2. 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 referred to as a "Power-to-Heat" application.

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

To control each phase of the heating element separately, connect each phase individually to a relay.
Do this by connecting 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.
Cables (5G1.5) from the sub-distribution board to the Harting plug and from the Harting plug to the heating element (5G1.5) are recommended.
For detailed information on connecting the heating element, please refer to the respective manufacturer’s installation instructions.

Care must be taken to 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.

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

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 storage unit 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 electricity for water heating (e.g. for hot water buffer tanks, pool heating, etc.). In this way, other energy sources (e.g. wood or oil) can be saved. The externally installed relays must suit the set output of the heating element installed.

So that each phase of the heating element can be controlled separately, connect each phase individually to the internal relay via an additional external relay.
Fused via an MCB B6, connect L1 to pin 3. Route phase L1 from pin 4 to the external relay and connect to A1. Connect A2 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.
Oder alternativ die Schütze/Relais mit 24 V ansteuern. Wenn eine andere Spannungsquelle verwendet wird, dann darf A2 nicht mit N verbunden werden.

The voltage 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 respective 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.

10.4. Control of a CHP unit

The integration of a Combined Heat and Power unit (CHP) into electrical energy management is an advanced form of sector coupling of electricity and heat.

This allows to utilize the property of the CHP unit 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 signal to switch on 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 electricity from the grid.

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

1. The enable signal for starting the CHP can be connected to pins 5/6 via the Harting plug (16-pin — C).
2. For detailed information on connecting a CHP unit, 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.

10.5. Additional AC meter

If other meters have been installed for monitoring other consumers 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 generation meter is always integrated with Modbus ID 6. All others in ascending order. The baud rate must be 9600.

Connect the cores to pin 3/4 of 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.

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.
Am letzten Busteilnehmer muss zwischen + und - (A/B) ein Endwiderstand mit 120 Ω verbaut werden.

Am Beispiel 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 120 Ohm terminal resistor must be installed between + and - (A/B) on the last bus device.

Wenn mehrere Zähler verbaut werden sollen, dann können diese kommunikativ in Reihe geschaltet werden. Hierfür kann vom ersten Zähler auf den Zweiten usw. weitergebrückt werden. Die Modbus-Adresse muss aufsteigend eingestellt werden.
https://docs.fenecon.de/de/topics/meters_overview.html

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.

10.6. Activation of the app in the FEMS App Center

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

https://portal.fenecon.de/m

Melden Sie sich mit Ihrem Installateurs-Zugang an.

Oben links auf die drei Striche klicken.

"Einstellungen" auswählen

"FEMS App Center" klicken.

Durch Klick auf "Lizenzschlüssel einlösen" öffnet sich ein neues Fenster.

Den Lizenzschlüssel eingeben und "Lizenzschlüssel validieren" klicken. (Der Lizenzschlüssel muss vorab gekauft werden)

War die Validierung erfolgreich, wird eine Liste der jeweiligen Apps in einer Auswahl angezeigt, die mit dem eingelösten Lizenzschlüssel installiert werden können.
Auswählen der zu installierenden App.

Anschließend wird man zum Installationsassistenten der jeweiligen App weitergeleitet.
Einstellungen vornehmen.
Abschließend auf "App installieren" klicken.

11. External control of the inverter

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

11.1. § 14a of the Energy Industry Act (EnWG)

The Inverter can be limited to a maximum reference power of 4.2 kW. The digital input of the EMS must be assigned for this.

The signal can be connected to pins 1 (C) and 8 (A) via the Harting plug (16-pin — A & C).
For detailed information on connecting the FNN control box, please refer to the manufacturer’s installation instructions.

11.2. Connect external mains protection component

For the installation of an external grid protection component, please refer to the inverter manual (there: Section 7.8.5, page 29).

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 symbol. 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 state: Warning

System state: Error

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 network counter was intentionally entered for test purposes, which is why the controller fails to run.

Under certain circumstances it can happen that the FEMS is not accessible and the adjacent error message 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.

Memory status

Memory info

LEDs

blue/red

1

2

3

4

Bootloader

Start

Master/Slave

Parallel switch box

Extension-Box

Check mode

Individual or parallel connection

SoC display

Charging

0 % bis 25.0 % SoC

25.1 % bis 50.0 % SoC

50.1 % bis 75.0 % SoC

75.1 % bis 99.9 % SoC

100 % SoC

Discharging and standby

100%-75.1%

75.0%-50.1%

50.0%-25.1%

25.0%-0%

Error

Overvoltage

Undervoltage

Overtemperature

Undertemperature

Overcurrent

SoH too low

Int. comm.

Ext. comm.

Parallel address error

Module address error

BMS box fuse

Module fuse

Contact error

Insulation error

BMS error

Blue, permanently on

Blue, blinking

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, the FENECON Service must be contacted. See section Service.

12.3. Fault list

Table 29. Troubleshooting
Component	Disturbance	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

The FENECON service must be contacted in the event of system faults:

Phone: +49 (0) 9903 6280-0

E-mail: service@fenecon.de

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

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. If components are defective, contact the 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 suitable cleaning agents may 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 never be used for cleaning. 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, but check the status of your electrical energy storage system regularly.

The capacity guarantee applies if the capacity of a battery module falls below 70 % of the amount of energy shown as usable capacity before reaching 6,000 full cycles on the battery output side (DC) if a 2.2 kWh battery module has a capacity of less than 1.54 kWh. For the FENECON Home 6, 10 & 15 and FENECON Home 20 & 30 models, the amount of energy falls below 70 % of the usable capacity if a 2.8 kWh battery module has a capacity of less than 1.96 kWh.

13.4. Repairs

The FENECON Service must be contacted in the event of defective components.

14. Information for fire departments when handling FENECON Home and Commercial battery energy storage 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 20. 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 department schools and request the corresponding information sheets and pocket cards for battery storage systems.

15. Handover to the operator

15.1. Information for the operator

The following information must be provided to the operator:

Table 30. Information for the operator
Component	Information/Document	Comment
Attachment	FEMS number
Appendix	Login data for Online Monitoring
Attachment	Operating instructions

16. Transportation

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.

See for yourself that

all parts are firmly screwed together,
the transport lock has been properly fastened,
you wear personal protective equipment.

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

Notes:

The batteries are removed or replaced by specialist personnel and transported by a hazardous goods carrier.
Observe the current laws, regulations and standards when transporting the batteries, e. g: Dangerous 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.

17. Dismantling and disposal

17.1. Prerequisites

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

Sharp and pointed edges
Risk of injury to the body or limbs due to sharp and pointed edges.

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

17.2. Dismantling

The electrical Energy storage system must only be dismantled by authorized electricians.
Dismantling work must only be carried out when the system has been taken out of operation.
Before starting disassembly, all components to be removed must be secured 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 manufacturers (see appendix, Other applicable documents) must be observed.
The current laws, regulations and standards must be observed when transporting the battery modules (e.g. Dangerous Goods Transportation Act - GGBefG).

17.3. Disposal

The FENECON system must not be disposed of with normal household waste.
The FENECON Home 20 & 30 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 local environmental protection regulations must be adhered to!
Observe the local regulations and information in the safety data sheets when disposing of auxiliary and operating materials.
For disposal, 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.