Customer Interfaces Industrial M (452-904 kWh) IMK120/IMK220/IMK320

Version history

Name Revision Date Comment

Christina Zehntner

REV00

25/05/2026

Created

Markus Aufschläger

REV00

26/05/2026

Approved

© FENECON GmbH, 2026 — All rights reserved.
Reproduction, even in part, is only permitted with the written consent of FENECON GmbH.

1. Customer interfaces

The FENECON Industrial M must have connections to the customer’s system via the interfaces listed below. Cables are fed in from the bottom or front via cable glands (Wiska ESKV EN62444).

1.1. Electrical power connection

Depending on the configuration, 2–4 KACO gridsave 92 TL3 inverters are installed. These are connected on the AC side via the integrated NSHV and are connected to the customer’s system via the compact circuit breaker (Siemens 3VA2780-2AC06-4BB1). The circuit breaker features front-mounted, widened main connections with M12 mounting holes.

imk main connection compact power switch red
Figure 1. Main Connections — Compact Circuit Breakers

Cable sizing is determined based on the project-specific installation conditions in accordance with the relevant standards. For the connection, VDE-AR-N 4110 and VDE-AR-N 4105 must be observed. Cable feed-throughs are located at the bottom or front using M50 cable glands (connection area 21–35 mm).

1.2. Utility connection

The Industrial M control cabinet is powered at terminal -X2 via the power connection on the circuit breaker. An alternative power supply can be provided by the customer. To do this, the jumper between -X1 and -X2 must be removed, and the customer’s power supply must be connected to -X1. Upon initial delivery, an external CEE plug is attached to -X1, which can be used to power the air conditioning during storage. This plug is removed during commissioning and replaced with the jumper from -X1 to -X2. Cables are routed through M50 cable glands at the bottom or front of the enclosure. A cable cross-section of 10–16 mm2 is recommended.

1.3. Grounding and Lightning Protection

All components must be connected to an appropriate equipotential bonding system via the corresponding grounding tabs. The entire system must be integrated into the local lightning protection system.

1.4. Internet connection

The system can be connected to the internet via fiber-optic cable or RJ45. To do this, a suitable cable with an SFP+ adapter must be connected to the installed router. The choice between fiber-optic cable and RJ45 depends on the length of the cable used to connect to the customer.

1.5. Control

The system can be connected to the higher-level control system (e. g. EMS, SCADA, parking controller, etc.) via a Modbus-TCP connection (RJ45) to receive power commands.

1.6. Fire detection system connections (optional)

Optionally, the fire alarm system’s contacts can be used, for example, to connect to a fire alarm control panel. Three dry-contact outputs are available (pre-alarm, main alarm, and fault).

1.7. Shutdown by the customer

A customer-initiated shutdown can be integrated into the maintenance switch loop. This causes the DC contactors, the section switch (inverter), and the NSHV to be shut down via hardware.