6 Wiring of the Device
Rev. 03/2019 39
Pin designation Connection no. on connector strip 35-pole connector
RS485 TX + RS485 1
TX – 2 Z
Com 3 a
RX + 4 b
RX – 5 c
Shield 6 –
6.1.2 Input Wiring – Power Supply
Operational safety
The correct operation of the device is only guaranteed if the device is
operated within the permissible supply voltage range. Therefore, use a
power supply according to the specifications in the operating instructions.
Design of power supply
For the power supply, an overcurrent protection mechanism must be set up
with a circuit breaker (MIC5: 20 A DC, MIC5-SE: 16 A DC can both be set with
tripping characteristic B), which allows switching off. When selecting the
circuit breaker, the conditions of the installation site and the ambient
temperature must be considered. The circuit breaker must be easy for the
user to access and marked as a disconnecting device for the ignition
controller.
If the power is supplied via a power supply unit, the following specifications
must be observed additionally:
MIC5:
– Voltage: 24 V DC; Current: at least 30 A
– Wiring: at least 2.5 mm² cross-section
MIC5-SE:
– Voltage: 24 V DC; Current: at least 25 A
– Wiring: at least 1.5 mm² cross-section
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