Installation
4.2 Electrical Installation
Converter with control units CU250D-2
40 Operating Instructions, 04/2015, FW V4.7.3, A5E34261542B AB
24-V power supply with multiple inverters
Installation using 24 V bus
The following options are available for the 24 V supply of the inverter:
1. A T distributor with integrated power supply unit supplies the 24 V.
Advantage: Low installation costs.
2. An external power supply unit supplies the 24 V.
Advantage: You can switch off the 400 V without interrupting the 24 V supply and thus
the fieldbus communication of the inverter.
The inverter can conduct a maximum current of 8 A through its 24 V connector.
Figure 4-8 24 V bus from T distributor or with separate power supply
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