Installation
4.2 Electrical Installation
Converter with the control units CU240D-2
Operating Instructions, 04/2018, FW V4.9 SP10, A5E34262100B AF
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4.2.11
Connections and cables
Connectors
"Switched" and "unswitched" 24 V power supply
The unswitched 24 V power supply (1L+) is required for the device to function.
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Use a power supply with PELV (Protective Extra Low Voltage).
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For applications in USA and Canada: Use a power supply NEC Class 2.
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The 0 V of the power supply must be connected with low resistance to the PE of the
system.
The switched 24 V (2L+) supplies the two digital outputs. Switching off brings all of the
actuators connected to the digital outputs into the no-voltage state.
If you don't need the switching of 2L+ power supply, then both the switched as well as the
non-switched 24 V may come from the same supply.