Installing/Mounting
4.1 Fitting the CU to the PM
Control Units CU240S
4-2 Operating Instructions, 11/2006, A5E00766042B AA
4.1 Fitting the CU to the PM
Fitting the Control Unit to the Power Module
The Control Unit is snapped on to the Power Module as shown in the figure below. To
disconnect the CU push the release button on top of the PM.
The process of fitting the Control Unit to the Power Module is the same technique
independent from the type of G120 control unit or G120 power module.
Figure 4-2 Fitting the control unit to the power module
24 V power supply
Normally the CU is supplied with 24 V from Power Module. But it is also possible to use an
external DC 24 V supply (20.4 V … 28.8 V, 0.5 A). It must be connected to the Control Unit
terminals 31 (+ 24 V In) and 32 (0 V In). Some reasons for using an external 24 V power
supply are:
● The PROFIBUS DP interface is required to communicate with the Control Unit when the
Power Module mains power is not present
● Supply for 24 V encoder
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