Terminal Strips Behind The Upper Front Door - Siemens sinamics G120 Operating Instructions Manual
Low voltage inverters chassis devices with cu250s-2 control units and encoder evaluation
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- List manual (1256 pages) ,
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4.6.3
Terminal strips behind the upper front door
All terminals with reference potential "GND" are connected with one another in the inverter.
Terminals 31, 32
Connection of the optional 24 V supply has the following advantages:
The Control Unit remains in operation after disconnection of the Power Module from the line supply.
•
The Control Unit thus maintains the fieldbus communication, for example.
You can use terminals 51 ... 54 as digital outputs.
•
Power supplies in conformance with SELV (Safety Extra Low Voltage) or PELV (Protective Extra Low
Voltage) are permissible.
If you use a common external power supply for terminals 31, 32 and the digital inputs, you must connect
GND and the reference potential of the digital input ("DI COM1/2/3") with each other.
Terminals 3, 4
You may use the internal 10 V supply or an external power supply for the analog inputs. For an internal
and 10, 11:
10 V supply: Connect AI 0, respectively AI 1- with GND.
Image 4-9
Interconnection example of the digital inputs with external 24 V power supply
Converter with CU250S-2 Control Unit
Operating Instructions, 01/2016, FW V4.7 SP6, A5E31759476B AE
Installing
4.6 Installing Control Unit
87
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