Wiring
6.11 Connecting the supply voltage to the CPU/interface module
Distributed I/O system
System Manual, 09/2019, A5E03576849-AJ
111
6.11 Connecting the supply voltage to the CPU/interface module
Introduction
The supply voltage of the CPU/interface module is supplied by means of a 4-pin connector
plug located on the front of the CPU/interface module.
Power supply unit
Only use power supply units of type SELV/PELV with safe electrically isolated functional
extra low voltage (≤ 28.8 V DC).
Connection for supply voltage (X80)
The connections have the following meaning:
Ground of the supply voltage
Ground of the supply voltage for looping through (permitted value 10 A)
+ 24 V DC of the supply voltage for looping through (permitted value 10 A)
+ 24 V DC of the supply voltage
1L+ and 2L+ and 1M and 2M are internally jumpered.
Figure 6-11 Supply voltage connection
The maximum cross-section of the connection is 2.5 mm
2
without wire-end ferrule or
1.5 mm
2
with wire-end ferrule. A strain relief is not present. The connector plugs provide you
with the option of looping the supply voltage through without interruption, even when it is
unplugged.
Requirements
● Only wire up the connector plug when the supply voltage is turned off.
● Follow the wiring rules (Page 98).
Required tools
3 to 3.5 mm screwdriver
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