Power Supply Of The Ip - Siemens SIMATIC S5 Manual

Installation Guidelines
3.3

Power Supply of the IP 265

The IP 265 must be connected to a power supply for operation:
24 V DC supply
Load voltage is supplied via the two-pole connector on the front panel of the IP 265. The 24 V DC
external supply enables the connection of 24 V sensors and actuators in the plant to the digital
inputs and outputs of the module (load circuits).
You can connect the following:
• PS 931 power supply module ( Appendix G)
or
• Siemens load power supply of the 6EW1 series.
When connecting other load power supplies, please note that the voltage must be in the range of 20
to 30 V (including ripple).
The IP 265 is a non-floating module. The 24 V DC load circuits and the control circuit of the PLC
have a common reference potential.
Figure 3-4 shows the simplified connection of the IP 265 to the PLC.
Central
ground
Connection for
common refe-
rence potential
Load power
supply
Figure 3-4. Simplified Representation of Nonfloating Connection of the IP 265 to the PLC
Note
When using the IP 265, you have to connect the ground potential of the IP 265 load
voltage connector to the ground of the CPU via an external connection at central ground
( Figure 3-4). Please ensure that the connecting cable has a low impedance (must be
as short as possible).
3-4
PS CPU
M L+
L+
M
IP 265
IP
L+
M
Connector for
load voltage
EWA 4NEB 812 6130-02a