Connecting Differential Inputs; Connecting Expansion Inputs/Outputs - Siemens SIMATIC S5 Manual

IP 265
3.2.3

Connecting Differential Inputs

The signal cables of encoders with error signals are to be connected to the 15-pin sub D socket of
the IP 265 labelled "INTERFACE". The 3 differential inputs of the IP 265 are designed for 5 V.
The maximum length of the signal cables is 32 m. The signal cables must be shielded.
Prefabricated standard cables from Siemens may be used for this purpose ( Appendix G).
Figure 3-3 shows a connection example for the 5 V differential inputs of the IP 265.
Sensor supply
5 V 0 V
Pulse encoder
V
a
5 V
Figure 3-3. Typical Connection for 5 V Differential Inputs
Note
Do not use prefabricated cables, and if a sensor with 5 V error signals is to be
connected to the IP 265, the 5 V sensor supply cable is also to be shielded
( Figure 3-3).
3.2.4

Connecting Expansion Inputs/Outputs

For the electrical connection of two IP 265 modules, a prefabricated, shielded standard cable is
available (expansion cable). Use the expansion cable to link the two 15-pin sub D sockets marked
with "INTERFACE".
Note
The expansion inputs/outputs are to be connected exclusively via the expansion cable
especially provided for this purpose ( Appendix G).
The expansion inputs/outputs are connected to the 15-pin sub D socket labelled "INTERFACE"
together with the differential inputs. When using the expansion inputs/outputs, the 5 V differential
inputs cannot be used.
EWA 4NEB 812 6130-02a
IP 265 ground
(central ground)
Shield
Installation Guidelines
6
11
1
I
7 N
12
2
T
8 E
13
3
R
9 F
14
4
A
10
C
15
5
E
3-3