Siemens SIMATIC S7-1500 Automation System System Manual page 73

4. Insert the shield clamp from below into the shielding bracket in order to connect the cable
Functions of the shield contact
The shield contact:
● Is needed to fit cable shields (e.g., for analog modules).
● Interference currents on cable shields are diverted from the shield connection to ground
Reference
Further information on wiring the inputs and outputs can be found in the manuals for the
I/O modules.
S7-1500 Automation System
System Manual, 01/2013, A5E03461182-01
shielding (Figure 3).
Figure 6-14 Wiring front connectors for I/O modules with shield contact element (3)
via the mounting rail. The shielding connection is not required at cable entry into the
switchboard.
6.8 Front connector for the I/O modules
Wiring
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