Siemens SIMATIC S7-1500 System Manual page 91

Connecting
6.10 Connecting cable shields
Using a shielding bus
Proceed as follows to use a shield bus:
1. Strip the cable shielding.
2. Attach the shield to a grounded shield bus after the point where the cable enters the
cabinet.
3. Run the shielded cable as far as the module but do not establish a connection to the
shield there.
Using a shield contact on the SIMATIC Drive Controller
1. Loosen the shield contact bracket
screw, Torx T10).
2. Strip the cable shielding and insert the cable.
3. Attach the retaining bracket so that the cable shield and cable
shield support by the retaining bracket (tightening torque 0.8 Nm or 7.1 lbf in).
①
②
Figure 6-1
Unconnected cable shields cause electric shock
Hazardous touch voltages can occur through capacitive cross-coupling due to unconnected
cable shields.
• Connect at least one end of cable shields and unused conductors of cables to the
90
Shield contact bracket
Cable shield
Shield contact at the SIMATIC Drive Controller
WARNING
grounded enclosure potential.
①
far enough to create space under the bracket (M3
System Manual, 11/2019, A5E46600094-AA
②
are pressed against the
SIMATIC Drive Controller