ABB ACS880-17 - Grounding the Outer Shields of the Control Cables at the Cabinet Entry

Electrical installation 93
Grounding the outer shields of the control cables at the cabinet entry
Applicability
This section applies to drives without solid cable conduit plate (no options +C129, +C134,
+H358).
Procedure
Ground the outer shields of all control cables 360 degrees at the EMI conductive cushions
as follows:
1. Loosen the tightening screws of the EMI conductive cushions and pull the cushions
apart.
2. Cut adequate holes to the rubber grommets in the entry plate and lead the cables
through the grommets and the cushions into the cabinet.
3. Strip off the cable plastic sheath above the entry plate just enough to ensure proper
connection of the bare shield and the EMI conductive cushions.
4. Tighten the two tightening screws so that the EMI conductive cushions press tightly
round the bare shield.
Note 1: Keep the shields continuous as close to the connection terminals as possible.
Secure the cables mechanically at the entry strain relief.
Note 2: If the outer surface of the shield is non-conductive:
• Cut the shield at the midpoint of the bare part. Be careful not to cut the conductors or
the grounding wire (if present).
• Turn the shield inside out to expose its conductive surface.
View from above
1 Tightening screw
2 EMI conductive cushion
3 Strain relief
4Grommet
5 Entry plate
2
3
4
5
1
2
1