ABB ACS880-07, Hardware Manual

Page: 100 / 274

Grounding the outer shields of the control cables at the cabinet lead-through
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 lead-through plate and lead the
cables through the grommets and the cushions into the cabinet.
3. Strip off the cable plastic sheath above the lead-through 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.
View from above
Electrical installation 97
Connecting the control cables
See chapter Control units of the drive (page 127 ) for the default I/O connections of the
inverter unit (with the ACS880 primary control program). The default I/O connections can
be different with some hardware options, see the circuit diagrams delivered with the drive
for the actual wiring. For other control programs, see their firmware manuals.

Control cable connection procedure
WARNING! Obey the instructions in chapter Safety instructions . If you ignore
them, injury or death, or damage to the equipment can occur.
1. Stop the drive (if running) and do the steps in section Precautions before electrical
work on page 19 before you start the work.
2. Run the control cables into the auxiliary control cubicle (ACU) as described in section
Grounding the outer shields of the control cables at the cabinet lead-through below.
3. Route the control cables as described in section Routing the control cables inside the
cabinet (page 99 ).
4. Connect the control cables as described starting on page 99 .
Grounding the outer shields of the control cables at the cabinet lead-through
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 lead-through plate and lead the
cables through the grommets and the cushions into the cabinet.
3. Strip off the cable plastic sheath above the lead-through 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.
1 Tightening screw
2 EMI conductive cushion
3 Strain relief
4 Grommet
5 Lead-through plate
2
3
4
5
1
2
1
Electrical installation 97
Connecting the control cables
See chapter Control units of the drive (page 127 ) for the default I/O connections of the
inverter unit (with the ACS880 primary control program). The default I/O connections can
be different with some hardware options, see the circuit diagrams delivered with the drive
for the actual wiring. For other control programs, see their firmware manuals.

Control cable connection procedure
WARNING! Obey the instructions in chapter Safety instructions . If you ignore
them, injury or death, or damage to the equipment can occur.
1. Stop the drive (if running) and do the steps in section Precautions before electrical
work on page 19 before you start the work.
2. Run the control cables into the auxiliary control cubicle (ACU) as described in section
Grounding the outer shields of the control cables at the cabinet lead-through below.
3. Route the control cables as described in section Routing the control cables inside the
cabinet (page 99 ).
4. Connect the control cables as described starting on page 99 .
Grounding the outer shields of the control cables at the cabinet lead-through
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 lead-through plate and lead the
cables through the grommets and the cushions into the cabinet.
3. Strip off the cable plastic sheath above the lead-through 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.
View from above
1 Tightening screw
2 EMI conductive cushion
3 Strain relief
4 Grommet
5 Lead-through plate
2
3
4
5
1
2
1
Tightening screw 1
EMI conductive cushion 2
Strain relief 3
Grommet 4
Lead-through plate 5
Note 1: Keep the shields continuous as close to the connection terminals as possible.
Secure the cables mechanically at the lead-through 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.
• Cover the turned shield and the stripped cable with copper foil to keep the shielding
continuous.
100 Electrical installation