Connection Procedure (Us); Grounding The Motor Cable Shield At The Motor End - ABB ACS880-07 Hardware Manual

98 Electrical installation

Connection procedure (US)


1. Do the steps in section
the work.
2. Open the cabinet door.
3. Open the swing-out frame (if installed).
4. Plan cable access and mark the conduit plate accordingly for the input and output
power and control cables.
5. Remove the conduit plate from the drive cabinet and cut holes as needed for the
conduit connections. Note: Never cut metal in or around an equipment cabinet. Metal
debris can cause damage to electrical equipment and hazardous conditions.
6. Reinstall the conduit plate to cabinet and connect all electrical conduits as needed to
conduit plate. Do not leave any open holes at the top of the cabinet.
7. Run the motor power cables and separate ground cable (if present) from the motor to
cabinet.
8. Connect the motor power cable shields and separate ground cable (if present) to the
ground bar at the top of the cabinet.
9. Connect the motor phase conductors to the output power terminals U2, V2 and W2.
10. For drives with external brake resistors (option +D150 and no +D151):
•
Run the power cables from the brake resistor to the cabinet including the proper
grounding cable.
•
Connect the ground cable to the ground bar at top of cabinet.
•
Connect the brake resistor power cables to the R- and R+ terminals.
11. Make sure that all power is disconnected and reconnection is not possible. Use proper
safe disconnect procedures according to local codes.
12. Run the AC power supply cables and separate ground cables (if present) from the
supply source to the cabinet.
13. Connect AC power supply cable shields and separate ground cables (if present) to the
ground bar at top of cabinet.
14. Connect AC supply phase conductors to terminals L1, L2 and L3.
15. Reinstall the shroud(s) and mounting plates.

Grounding the motor cable shield at the motor end


Always ground the motor cable shield at the motor end. For minimum radio frequency
interference, ground the motor cable shield 360 degrees at the lead-through of the motor
terminal box
See also Continuous motor cable shield or enclosure for equipment on the motor cable
page 77.
Precautions before electrical work on page 16 before you start
on