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46 Electrical installation
Connecting the control cables for the supply unit
￭
Connection diagram
See the delivery-specific circuit diagrams, and the default I/O diagram.
￭
Connection procedure
WARNING!
Obey the instructions in Safety instructions for ACS880 liquid-cooled multidrive
cabinets and modules (3AXD50000048633 [English]). 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 (page 35)
2. Run the control cables into the cabinet as described in section
shields of the control cables at the cabinet entry
3. Route the control cables as described in section
cabinet (page
48).
4. Connect the control cables as described in section
Grounding the outer shields of the control cables at the cabinet entry
Ground the outer shields of all control cables 360 degrees at the EMI conductive cushions
as follows (example constructions are shown below, the actual hardware may vary):
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 put the cables through
the grommets and the cushions.
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.
1
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.
before you start the work.
4
Electrical safety
Grounding the outer
below.
Routing the control cables inside the
Connecting control cabling (page
3
2
49).
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