1.
Repeat the steps described in Electrical safety precautions (page 17).
2.
Remove the front cover(s). See section Connecting the power cables (page 92).
3. Cut adequate holes into the rubber grommets and slide the grommets onto the
cables. Slide the cables through the holes of the bottom plate and attach the
grommets to the holes.
4. Route the cables as shown below.
5. Ground the outer shields of all control cables 360 degrees at a grounding clamp in
the cable entry box. Tighten the clamp to 1.5 N·m (13 lbf·in). Keep the shields
continuous as close to the terminals of the control unit as possible. Secure the cables
mechanically at the clamps below the control unit. Frames R1 to R3: Ground also
the pair-cable shields and grounding wires at the cable entry box grounding clamp.
6. Frames R4 to R9: Ground the pair-cable shields and all grounding wires to the clamp
below the control unit.
7. Connect the conductors to the appropriate terminals of the control unit and tighten
to 0.5 N·m (5 lbf·in).
8. For connecting the fieldbus cables, see appropriate quick installation guide:
Code (Multilin-
gual)
Name
3AUA0000085966
ACS880-01 quick installation guide for frames R1 to R3
3AUA0000099663
ACS880-01 quick installation guide for frames R4 and R5
3AUA0000099689
ACS880-01 quick installation guide for frames R6 to R9
9.
Note:
• Leave the other ends of the control cable shields unconnected or ground them
indirectly via a high-frequency capacitor with a few nanofarads, eg, 3.3 nF / 630
V. The shield can also be grounded directly at both ends if they are in the same
ground line with no significant voltage drop between the end points.
• Keep any signal wire pairs twisted as close to the terminals as possible. Twisting
the wire with its return wire reduces disturbances caused by inductive coupling.
Electrical installation – IEC 109
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