Procedure - ABB ACS150 User Manual

Procedure

1. On IT (ungrounded) systems and corner grounded TN systems, disconnect the
internal EMC filter by removing the screw at EMC. For 3-phase U-type drives
(with type code ACS150-03U-), the screw at EMC is already removed at the
factory and replaced by a plastic screw.
WARNING! If a drive whose EMC filter is not disconnected is installed on an IT
system [an ungrounded power system or a high resistance-grounded (over
30 ohms) power system], the system will be connected to earth potential through the
EMC filter capacitors of the drive. This may cause danger or damage the drive.
If a drive whose EMC filter is not disconnected is installed on a corner grounded TN
system, the drive will be damaged.
2. Fasten the grounding conductor (PE) of the input power cable under the
grounding clamp. Connect the phase conductors to the U1, V1 and W1 terminals.
Use a tightening torque of 0.8 N·m (7 lbf in.).
3. Strip the motor cable and twist the shield to form as short a pigtail as possible.
Fasten the twisted shield under the grounding clamp. Connect the phase
conductors to the U2, V2 and W2 terminals. Use a tightening torque of 0.8 N·m
(7 lbf in.).
4. Connect the optional brake resistor to the BRK+ and BRK- terminals with a
shielded cable using the same procedure as for the motor cable in step 3.
5. Secure the cables outside the drive mechanically.
1
EMC
VAR
Tightening torque:
0.8 N·m (7 lbf in.)
2 4 3
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Electrical installation
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3