Current Sensors - Danfoss VLT FC Series Service Manual

D2h/D4h/D7h/D8h/J9 Unit Dis...

11.2.12 Current Sensors

NOTICE
PARTS VARIATIONS
Due to differences in manufacturer, some current sensors look different than the sensors shown in Illustration 11.6. LEM
is the manufacturer of current sensors used since the first quarter of 2016. Previously, Honeywell manufactured the
current sensors.
To remove or reinstall the current sensors, use the following steps. See Illustration 11.6.
Disassembly
1. Remove the power terminal mounting plate. Refer
to chapter 11.2.11 Power Terminal Mounting Plate.
2. Disconnect the current sensor cable from the
cable connector on each of the 3 current sensors.
3. Remove 6 screws (T20), 2 from each of the 3
current sensors.
4. Remove the current sensors from the unit.
MG94A502
Service Guide
Reassembly
Tighten fasteners according to chapter 14.1 Fastener Torque
Ratings.
1.
2.
3.
4.
5.
Danfoss A/S © 02/2019 All rights reserved.
Position 3 current sensors on top of the power
terminal mounting plate so that the cable
connectors face the back of the drive. Ensure that
the airflow arrows on the sensors point toward
the front of the drive.
Secure 6 thread-forming screws (T20), 2 in the
base of each current sensor. Torque to 2.0 Nm
(17.7 in-lb).
Connect the current sensors cables to the current
sensors, 1 cable to each current sensor.
Route the cables through the cable guides.
Replace the power terminal mounting plate. Refer
to chapter 11.2.11 Power Terminal Mounting Plate.
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