Current Sensors - Danfoss VLT FC Series Service Manual

E1h–E4h Drive Disassembly a...

13.2.15 Current Sensors

To remove or reinstall the current sensors, use the
following steps. Refer to Illustration 13.14.
Disassembly
1. Remove the input plate. Refer to
chapter 13.2.9 Input Plate with Busbars and
chapter 13.2.10 Split Input Plate with Options.
2. Remove 12 nuts (13 mm), 2 from each end of the
3 motor busbars (starting with the left motor
busbar). Lift the 3 motor busbars from the drive.
3. Remove 3 nuts (13 mm), 1 from the upper end of
each current sensor busbar.
4. Remove 6 screws (T25), 2 from the middle of
each current sensor busbar.
5. Unplug 3 current sensor cables, 1 from the top of
each current sensor.
6. Unfasten 6 screws (T20), 2 from the base of each
current sensor.
7. Lift the 3 current sensor busbars with current
sensors from the drive.
MG94A502
Service Guide
NOTICE
ASSEMBLY NOTE
When installing current sensors, point the arrow on each
current sensor downward. Failure to install the current
sensors correctly can cause equipment malfunction.
Reassembly
Tighten fasteners according to chapter 14.1 Fastener Torque
Ratings.
1.
2.
3.
4.
5.
6.
7.
Danfoss A/S © 02/2019 All rights reserved.
Place each current sensor on a current sensor
busbar, and position the busbars in the drive.
Secure 6 screws (T20), 2 in the base of each
current sensor.
Fasten 3 nuts (13 mm), 1 in the upper end of
each current sensor busbar.
Secure 6 screws (T25), 2 in the middle of each
current sensor busbar.
Connect the 3 current sensor cables, 1 at the top
of each current sensor.
Position the motor busbars in the drive, starting
with the right busbar. Secure 12 nuts (13 mm), 2
in each end of the 3 motor busbars.
Reinstall the input plate. Refer to
chapter 13.2.9 Input Plate with Busbars and
chapter 13.2.10 Split Input Plate with Options.
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