Current Sensor; Current Sensors - Danfoss VLT Series Service Manual

7.11 Current Sensor

1. Remove input terminal plate in accordance with
procedure.
2. Remove retaining nut (17 mm) connecting current
sensor bus bar to motor terminal bus bar.
3. Remove retaining nut (17 mm) or T50 screw,
depending on unit type, connecting current
sensor bus bar to IGBT over fan bus bar.
4. Note which cable is attached to current sensor.
Ensure that correct cable is attached upon
reassembly. Unplug cable from current sensor
being removed.
5. Remove the 2 retaining nuts (size varies with
model) from stud on baseplate and remove
sensor.
Reinstall in reverse order of this procedure. Tighten 17 mm
retaining nuts or T50 screw to 170 in-lbs (19.2 Nm).
7-10
VLT is a registered Danfoss trademark
Current sensor
Figure 7-9. Current Sensors
IGBT terminal bus bar
mounting screw
(Step 3)
Current sensor
mounting screws (2)
(Step 5)
Output motor terminal
bus bar retaining nut
(Step 2)