7.3.7 Motor Terminal Block
1.
Remove the input terminal block in accordance
with
chapter 7.3.6 Line Power Input Terminal Block
.
2.
Disconnect wiring to motor and brake (if present).
3.
Remove the EMC shield, between the line power
input and motor terminal blocks, by removing
one screw (T20).
4.
Remove the U output bus bar by removing the
one screw (T25 thread-forming) in the middle of
the bus bar, and the one bolt (T30) at the current
sensor end of the bus bar.
5.
Remove the V output bus bar by removing the
one screw (T25 thread-forming) in the middle of
the bus bar, and one bolt (T30) at the current
sensor end of the bus bar. (Note the V bolt is
shorter than U and W)
6.
Remove the W output bus bar by removing the
one screw (T25 thread-forming) in the middle of
the bus bar, and the one bolt (T30) at the current
sensor end of the bus bar.
7.
Remove the two screws (T25) at the bottom of
the terminal block.
8.
Remove the terminal by sliding it down to
disengage it from the metal clips holding it in
place.
Reinstall in reverse order of this procedure and tighten
hardware according to
7.3.8 Power Terminal Mounting Plate
1.
Remove the motor terminal in accordance with
chapter 7.3.7 Motor Terminal Block
2.
Remove the four screws (T20 thread-cutting), two
from each side of the plate.
3.
For IP21 (NEMA 1) and IP54 (NEMA 12) enclosures
only, remove three screws (T25) from the bottom
of the adjustable frequency drive.
4.
Unplug the mixing fan, located under the
mounting plate.
Reinstall in reverse order of this procedure and tighten
hardware according to
7.3.9 Current Sensors
1.
Remove power terminal mounting plate in
accordance with
2.
Disconnect the wire harness from each current
sensor. Note which connector attaches to each
current sensor.
3.
Remove six screws (T20) connecting the current
sensors to the power terminal mounting plate,
two per current sensor.
Reinstall in reverse order of this procedure and tighten
hardware according to
.
NOTICE!
Note for reassembly: The signal wire plug faces outward
since it is important for the current sensor to point in
the proper direction.
7.3.10 Mixing Fan
1.
Remove the power terminal mounting plate in
accordance with
2.
Remove the two screws attaching the fan to the
power terminal mounting plate.
Reinstall in reverse order of this procedure and tighten
hardware according to
.
7.3.11 Balance/High Frequency Card
7.3.11.1 400 V AC Power Size
1.
Remove the power terminal mounting plate in
accordance with
2.
Unplug the cable MK 100 on the balance/high
frequency card.
3.
Remove the one standoff (0.3 in [8 mm]) from the
corner of the card.
4.
Remove three nuts (0.3 in [8 mm]).
Disassembly and Assembly In...
Service Manual
MG94A222
Danfoss A/S © Rev. 2014-02-10 All rights reserved.
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Summary of Contents for VLT FC 103
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