Motor Terminal Block - Danfoss VLT FC Series Service Manual

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

11.2.9 Motor Terminal Block

To remove or reinstall the motor terminal block, use the
following steps. Refer to Illustration 11.3 and
Illustration 11.4.
Disassembly
1. Remove the mains input terminal block. Refer to
chapter 11.2.6 Mains Input Terminal Block.
2. Remove the optional brake terminal, if present.
Refer to chapter 11.2.8 Brake Terminal Block
(Optional).
3. Disconnect wiring to the motor, and remove the
U/V/W terminal label.
4. Remove the EMC shield:
4a Remove 1 screw (T25).
4b Lift the EMC shield from the drive.
5. Remove the U motor busbar:
5a Remove 1 thread-forming screw (T25)
from the middle of the U busbar.
5b Unfasten 1 bolt (T40) from the U busbar.
6. Remove the V motor busbar:
6a Remove 1 thread-forming screw (T25)
from the middle of the V busbar.
6b Unfasten 1 bolt (T40) from the V busbar.
7. Remove the W motor busbar:
7a Remove 1 thread-forming screw (T25)
from the middle of the W busbar.
7b Unfasten 1 bolt (T40) from the W
busbar.
8. Remove 3 current sensor cylinder busbars.
9. Remove 2 screws (T25) from the bottom of the
motor terminal block.
10. Remove the motor terminal block by sliding it
down to disengage it from the 2 metal retaining
clips.
MG94A502
Service Guide
Reassembly
Tighten fasteners according to chapter 14.1 Fastener Torque
Ratings.
1.
2.
3.
4.
5.
6.
7.
8.
9.
10.
11.
Danfoss A/S © 02/2019 All rights reserved.
Position the output terminal block by sliding it
upward under the 2 metal retaining clips on the
power terminal mounting plate.
Fasten 2 machine screws (T25) at the bottom of
the terminal block.
Position the 3 Nomex tubes, 1 in the middle of
each current sensor.
Insert 3 cylinder busbars, 1 inside each Nomex
tube.
Replace the U motor busbar:
5a Slide the insulator sleeve over the U
busbar.
5b Fasten 1 screw (T30) in the current
sensor end of the busbar.
5c Fasten 1 thread-forming screw (T25) in
the middle of the busbar.
Replace the V motor busbar:
6a Fasten 1 screw (T30) in the current
sensor end of the busbar.
6b Fasten 1 thread-forming screw (T25) in
the middle of the busbar.
Replace the W motor busbar:
7a Fasten 1 screw (T30) in the current
sensor end of the busbar.
7b Fasten 1 thread-forming screw (T25) in
the middle of the busbar.
Position the EMC shield between the mains input
terminal block and motor terminal block and
secure with 1 screw (T25).
Replace the optional brake terminal, if present.
Refer to chapter 11.2.8 Brake Terminal Block
(Optional).
Replace the mains input terminal block. Refer to
chapter 11.2.6 Mains Input Terminal Block.
Reconnect wiring to the motor terminals, and
replace the U/V/W terminal label.
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