Danfoss VLT FC Series Service Guide

10.2.12 Balance/High Frequency Card
To remove or reinstall the balance/high frequency card, use
the following steps. See Illustration 10.13 and
Illustration 10.14.
Disassembly in 240/400 V AC units
1. Remove the power terminal mounting plate. Refer
to chapter 10.2.9 Power Terminal Mounting Plate.
2. Unplug the cable from the MK100 connector on
the balance/high frequency card.
3. Remove 1 stando (8 mm) from the corner of the
card.
4. Remove 2 nuts (8 mm) and 1 screw (T25) from
the card. Two of the fasteners also hold in place
the DC(+) and DC(-) wires.
5. Remove the balance/high frequency card and
insulator sheet from the drive.
Reassembly in 240/400 V AC units
Tighten hardware according to chapter 14.1 Fastener Torque
Ratings.
1. Position the insulator sheet and balance/high
frequency card in the drive.
2. Fasten 2 nuts (8 mm) and 1 screw (T25) in the
card. Two of the nuts also hold in place the DC(+)
and DC(-) wires.
3. Secure 1
stando (8 mm) in the corner of the
card.
4. Attach the cable to the MK100 connector on the
balance/high frequency card.
5. Replace the power terminal mounting plate. Refer
to chapter 10.2.9 Power Terminal Mounting Plate.
Disassembly in 690 V AC units
1. Remove the power terminal mounting plate. Refer
to chapter 11.2.11 Power Terminal Mounting Plate.
2. Unplug the cable from the MK100 connector on
the balance/high frequency card.
3. Remove 1 stando (8 mm) from the corner of the
card.
4. Remove 3 nuts (8 mm) and 1 screw (T20) from
the card. One of the nuts and the screw also hold
in place the DC(+) and DC(-) wires.
5. Remove the balance/high frequency card and
insulator sheet from the drive.
Reassembly in 690 V AC units
Tighten hardware according to chapter 14.1 Fastener Torque
Ratings.
1. Position the insulator sheet and balance/high
frequency card in the drive.
2. Fasten 3 nuts (8 mm) and 1 screw (T20) in the
card. One of the nuts and the screw also hold in
place the DC(+) and DC(-) wires.
3. Secure 1 stando (8 mm) in the corner of the
card.
4. Attach the cable to the MK100 connector on the
balance/high frequency card.
5. Replace the power terminal mounting plate. Refer
to chapter 11.2.11 Power Terminal Mounting Plate.
D1h/D3h/D5h/D6h/J8 Drive Di...
VLT
®
FC Series, D1h–D8h, Da2/Db2/Da4/Db4, E1h–E4h, J8/J9
146 Danfoss A/S © 02/2019 All rights reserved. MG94A502
1010

Danfoss VLT FC Series Specifications

General

Brand	Danfoss
Model	VLT FC Series
Category	DC Drives
Language	English