Balance/High Frequency Card - Danfoss VLT FC Series Service Manual
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- Operating instructions manual (64 pages) ,
- Operating manual (26 pages) ,
- Installation manual (12 pages)
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D2h/D4h/D7h/D8h/J9 Unit Dis...
11.2.13 Balance/High Frequency Card
To remove or reinstall the balance/high frequency card for 240/400 V AC or 690 V AC drives, use the following steps. Refer
to Illustration 11.7.
Disassembly in 240/400 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 standoff (8 mm) from the corner of the
card.
4.
Remove 3 nuts (8 mm) from the card. Two of the
nuts 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.
Place the insulator sheet and balance/high
frequency card in the drive.
2.
Fasten 3 nuts (8 mm) in the card. Two of the nuts
also hold in place the DC(+) and DC(-) wires.
3.
Fasten 1 standoff (8 mm) in the corner of the
card.
4.
Connect 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.
MG94A502
Service Guide
Disassembly in 690 V AC units
1.
2.
3.
4.
5.
Reassembly in 690 V AC units
Tighten hardware according to chapter 14.1 Fastener Torque
Ratings.
1.
2.
3.
4.
5.
Danfoss A/S © 02/2019 All rights reserved.
Remove the power terminal mounting plate. Refer
to chapter 11.2.11 Power Terminal Mounting Plate.
Unplug the cable from the MK100 connector on
the balance/high frequency card.
Remove 1 standoff (8 mm) from the corner of the
card.
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.
Remove the balance/high frequency card and
insulator sheet from the unit.
Place the insulator sheet and balance/high
frequency card in the unit.
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.
Fasten 1 standoff (8 mm) in the corner of the
card.
Connect the cable to the MK100 connector on
the balance/high frequency card.
Replace the power terminal mounting plate. Refer
to chapter 11.2.11 Power Terminal Mounting Plate.
11
11
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Troubleshooting
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Questions and answers
How do I clear log S:28[M26] in my danfoss vfd
How can clear log S:28[M26]in my danfoss vfd
To clear log S:28[M26] in your Danfoss VLT FC Series VFD, reset the unit. This clears alarms and warnings, as noted for similar faults like ALARM 78. Make sure the issue causing the log has been resolved before resetting.
This answer is automatically generated