Danfoss VLT FC Series Service Manual page 74
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Also See for VLT FC Series:
- Operating instructions manual (64 pages) ,
- Operating manual (26 pages) ,
- Installation manual (12 pages)
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Troubleshooting
WARNING
HIGH VOLTAGE
Drives contain high voltage when connected to AC mains
input, DC supply, or load sharing. Failure to perform
installation, start-up, and maintenance by qualified
personnel can result in death or serious injury.
•
Only qualified personnel must perform instal-
lation, start-up, and maintenance.
•
Before performing any service or repair work,
use an appropriate voltage measuring device to
make sure that there is no remaining voltage on
the drive.
6
6
Troubleshooting
•
Remove the power from the drive and check
motor phase U.
ALARM 31, Motor phase V missing
Motor phase V between the drive and the motor is
missing.
WARNING
HIGH VOLTAGE
Drives contain high voltage when connected to AC mains
input, DC supply, or load sharing. Failure to perform
installation, start-up, and maintenance by qualified
personnel can result in death or serious injury.
•
Only qualified personnel must perform instal-
lation, start-up, and maintenance.
•
Before performing any service or repair work,
use an appropriate voltage measuring device to
make sure that there is no remaining voltage on
the drive.
Troubleshooting
•
Remove the power from the drive and check
motor phase V.
ALARM 32, Motor phase W missing
Motor phase W between the drive and the motor is
missing.
72
®
VLT
FC Series, D1h–D8h, Da2/Db2/Da4/Db4, E1h–E4h, J8/J9
HIGH VOLTAGE
Drives contain high voltage when connected to AC mains
input, DC supply, or load sharing. Failure to perform
installation, start-up, and maintenance by qualified
personnel can result in death or serious injury.
•
•
Troubleshooting
•
ALARM 33, Inrush fault
Too many power-ups have occurred within a short time
period.
Troubleshooting
•
•
WARNING/ALARM 34, Fieldbus communication fault
The fieldbus on the communication option card is not
working.
WARNING/ALARM 35, Option fault
An option alarm is received. The alarm is option-specific.
The most likely cause is a power-up or a communication
fault.
Danfoss A/S © 02/2019 All rights reserved.
WARNING
Only qualified personnel must perform instal-
lation, start-up, and maintenance.
Before performing any service or repair work,
use an appropriate voltage measuring device to
make sure that there is no remaining voltage on
the drive.
Remove the power from the drive and check
motor phase W.
Let the unit cool to operating temperature.
Check potential DC-link fault to ground.
MG94A502
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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