Danfoss VLT AQUA Drive FC 202 Operating Manual page 114

Operating Guide | VLT® AQUA Drive FC 202
8.4.28 ALARM 31, Motor Phase V Missing
Cause
Motor phase V between the drive and the motor is missing.
Troubleshooting
HIGH VOLTAGE
AC 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 installation, start-up, and maintenance.
-
• Disconnect power before proceeding.
• Remove the power from the drive and check motor phase V.
8.4.29 ALARM 32, Motor Phase W Missing
Cause
Motor phase W between the drive and the motor is missing.
Troubleshooting
HIGH VOLTAGE
AC 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 installation, start-up, and maintenance.
-
• Disconnect power before proceeding.
• Remove the power from the drive and check motor phase W.
8.4.30 ALARM 33, Inrush Fault
Cause
Too many power-ups have occurred within a short time period.
Troubleshooting
• Let the unit cool to operating temperature.
• Check potential DC-link fault to ground.
112 | Danfoss A/S © 2020.01
W A R N I N G
W A R N I N G
Maintenance, Diagnostics, and
Troubleshooting
AQ275652274277en-000101 / 130R0708