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VLT® Flow Drive FC 111
Programming Guide
5.5.36 WARNING/ALARM 92, No Flow
Cause
A no-flow condition has been detected in the system. Parameter 22-23 No-Flow Function is set for alarm.
Troubleshooting
•
Troubleshoot the system and reset the drive after the fault has been cleared.
5.5.37 WARNING/ALARM 93, Dry Pump
A no-flow condition in the system with the drive operating at high speed may indicate a dry pump. Parameter 22-26 Dry Pump Func-
tion is set for warning or alarm.
Troubleshooting
•
Troubleshoot the system.
•
Reset the drive when the fault is cleared.
5.5.38 WARNING/ALARM 94, End of Curve
Feedback is lower than the set point. This may indicate a leakage in the system. Parameter 22-50 End of Curve Function is set for
warning or alarm.
Troubleshooting
•
Troubleshoot the system.
•
Reset the drive when the fault is cleared.
5.5.39 WARNING/ALARM 95, Broken Belt
Cause
Torque is below the torque level set for no load, indicating a broken belt. See parameter group 22-6* Broken Belt Detection.
Troubleshooting
•
Troubleshoot the system.
•
Reset the drive after the fault is cleared.
5.5.40 ALARM 99, Locked Rotor
Cause
The rotor is blocked.
For 18–30 kW: If the protection is triggered more than 10 repeated times, auto reset transitions to require a manual operation to
clear the alarm.
Troubleshooting
•
Ensure that the rotor can operate freely.
•
Check the settings in parameter group 1-1* Motor Selection.
•
Check the settings in parameter group 1-2* Motor Data.
5.5.41 ALARM 101, Flow/pressure Info Missing
Cause
Sensorless-pump table is missing or wrong.
Troubleshooting
•
Download sensorless-pump table again.
5.5.42 ALARM 126, Motor Rotating
Cause
High back-EMF voltage.
Troubleshooting
•
Stop the rotor of the PM motor.
202 | Danfoss A/S © 2021.07
Troubleshooting
AU363928304090en-000101 / 130R0982
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