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9.4.59 WARNING/ALARM 61, Feedback Error
Cause
An error between calculated speed and speed measurement from feedback device.
Troubleshooting
Check the settings for warning/alarm/disabling in
parameter 4-30 Motor Feedback Loss Function
.
Set the tolerable error in
parameter 4-31 Motor Feedback Speed Error
.
Set the tolerable feedback loss time in
parameter 4-32 Motor Feedback Loss Timeout.
9.4.60 WARNING 62, Output Frequency at Maximum Limit
Cause
The output frequency has reached the value set in
parameter 4-19 Max Output Frequency
.
Troubleshooting
Check the application for possible causes.
Increase the output frequency limit. Be sure that the system can operate safely at a higher output frequency.
The warning clears when the output drops below the maximum limit.
9.4.61 ALARM 63, Mechanical Brake Low
Cause
The actual motor current has not exceeded the release brake current within the start delay time window.
9.4.62 WARNING 64, Voltage Limit
Cause
The load and speed combination demands a motor voltage higher than the actual DC-link voltage.
9.4.63 WARNING/ALARM 65, Control Card Overtemperature
Cause
The cutout temperature of the control card has exceeded the upper limit.
Troubleshooting
Check that the ambient operating temperature is within the limits.
Check for clogged filters.
Check fan operation.
Check the control card.
9.4.64 WARNING 66, Heat Sink Temperature Low
Cause
The drive is too cold to operate. This warning is based on the temperature sensor in the IGBT module.
Troubleshooting
Increase the ambient temperature of the unit.
Supply a trickle amount of current to the drive whenever the motor is stopped by setting
parameter 2-00 DC Hold/Preheat Cur-
rent
to 5% and
parameter 1-80 Function at Stop
.
9.4.65 ALARM 67, Option Module Configuration has Changed
Cause
One or more options have either been added or removed since the last power-down.
Troubleshooting
Check that the configuration change is intentional and reset the unit.
9.4.66 ALARM 68, Safe Stop Activated
Cause
Safe Torque Off (STO) has been activated.
Troubleshooting
To resume normal operation, apply 24 V DC to terminal 37, then send a reset signal (via bus, digital I/O, or by pressing [Reset]).
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Danfoss A/S © 2021.10
Maintenance, Diagnostics, and
Troubleshooting
VLT® AutomationDrive FC 302
Operating Guide
Summary of Contents for D9h
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