Danfoss VLT FC 103 Operating Manual page 75

Maintenance, Diagnostics, a...
WARNING 49, Speed limit
The warning is shown when the speed is outside of the
specified range in parameter 4-11 Motor Speed Low Limit
[RPM] and parameter 4-13 Motor Speed High Limit [RPM].
When the speed is below the specified limit in
parameter 1-86 Compressor Min. Speed for Trip [RPM] (except
when starting or stopping), the drive trips.
ALARM 50, AMA calibration failed
Contact the Danfoss supplier or Danfoss Service
Department.
ALARM 51, AMA check U
nom
The settings for motor voltage, motor current, and motor
power are wrong.
Troubleshooting
•
Check the settings in parameters 1-20 to 1-25.
ALARM 52, AMA low I
nom
The motor current is too low.
Troubleshooting
•
Check the settings in parameter 1-24 Motor
Current.
ALARM 53, AMA motor too big
The motor is too large for the AMA to operate.
ALARM 54, AMA motor too small
The motor is too small for the AMA to operate.
ALARM 55, AMA parameter out of range
The AMA cannot run because the parameter values of the
motor are outside of the acceptable range.
ALARM 56, AMA interrupted by user
The AMA is manually interrupted.
ALARM 57, AMA internal fault
Try to restart the AMA. Repeated restarts can overheat the
motor.
ALARM 58, AMA Internal fault
Contact the Danfoss supplier.
WARNING 59, Current limit
The current is higher than the value in
parameter 4-18 Current Limit. Ensure that the motor data in
parameters 1-20 to 1-25 is set correctly. Increase the current
limit if necessary. Ensure that the system can operate safely
at a higher limit.
WARNING 60, External interlock
A digital input signal indicates a fault condition external to
the drive. An external interlock has commanded the drive
to trip. Clear the external fault condition. To resume
normal operation, apply 24 V DC to the terminal
programmed for external interlock, and reset the drive.
WARNING 61, Tracking Error
An error has been detected between the calculated motor
speed and the speed measurement from the feedback
device. The function for Warning/Alarm/Disable is set in
MG16P222
Operating Guide
and I
nom
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parameter 4-30 Motor Feedback Loss Function. Error setting
is found in parameter 4-31 Motor Feedback Speed Error.
Allowed error time is found in parameter 4-32 Motor
Feedback Loss Timeout. During the commissioning process,
this function can be useful.
WARNING 62, Output frequency at maximum limit
If the output frequency reaches the value set in
parameter 4-19 Max Output Frequency, the drive issues a
warning. The warning ceases when the output drops
below the maximum limit. If the drive is unable to limit
the frequency, it trips and issues an alarm. The latter may
happen in the flux mode if the drive loses control of the
motor.
Troubleshooting
•
Check the application for possible causes.
•
Increase the output frequency limit. Ensure that
the system can operate safely at a higher output
frequency.
ALARM 63, Mechanical brake low
The actual motor current has not exceeded the release
brake current within the start delay time window.
WARNING 64, Voltage Limit
The load and speed combination demands a motor
voltage higher than the actual DC-link voltage.
WARNING/ALARM 65, Control card over temperature
The cutout temperature of the control card is 85 °C
(185 °F).
Troubleshooting
•
Check that the ambient operating temperature is
within the limits.
•
Check for clogged filters.
•
Check the fan operation.
•
Check the control card.
WARNING 66, Heat sink temperature low
The drive is too cold to operate. This warning is based on
the temperature sensor in the IGBT module. Increase the
ambient temperature of the unit. Also, a trickle amount of
current can be supplied to the drive whenever the motor
is stopped by setting parameter 2-00 DC Hold/Preheat
Current to 5% and parameter 1-80 Function at Stop.
ALARM 67, Option module configuration has changed
One or more options have either been added or removed
since the last power-down. Check that the configuration
change is intentional and reset the unit.
ALARM 68, Safe Stop activated
Safe Torque Off (STO) has been activated. 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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