WARNING 49, Speed limit
When the speed is not within the specified range in
4-11 Motor Speed Low Limit [RPM]
and
4-13 Motor Speed
High Limit [RPM]
, the Adjustable frequency drive will show
a warning. When the speed is below the specified limit in
1-86 Trip Speed Low [RPM]
(except when starting or
stopping) the Adjustable frequency drive will trip.
ALARM 50, AMA calibration failed
Contact yourDanfoss supplier or DanfossService
Department.
ALARM 51, AMA check U
nom
and I
nom
The settings for motor voltage, motor current, and motor
power are wrong. Check the settings in parameters 1-20 to
1-25.
ALARM 52, AMA low I
nom
The motor current is too low. Check the setting in
4-18 Current Limit
.
ALARM 53, AMA motor too big
The motor is too big 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 parameter values of the motor are outside of the
acceptable range. AMAwill not run.
ALARM 56, AMA interrupted by user
The AMA has been interrupted by the user.
ALARM 57, AMA timeout
Try to restart AMA again. Repeated restarts may overheat
the motor.
ALARM 58, AMA internal fault
Contact your Danfoss supplier.
WARNING 59, Current limit
The current is higher than the value in
4-18 Current Limit
.
Ensure that Motor data in parameters 1-20 through 1-25
are set correctly. Possibly increase the current limit. Be sure
the system can operate safely at a higher limit.
ALARM 60, Ext. Interlock
A digital input signal is indicating a fault condition external
to the Adjustable frequency drive. An external interlock has
commanded the Adjustable frequency drive to trip. Clear
the external fault condition. To resume normal operation,
apply 24V DC to the terminal programmed for external
interlock. Reset the Adjustable frequency drive.
WARNING/ALARM 61, Tracking error
An error between calculated speed and speed
measurement from feedback device. The function Warning/
Alarm/Disabling setting is in
4-30 Motor Feedback Loss
Function
. Accepted error setting in
4-31 Motor Feedback
Speed Error
and the allowed time the error occur setting in
4-32 Motor Feedback Loss Timeout
. During a commissioning
procedure the function may be effective.
WARNING 62, Output frequency at maximum limit
The output frequency has reached the value set in
4-19 Max Output Frequency
. Check the application to
determine the cause. Possibly increase the output
frequency limit. Be sure the system can operate safely at a
higher output frequency. The warning will clear when the
output drops below the maximum limit.
ALARM 63, Mechanical brake low
The actual motor current has not exceeded the “release
brake” current within the “Start delay” time window.
WARNING/ALARM 65, Control card over temperature
The cutout temperature of the control card is 176°F [80
°
C].
Troubleshooting
Check that the ambient operating temperature is
within limits.
Check for clogged filters.
Check fan operation.
Check the control card.
WARNING 66, Heatsink temperature low
The Adjustable frequency 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
Adjustable frequency drive whenever the motor is stopped
by setting
2-00 DC Hold/Preheat Current
at 5% and
1-80 Function at Stop
.
ALARM 67, Option change
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 Adjustable frequency
drive.
ALARM 68, Safe Stop
Loss of the 24V DC signal on terminal 37 has caused the
Adjustable frequency drive to trip. To resume normal
operation, apply 24V DC to terminal 37 and reset the
Adjustable frequency drive.
ALARM 69, Power card temperaturePower card
temperature
The temperature sensor on the power card is either too
hot or too cold.
Troubleshooting
Check that the ambient operating temperature is
within limits.
Check for clogged filters.
Check fan operation.
Check the power card.
Warnings and Alarms
VLT
®
AutomationDrive Instruction
Manual
MG.33.AI.22 - VLT
®
is a registered Danfoss trademark
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