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 frequency converter shows a warning.
When the speed is below the specified limit in
1-86 Trip
Speed Low [RPM]
(except when starting or stopping) the
frequency converter will trip.
ALARM 50, AMA calibration failed
Contact your Danfoss supplier or Danfoss Service
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 settings.
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. AMA will not run.
56 ALARM, AMA interrupted by user
The user has interrupted the AMA.
ALARM 57, AMA internal fault
Try to restart AMA again. Repeated restarts may over heat
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
that the system can operate safely at a higher limit.
WARNING 60, External interlock
A digital input signal is indicating a fault condition external
to the frequency converter. An external interlock has
commanded the frequency converter to trip. Clear the
external fault condition. To resume normal operation,
apply 24 V DC to the terminal programmed for external
interlock. Reset the frequency converter.
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.
WARNING/ALARM 65, Control card over temperature
The cutout temperature of the control card is 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 frequency converter 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 frequency
converter whenever the motor is stopped by setting
2-00 DC Hold/Preheat Current
at 5% and
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
Loss of the 24 V DC signal on terminal 37 has caused the
filter to trip. To resume normal operation, apply 24 V DC to
terminal 37 and reset the filter.
ALARM 69, Power 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.
ALARM 70, Illegal frequency converter configuration
The control card and power card are incompatible. Contact
your supplier with the type code of the unit from the
nameplate and the part numbers of the cards to check
compatibility.
ALARM 80, Drive initialised to default value
Parameter settings are initialised to default settings after a
manual reset. Reset the unit to clear the alarm.
ALARM 92, No flow
A no-flow condition has been detected in the system.
22-23 No-Flow Function
is set for alarm. Troubleshoot the
system and reset the frequency converter after the fault
has been cleared.
ALARM 93, Dry pump
A no-flow condition in the system with the frequency
converter operating at high speed may indicate a dry
pump.
22-26 Dry Pump Function
is set for alarm.
Troubleshoot the system and reset the frequency converter
after the fault has been cleared.
Warnings and Alarms
VLT
®
HVAC Drive Operating Instructions
60
MG11AH02 - VLT
®
is a registered Danfoss trademark
8
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