WARNING 48, 1.8 V supply low
The 1.8 V DC supply used on the control card is outside of
allowable limits. The power supply is measured on the
control card. Check for a defective control card. If an
option card is present, check for an overvoltage condition.
WARNING 49, Speed limit
When the speed is not within the specified range in
parameter 4-11 Motor Speed Low Limit [RPM]
and
parameter 4-13 Motor Speed High Limit [RPM]
, the
adjustable frequency drive shows a warning. When the
speed is below the specified limit in
parameter 1-86 Trip
Speed Low [RPM]
(except when starting or stopping), the
adjustable frequency drive 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.
ALARM 56, AMA interrupted by user
The user has interrupted the AMA.
ALARM 57, AMA internal fault
Try to restart AMA again. Repeated restarts can overheat
the motor.
ALARM 58, AMA Internal fault
Contact your Danfoss supplier.
WARNING 59, Current limit
The current is higher than the value in
parameter 4-18 Current Limit
. Ensure that motor data in
parameters 1-20 to 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/ALARM 61, Feedback error
An error between calculated speed and speed
measurement from feedback device. The function Warning/
Alarm/Disabling setting is in
parameter 4-30 Motor Feedback
Loss Function
. Accepted error setting in
parameter 4-31 Motor Feedback Speed Error
and the allowed
time the error occur setting in
parameter 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
parameter 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 cut-out 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
parameter 2-00 DC Hold/Preheat Current
at 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
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
VLT
®
Compressor Drives CDS 302/CDS 303
158
Danfoss A/S © Rev. 2013-07-03 All rights reserved.
MG34M422
7
7
Summary of Contents for VLT CDS 303
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