•
Incorrect compressor data in parameters
1-20
through
1-25
.
ALARM 14, Earth (ground) fault
There is a discharge from the output phases to ground,
either in the cable between the frequency converter and
the compressor or in the compressor itself.
Troubleshooting
•
Turn off the frequency converter and remove the
ground fault.
•
Measure the resistance to ground of the
compressor leads and the compressor with a
megohmmeter to check for ground faults in the
compressor.
ALARM 16, Short circuit
There is short-circuiting in the compressor or on the
compressor terminals.
Turn off the frequency converter and remove the short
circuit.
WARNING/ALARM 17, Control word timeout
There is no communication to the frequency converter.
The warning is only active when
parameter 8-04 Control
Timeout Function
is NOT set to OFF.
If
parameter 8-04 Control Timeout Function
is set to
Stop
and
Trip
, a warning appears and the frequency converter
ramps down until it trips, while giving an alarm.
Troubleshooting
•
Check connections on the serial communication
cable.
•
Increase
parameter 8-03 Control Timeout Time
.
•
Check operation of the communication
equipment.
•
Verify proper installation based on EMC
requirements.
ALARM 18, Start failed
The speed has not been able to exceed
1-77 Compressor
Start Max Speed [RPM]
during start within the allowed time
(set in
parameter 1-79 Compressor Start Max Time to Trip
).
This may be caused by a blocked motor.
Troubleshooting
•
Check fan resistance.
ALARM 30, Motor phase U missing
Motor phase U between the frequency converter and the
motor is missing.
Turn off the frequency converter and check motor phase U.
ALARM 31, Motor phase V missing
Motor phase V between the frequency converter and the
motor is missing.
Turn off the frequency converter and check motor phase V.
ALARM 32, Motor phase W missing
Motor phase W between the frequency converter and the
motor is missing.
Turn off the frequency converter and check motor phase
W.
ALARM 38, Internal fault
It may be necessary to contact your Danfoss supplier.
ALARM 44, Earth fault II
There is a discharge from the output phases to ground,
either in the cable between the frequency converter and
the compressor or in the compressor itself.
Troubleshooting
•
Turn off the frequency converter and remove the
ground fault.
•
Measure the resistance to ground of the
compressor leads and the compressor with a
megohmmeter to check for ground fault in the
compressor.
ALARM 46, Gate drive voltage low
The supply on the power card is out of range.
WARNING 47, Control Voltage Fault
The 24 V DC is measured on the control card. The external
24 V DC back-up supply may be overloaded, otherwise
contact your Danfoss supplier.
ALARM 49, Min. 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 trips.
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
.
ALARM 60, External interlock
External interlock has been activated. To resume normal
operation, apply 24 V DC to the terminal programmed for
external interlock and reset the frequency converter (via
serial communication, digital I/O, or by pressing [Reset]).
ALARM 69, Power card temperature
The temperature on the power card is either too high or
too low.
Troubleshooting
•
Ensure that the ambient operating temperature is
within the limits.
•
Check if the filters are clogged.
•
Check the fan operation.
•
Check the power card.
Troubleshooting
VLT
®
Compressor Drive CDS 803
72
Danfoss A/S © 06/2019 All rights reserved.
MG18P202
4
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