Troubleshooting; Acoustic Noise Or Vibration; List Of Warnings And Alarms - Danfoss VLT CDS 803 Operating Manual

Operating Guide | VLT® Compressor Drive CDS 803

5 Troubleshooting

5.1 Acoustic Noise or Vibration

If the compressor is making noise or vibrations at certain frequencies, set the speed bypass parameters in parameter 4-6* Speed Bypass.

5.2 List of Warnings and Alarms

Table 18: Warnings and Alarms
Fault Alarm/ Fault text
num‐ warning
ber bit num‐
ber
2 16 Live zero error
3 No motor
4 14 Mains ph. loss
7 11 DC over volt
8 10 DC under volt
9 9 Inverter over-
load
10 8 Motor ETR over
11 7 Motor th over
13 5 Over Current
14 2 Earth Fault
16 12 Short Circuit
17 4 Ctrl. word TO
24 50 Fan Fault
30 19 U phase loss
31 20 V phase loss
32 21 W phase loss
38 17 Internal fault
40 | Danfoss A/S © 2019.12
Warn‐ Alarm Trip
ing lock
X X –
– X –
X X X
X X –
X X –
X X –
X X –
X X –
X X X
– X X
– X X
X X –
X X –
– X X
– X X
– X X
– X X
Cause of problem
Signal on terminal 53 or 54 is less than 50% of the value
set in parameter 6-10 Terminal 53 Low Voltage, parameter
6-12 Terminal 53 Low Current, parameter 6-20 Terminal 54
Low Voltage, or parameter 6-22 Terminal 54 Low Current.
See also parameter group 6-0* Analog I/O Mode.
The motor is not connected properly to the drive.
Missing phase on the supply side or too high voltage im-
balance. Check the supply voltage. See parameter 14-12
Function at Mains Imbalance.
DC-link voltage exceeds the limit.
DC-link voltage drops below voltage warning low-limit.
More than 100% load for a long time.
For 6.0–10 kW (8.0–15 hp) drives: The motor is too hot
due to more than 100% load for a long time. See parame-
ter 1-90 Motor Thermal Protection.For 18.5–30 kW (22–
40 hp) drives: Parameter 1-90 Motor Thermal Protection is
disabled. Alarm 10 is used for compressor overload.
Thermistor or thermistor connection is disconnected. See
parameter 1-90 Motor Thermal Protection.
Inverter peak current limit is exceeded.
Discharge from output phases to ground.
Short circuit in motor or on motor terminals.
No communication to drive. See parameter group 8-0*
General Settings.
The heat sink cooling fan is not working (only on 400 V,
30 kW (40 hp) units).
Motor phase U is missing. Check the phase.
Motor phase V is missing. Check the phase.
Motor phase W is missing. Check the phase.
Contact the local Danfoss supplier.
AQ321748767627en-000101 / 130R0570
Troubleshooting