Warnings And Alarms; List Of Warnings And Alarms - Danfoss VLT HVAC Basic Drive FC 101 Operating Manual

Operating Guide | VLT® HVAC Basic Drive FC 101

5 Warnings and Alarms

5.1 List of Warnings and Alarms

Table 19: Warnings and Alarms
Fault Alarm/ Fault text
num‐ warning
ber bit num‐
ber
2 16 Live zero er-
ror
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
44 28 Earth Fault
46 33 Control Volt-
age Fault
Danfoss A/S © 2019.11
Warn‐ Alarm Trip
ing locked
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 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.
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.
Motor is too hot due to more than 100% load for a long
time. See parameter 1-90 Motor Thermal Protection.
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,
30–90 kW units).
Motor phase U is missing. Check the phase. See parame-
ter 4-58 Missing Motor Phase Function.
Motor phase V is missing. Check the phase. See parame-
ter 4-58 Missing Motor Phase Function.
Motor phase W is missing. Check the phase. See parame-
ter 4-58 Missing Motor Phase Function.
Contact the local Danfoss supplier.
Discharge from output phases to ground, using the value
of parameter 15-31 InternalFaultReason if possible.
Control voltage is low. Contact the local Danfoss supplier.
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Warnings and Alarms