Warnings And Alarms - Danfoss VLT HVAC Basic Drive FC 101 Quick Manual

Warnings and Alarms

5 Warnings and Alarms
Fault
number warning bit
number
2
5 5
4
7
8
9
10
11
13
14
16
17
24
30
31
32
38
44
46
47
50
51
52
53
54
55
56
44
Alarm/ Fault text Warning
16 Live zero error
14 Mains ph. loss
11 DC overvolt
10 DC undervolt
9 Inverter overload
8 Motor ETR over
7 Motor th over
5 Overcurrent
2 Ground Fault
12 Short circuit
4 Ctrl. word TO
50 Fan Fault
19 U phase loss
20 V phase loss
21 W phase loss
17 Internal fault
28 Ground Fault
Control Voltage
33
Fault
23 24 V supply low
AMA calibration
failed
15 AMA Unom,Inom
– AMA low Inom
– AMA big motor
– AMA small mot
– AMA par. range
AMA user
–
interrupt
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VLT®HVAC Basic Drive FC 101
Alarm Trip Cause of problem
locked
Signal on terminal 53 or 54 is less than 50% of the value set
in 6-10 Terminal 53 Low Voltage, 6-12 Terminal 53 Low Current,
X X –
6-20 Terminal 54 Low Voltage, or 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
X X X imbalance. Check the supply voltage. See 14-12 Function at
Mains Imbalance.
X X – Intermediate circuit voltage exceeds the limit.
Intermediate circuit voltage drops below voltage warning low
X X –
limit.
X X – More than 100% load for a long time.
Motor is too hot due to more than 100% load for a long
X X –
time. See 1-90 Motor Thermal Protection.
The thermistor or the thermistor connection is disconnected.
X X –
See 1-90 Motor Thermal Protection.
X X X Inverter peak current limit is exceeded.
– X X Discharge from output phases to ground.
– X X Short circuit in motor or on motor terminals.
No communication to the adjustable frequency drive. See
X X –
parameter group 8-0* General Settings.
The heatsink cooling fan is not working (only on 400 V, 30–
X X –
90 kW (40–125 HP) units).
Motor phase U is missing. Check the phase. See 4-58 Missing
– X X
Motor Phase Function.
Motor phase V is missing. Check the phase. See 4-58 Missing
– X X
Motor Phase Function.
Motor phase W is missing. Check the phase. See 4-58 Missing
– X X
Motor Phase Function.
– X X Contact the local Danfoss supplier.
Discharge from output phases to ground, using the value of
– X X
15-31 Alarm Log Value if possible.
– X X
Control voltage is low. Contact the local Danfoss supplier.
X X X 24 V DC supply may be overloaded.
– X –
Contact the local Danfoss supplier.
The setting of motor voltage, motor current, and motor
– X –
power is wrong. Check the settings.
– X – The motor current is too low. Check the settings.
– X – The motor is too big to perform AMA.
– X – The motor is too small to perform AMA.
The parameter values found from the motor are outside the
– X –
acceptable range.
– X – The AMA has been interrupted by the user.
MG18A622