1.5 Acoustic Noise or Vibration
If the motor or the equipment driven by the motor, e.g., a fan blade, is making noise or vibrations at certain frequencies, try
the following:
•
Speed Bypass, parameter group
4-6* Speed Bypass
•
Overmodulation,
14-03 Overmodulation
set to
[0] Off
•
Switching pattern and switching frequency parameter group
14-0* Inverter Switching
•
Resonance Dampening,
1-64 Resonance Dampening
1.6 Warnings and Alarms
Fault
number
Alarm/
Warning Bit
Number
Fault text
Warning
Alarm
Trip
locked
Cause of problem
2
16
Live zero error
X
X
Signal on terminal 53 or 54 is less than 50% of value set in
6-10 Terminal 53 Low Voltage, 6-12 Terminal 53 Low Current,
6-20 Terminal 54 Low Voltageor 6-22 Terminal 54 Low
Current. See also parameter group
6-0* Analog I/O Mode
4
14
Mains ph. loss
X
X
X
Missing phase on supply side or too high voltage imbalance.
Check supply voltage. See
14-12 Function at Mains Imbalance
7
11
DC over volt
X
X
Intermediate circuit voltage exceeds the limit.
8
10
DC under volt
X
X
Intermediate circuit voltage drops below the “voltage
warning low” limit.
9
9
Inverter overload
X
X
More than 100% load for too long.
10
8
Motor ETR over
X
X
Motor is too hot due to more than 100% load for too long.
See
1-90 Motor Thermal Protection
11
7
Motor th over
X
X
The thermistor or the thermistor connection is disconnected.
See
1-90 Motor Thermal Protection
.
13
5
Over Current
X
X
X
Inverter peak current limit is exceeded.
14
2
Earth Fault
X
X
Discharge from output phases to ground.
16
12
Short Circuit
X
X
Short-circuit in the motor or on the motor terminals.
17
4
Ctrl. word TO
X
X
No communication to the adjustable frequency drive. See
parameter group
8-0* General Settings.
24
50
Fan Fault
X
X
The fan is not working (Only on 400 V 40–125 hp [30–90 kW]
units).
30
19
U phase loss
X
X
Motor phase U is missing. Check the phase. See
4-58 Missing
Motor Phase Function
.
31
20
V phase loss
X
X
Motor phase V is missing. Check the phase. See
4-58 Missing
Motor Phase Function
.
32
21
W phase loss
X
X
Motor phase W is missing. Check the phase. See
4-58 Missing
Motor Phase Function
.
38
17
Internal fault
X
X
Contact the local Danfoss supplier.
44
28
Earth Fault
X
X
Discharge from output phases to ground, using the value of
15-31 Alarm Log Value
if possible.
47
23
Control Voltage
Fault
X
X
X
24 V DC may be overloaded.
48
25
VDD1 supply low
X
X
Control voltage low. Contact the local Danfoss supplier.
50
AMA calibration
failed
X
Contact the local Danfoss supplier.
Quick Guide
Quick Guide
34
Danfoss A/S © Rev. 2014-01-22 All rights reserved.
MG18A522
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