Acoustic Noise Or Vibration; Warnings And Alarms - Danfoss VLT HVAC Basic Drive FC 101 Quick Manual

Quick Guide
1 1

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 Warning Bit
Number
2
4
7
8
9
10
11
13
14
16
17
24
30
31
32
38
44
47
48
50
34
Alarm/ Fault text Warning
16 Live zero error
14 Mains ph. loss
11 DC over volt
10 DC under volt
9 Inverter overload
8 Motor ETR over
7 Motor th over
5 Over Current
2 Earth 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 Earth Fault
Control Voltage
23
Fault
25 VDD1 supply low
AMA calibration
failed
Danfoss A/S © Rev. 2014-01-22 All rights reserved.
Quick Guide
Alarm Trip Cause of problem
locked
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,
X X
6-20 Terminal 54 Low Voltageor 6-22 Terminal 54 Low
Current. See also parameter group 6-0* Analog I/O Mode
Missing phase on supply side or too high voltage imbalance.
X X X
Check supply voltage. See 14-12 Function at Mains Imbalance
X X Intermediate circuit voltage exceeds the limit.
Intermediate circuit voltage drops below the "voltage
X X
warning low" limit.
X X More than 100% load for too long.
Motor is too hot due to more than 100% load for too long.
X X
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 the motor or on the motor terminals.
No communication to the adjustable frequency drive. See
X X
parameter group 8-0* General Settings.
The fan is not working (Only on 400 V 40–125 hp [30–90 kW]
X X
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 X
24 V DC may be overloaded.
X X Control voltage low. Contact the local Danfoss supplier.
X
Contact the local Danfoss supplier.
MG18A522