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

Quick Guide

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
•
Over-modulation, 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 Alarm/ Fault text
number Warning
Bit
Number
2 16 Live zero error
4 14 Mains ph. loss
7 11 DC over volt
8 10 DC under volt
9 9 Inverter overload
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
Control Voltage
47 23
Fault
48 25 VDD1 supply low
AMA calibration
50
failed
51 15 AMA Unom,Inom
®
VLT HVAC Basic Drive FC 101 Quick Guide
Warning 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 limit.
Intermediate circuit voltage drops below "voltage warning
X X
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
Thermistor or thermistor connection is disconnected. See
X X
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 frequency converter. See parameter
X X
group 8-0* General Settings
X X The fan is not working (Only on 400 V 30-90 kW 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.
The setting of motor voltage, motor current and motor
X
power is presumably wrong. Check the settings.
MG18A502 - Rev. 2013-08-09
1 1
33