Alarm, Warning And Extended Status Word - Danfoss VLT Micro Drive FC 51 Programming Manual

Troubleshooting ®
VLT Micro Drive FC 51 Programming Guide

6.1.1 Alarm, Warning and Extended Status Word

Par. 16-90
Bit Hex Dec AlarmWord
0 1 1 Brake check
1 2 2 Pwr.card temp
2 4 4 Earth Fault
3 8 8
4 10 16 Ctrl.word TO
5 20 32 Over Current
6 40 64
7 80 128 Motor th over
8 100 256 Motor ETR over
9 200 512 Inverter overload
10 400 1024 DC under volt
11 800 2048 DC over volt
12 1000 4096 Short Circuit
13 2000 8192
14 4000 16384 Mains ph. loss
15 8000 32768 "AMT Not OK"
16 10000 65536 Live zero error
17 20000 131072 Internal fault
18 40000 262144
19 80000 524288 U phase loss
20 100000 1048576 V phase loss
21 200000 2097152 W phase loss
22 400000 4194304
23 800000 8388608 Control Voltage Fault
24 1000000 16777216
25 2000000 33554432
26 4000000 67108864 Brake resistor short-circuit
27 8000000 134217728 Brake IGBT short-circuit
28 10000000 268435456 M4/M5: Earth Fault (Desat)
29 20000000 536870912 Drive initialised
30 40000000 1073741824
31 80000000 2147483648 Mech. brake low
Table 6.3
The alarm words, warning words and extended staus
words can be read out via serial bus for diagnose. See also
16-94 Ext. Status Word.
WARNING/ALARM 2, Live zero error
Signal on terminal 53 or 60 is less than 50% of value set in
6-10 Terminal 53 Low Voltage, 6-12 Terminal 53 Low Current
and 6-22 Terminal 60 Low Current.
WARNING/ALARM 4, Mains phase loss
A phase is missing on the supply side, or the mains
voltage imbalance is too high. This message also appears
for a fault in the input rectifier on the frequency converter.
Troubleshooting: Check the supply voltage and supply
currents to the frequency converter. The fault may be
caused by mains distortions. Installing Danfoss Line Filter
may rectify this problem.
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Par. 16-92 Par. 16-94
WarningWord ExtendedStatusWord
Ramping
Pwr.card temp AMT running
Start CW/CCW
Slow down
Ctrl.word TO Catch up
Over Current Above Feedback High
Torque limit Below Feedback Low
Motor th over Output current high
Motor ETR over Output current low
Inverter overload Above Frequency High
DC under volt Below Frequency Low
DC over volt
Braking
Mains ph. loss
OVC active
Live zero error AC brake
Above Reference High
Below Reference Low
Local Ref./Remote Ref.
Current limit
MotorPhaseMissing
Undefined
DatabaseBusy
WARNING/ALARM 7, DC overvoltage
If the intermediate circuit voltage exceeds the limit, the
frequency converter trips after a time.
Troubleshooting
Connect a brake resistor
Extend the ramp time
Change the ramp type
Activate the functions in 2-10 Brake Function
Increase 14-26 Trip Delay at Inverter Fault
The fault may be caused by mains distortions. Installing
Danfoss Line Filter may rectify this problem.
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