Fault Messages - Danfoss VLT AQUA Design Manual

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VLT AQUA Drive Design Guide
Alarm Word and Extended Status Word
Bit Hex
0 00000001
1 00000002
2 00000004
3 00000008
4 00000010
5 00000020
6 00000040
7 00000080
8 00000100
9 00000200
10 00000400
11 00000800
12 00001000
13 00002000
14 00004000
15 00008000
16 00010000
17 00020000
18 00040000
19 00080000
20 00100000
21 00200000
22 00400000
23 00800000
24 01000000
25 02000000
26 04000000
27 08000000
28 10000000
29 20000000
30 40000000
Table 8.2: Description of Alarm Word, Warning Word and Extended Status Word
The alarm words, warning words and extended status words can be read out via serial bus or optional fieldbus for diagnosis. See also par. 16-90, 16-92
and 16-94.

8.1.1. Fault messages

WARNING 1, 10 Volts low:
The 10 V voltage from terminal 50 on the control card is below 10 V.
Remove some of the load from terminal 50, as the 10 V supply is over-
loaded. Max. 15 mA or minimum 590 Ω.
WARNING/ALARM 2, Live zero error:
The signal on terminal 53 or 54 is less than 50% of the value set in par.
6-10, 6-12, 6-20, or 6-22 respectively.
WARNING/ALARM 3, No motor:
No motor has been connected to the output of the frequency converter.
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 in case of a fault in the input rectifier on the
frequency converter.
Check the supply voltage and supply currents to the frequency converter.
WARNING 5, DC link voltage high:
The intermediate circuit voltage (DC) is higher than the overvoltage limit
of the control system. The frequency converter is still active.
WARNING 6, DC link voltage low:
The intermediate circuit voltage (DC) is below the undervoltage limit of
the control system. The frequency converter is still active.
Dec Alarm Word
1 Brake Check
2 Pwr. Card Temp
4 Earth Fault
8 Ctrl.Card Temp
16 Ctrl. Word TO
32 Over Current
64 Torque Limit
128 Motor Th Over
256 Motor ETR Over
512 Inverter Overld.
1024 DC under Volt
2048 DC over Volt
4096 Short Circuit
8192 Inrush Fault
16384 Mains ph. Loss
32768 AMA Not OK
65536 Live Zero Error
131072 Internal Fault
262144 Brake Overload
524288 U phase Loss
1048576 V phase Loss
2097152 W phase Loss
4194304 Fieldbus Fault
8388608 24 V Supply Low
16777216 Mains Failure
33554432 1.8V Supply Low
67108864 Brake Resistor
134217728 Brake IGBT
268435456 Option Change
536870912 Drive Initialised
1073741824 Safe Stop
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MG.20.N3.02 - VLT is a registered Danfoss trademark
Warning Word
Brake Check
Pwr. Card Temp
Earth Fault
Ctrl.Card Temp
Ctrl. Word TO
Over Current
Torque Limit
Motor Th Over
Motor ETR Over
Inverter Overld.
DC under Volt
DC over Volt
DC Voltage Low
DC Voltage High
Mains ph. Loss
No Motor
Live Zero Error
10V Low
Brake Overload
Brake Resistor
Brake IGBT
Speed Limit
Fieldbus Fault
24V Supply Low
Mains Failure
Current Limit
Low Temp
Voltage Limit
Unused
Unused
Unused
WARNING/ALARM 7, DC over voltage:
If the intermediate circuit voltage exceeds the limit, the frequency con-
verter trips after a time.
Possible corrections:
Select Over Voltage Control function in par. 2-17
Connect a brake resistor
Extend the ramp time
Activate functions in par. 2-10
Increase par. 14-26
Selecting OVC function will extend the ramp times.
8. Troubleshooting
Extended Status Word
Ramping
AMA Running
Start CW/CCW
Slow Down
Catch Up
Feedback High
Feedback Low
Output Current High
Output Current Low
Output Freq High
Output Freq Low
Brake Check OK
Braking Max
Braking
Out of Speed Range
OVC Active
155
8