Table 8.2: Description Of Alarm Word, Warning Word And Extended Status Word - Danfoss VLT Series Design Manual

®
VLT HVAC Drive Design Guide
Alarm Word and Extended Status Word
Bit
0
1
2
3
4
5
6
7
8
9
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17
18
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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.
WARNING 1
10 Volts low:
The 10 V voltage from terminal 50 on the con-
trol card is below 10 V.
Remove some of the load from terminal 50, as
the 10 V supply is overloaded. 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.
Hex Dec Alarm Word
00000001 1 Brake Check
00000002 2 Pwr. Card Temp
00000004 4 Earth Fault
00000008 8 Ctrl.Card Temp
00000010 16 Ctrl. Word TO
00000020 32 Over Current
00000040 64 Torque Limit
00000080 128 Motor Th Over
00000100 256 Motor ETR Over
00000200 512 Inverter Overld.
00000400 1024 DC under Volt
00000800 2048 DC over Volt
00001000 4096 Short Circuit
00002000 8192 Inrush Fault
00004000 16384 Mains ph. Loss
00008000 32768 AMA Not OK
00010000 65536 Live Zero Error
00020000 131072 Internal Fault
00040000 262144 Brake Overload
00080000 524288 U phase Loss
00100000 1048576 V phase Loss
00200000 2097152 W phase Loss
00400000 4194304 Fieldbus Fault
00800000 8388608 24 V Supply Low 24V Supply Low
01000000 16777216 Mains Failure
02000000 33554432 1.8V Supply Low Current Limit
04000000 67108864 Brake Resistor
08000000 134217728 Brake IGBT
10000000 268435456 Option Change
20000000 536870912 Drive Initialised
40000000 1073741824 Safe Stop
®
MG.11.B2.02 - VLT is a registered Danfoss trademark
Warning Word Extended
Word
Brake Check Ramping
Pwr. Card Temp AMA Running
Earth Fault Start CW/CCW
Ctrl.Card Temp Slow Down
Ctrl. Word TO Catch Up
Over Current Feedback High
Torque Limit Feedback Low
Motor Th Over Output Current High
Motor ETR Over Output Current Low
Inverter Overld. Output Freq High
DC under Volt Output Freq Low
DC over Volt Brake Check OK
DC Voltage Low Braking Max
DC Voltage High Braking
Mains ph. Loss Out of Speed Range
No Motor OVC Active
Live Zero Error
10V Low
Brake Overload
Brake Resistor
Brake IGBT
Speed Limit
Fieldbus Fault
Mains Failure
Low Temp
Voltage Limit
Unused
Unused
Unused
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 convert-
er.
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 sys-
tem. 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.
8. Troubleshooting
Status
8
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