Danfoss vlt aqua, Instruction Manual, Page: 153 / 184

Alarm Word and Extended Status Word
Bit
Hex Dec Alarm Word Warning Word Extended Status Word
0 00000001 1 Brake Check Brake Check Ramping
1 00000002 2 Pwr. Card Temp Pwr. Card Temp AMA Running
2 00000004 4 Earth Fault Earth Fault Start CW/CCW
3 00000008 8 Ctrl.Card Temp Ctrl.Card Temp Slow Down
4 00000010 16 Ctrl. Word TO Ctrl. Word TO Catch Up
5 00000020 32 Over Current Over Current Feedback High
6 00000040 64 Torque Limit Torque Limit Feedback Low
7 00000080 128 Motor Th Over Motor Th Over Output Current High
8 00000100 256 Motor ETR Over Motor ETR Over Output Current Low
9 00000200 512 Inverter Overld. Inverter Overld. Output Freq High
10 00000400 1024 DC under Volt DC under Volt Output Freq Low
11 00000800 2048 DC over Volt DC over Volt Brake Check OK
12 00001000 4096 Short Circuit DC Voltage Low Braking Max
13 00002000 8192 Inrush Fault DC Voltage High Braking
14 00004000 16384 Mains ph. Loss Mains ph. Loss Out of Speed Range
15 00008000 32768 AMA Not OK No Motor OVC Active
16 00010000 65536 Live Zero Error Live Zero Error
17 00020000 131072 Internal Fault 10V Low
18 00040000 262144 Brake Overload Brake Overload
19 00080000 524288 U phase Loss Brake Resistor
20 00100000 1048576 V phase Loss Brake IGBT
21 00200000 2097152 W phase Loss Speed Limit
22 00400000 4194304 Fieldbus Fault Fieldbus Fault
23 00800000 8388608 24 V Supply Low 24V Supply Low
24 01000000 16777216 Mains Failure Mains Failure
25 02000000 33554432 1.8V Supply Low Current Limit
26 04000000 67108864 Brake Resistor Low Temp
27 08000000 134217728 Brake IGBT Voltage Limit
28 10000000 268435456 Option Change Unused
29 20000000 536870912 Drive Initialised Unused
30 40000000 1073741824 Safe Stop Unused
Table 9.2: 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.
9.1.1 Fault messages
WARNING 1, 10 Volts low:
The 10 V voltage from terminal 50 on the control card is below 10 V.
Remove a portion 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
Terminal 53 Low Voltage , par. 6-12 Terminal 53 Low Current , par.
6-20 Terminal 54 Low Voltage , or par. 6-22 Terminal 54 Low Current
respectively.
WARNING/ALARM 3, No motor:
No motor has been connected to the output of the adjustable frequency
drive.
WARNING/ALARM 4, Line phase loss:
A phase is missing on the supply side, or the AC line voltage imbalance
is too high.
This message also appears in case of a fault in the input rectifier on the
adjustable frequency drive.
Check the supply voltage and supply currents to the adjustable frequency
drive.
WARNING 5, DC link voltage high:
The intermediate circuit voltage (DC) is higher than the overvoltage limit
of the control system. The adjustable frequency drive is still active.
WARNING 6, DC link voltage low:
The intermediate circuit voltage (DC) is below the undervoltage limit of
the control system. The adjustable frequency drive is still active.
WARNING/ALARM 7, DC overvoltage:
If the intermediate circuit voltage exceeds the limit, the adjustable fre-
quency drive trips after a given period of time.
Possible corrections:
Select O ver V oltage C ontrol function in par. 2-17 Over-voltage
Control
Connect a brake resistor
Extend the ramp time
Activate functions in par. 2-10
Brake Function
Increase par. 14-26 Trip Delay at Inverter Fault
Selecting the OVC function will extend the ramp times.
VLT
®
AQUA Drive
Instruction Manual 9 Troubleshooting
MG.20.M5.22 - VLT
®
is a registered Danfoss trademark
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