Danfoss VLT HVAC User Manual

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 7.2: 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.
7.1.1. Warning/Alarm list
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 ohm.
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 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.
VLT
®
HVAC Drive Operating Instructions 7. Troubleshooting
MG.11.A4.02 - 09.10.06. VLT
®
is a registered Danfoss trademark 123
7

Danfoss VLT HVAC Specifications

General

Brand	Danfoss
Model	VLT HVAC
Category	Controller
Language	English