Danfoss VLT AutomationDrive FC 301 Programming Manual page 202

Troubleshooting
Bit Hex
24 01000000
25 02000000
26 04000000
27 08000000 134217728 Brake IGBT
5 5
28 10000000 268435456 Option Change
29 20000000 536870912 Drive Initialised
30 40000000 1073741824 Safe Stop (A68) PTC Thermi-stor
31 80000000 2147483648 Mech. brake
Table 5.3 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
diagnostics. See also 16-94 Ext. Status Word.
WARNING 1, 10 Volts low
The control card voltage is below 10 V from terminal 50.
Remove some of the load from terminal 50, as the 10 V
supply is overloaded. Max. 15 mA or minimum 590 Ω.
A short circuit in a connected potentiometer or improper
wiring of the potentiometer can cause this condition.
Troubleshooting
Remove the wiring from terminal 50. If the
warning clears, the problem is with the wiring. If
the warning does not clear, replace the control
card.
WARNING/ALARM 2, Live zero error
This warning or alarm only appears if programmed in
6-01 Live Zero Timeout Function. The signal on one of the
analog inputs is less than 50% of the minimum value
programmed for that input. Broken wiring or faulty device
sending the signal can cause this condition.
Troubleshooting
Check connections on all the analog input
terminals. Control card terminals 53 and 54 for
signals, terminal 55 common. MCB 101 terminals
11 and 12 for signals, terminal 10 common. MCB
109 terminals 1, 3, 5 for signals, terminals 2, 4, 6
common).
Check that the frequency converter programming
and switch settings match the analog signal type.
Perform Input Terminal Signal Test.
200
VLT
Dec Alarm Word Alarm Word 2 Warning
16777216 Mains Failure reserved
(A36)
33554432 1.8V Supply Current Limit
Low (A48) (A59)
67108864 Brake Resistor Motor Rota-ting
(A25) Unexpectedly
(A122)
reserved
(A27)
reserved
(A67)
Encoder loss
(A80) (A90)
(A74)
Dangerous
low (A63) failure (A72)
®
AutomationDrive FC 301/302 Programming Guide
Warning
Word Word 2
Mains Failure reserved
(W36)
Current Limit reserved
(W59)
Low Temp reserved
(W66)
Voltage Limit reserved
(W64)
Encoder loss reserved
(W90)
Output freq. BackEMF too
lim. (W62) High
Safe Stop PTC Thermi-
(W68) stor (W74)
Extended
Status Word
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
for a fault in the input rectifier on the frequency converter.
Options are programmed at 14-12 Function at Mains
Imbalance.
Troubleshooting
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
high-voltage warning limit. The limit is dependent on the
frequency converter voltage rating. The unit is still active.
WARNING 6, DC link voltage low
The intermediate circuit voltage (DC) is lower than the low-
voltage warning limit. The limit is dependent on the
frequency converter voltage rating. The unit is still active.
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
MG33MH02 - Rev. 2013-09-30
Extended Extended
Status Word Status Word
2
Unused Drive Bypass
Unused Fire Mode
Unused External
Interlock
Unused Firemode
Limit Exceed
Unused FlyStart active
Unused
Unused
Protection Mode