Description Of Alarm Word, Warning Word, And Extended Status Word; Warning/Alarm 2, Live Zero Error; Warning 5, Dc Link Voltage High/Warning 6, Dc Link Voltage Low; Warning/Alarm 7, Dc Overvoltage - Danfoss VLT AutomationDrive FC 302 Programming Manual

Troubleshooting
Bit Hex
26 04000000
27 08000000 134217728 Brake IGBT (A27)
28 10000000 268435456 Option change
29 20000000 536870912 Drive initialized
30 40000000 1073741824 Safe stop (A68)
31 80000000 2147483648 Mech. brake low
6 6
Table 6.3 Description of Alarm Word, Warning Word, and Extended Status Word
The alarm words, warning words and extended status
words can be read out via a serial bus or optional fieldbus
for diagnostics. See also parameter 16-94 Ext. Status Word.
WARNING 1, 10 Volts low
The control card voltage is less than 10 V from terminal 50.
Remove some of the load from terminal 50, as the 10 V
supply is overloaded. Maximum 15 mA or minimum 590 Ω.
A short circuit in a connected potentiometer or incorrect
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
parameter 6-01 Live Zero Timeout Function. The signal on 1
of the analog inputs is less than 50% of the minimum
value programmed for that input. Broken wiring or a faulty
device sending the signal can cause this condition.
Troubleshooting
•
Check connections on all analog mains terminals.
-
-
-
•
Check that the drive programming and switch
settings match the analog signal type.
•
Perform an input terminal signal test.
330
VLT
Dec Alarm word Alarm word 2
67108864 Brake resistor Motor rotating
(A25) unexpectedly
(A122)
Reserved
Reserved
(A67)
Encoder loss
(A80) (A90)
PTC thermistor
(A74)
Dangerous
(A63) failure (A72)
Control card terminals 53 and 54 for
signals, terminal 55 common.
®
VLT General Purpose I/O MCB 101
terminals 11 and 12 for signals, terminal
10 common.
®
VLT Analog I/O Option MCB 109
terminals 1, 3, and 5 for signals,
terminals 2, 4, and 6 common.
Danfoss A/S © 10/2018 All rights reserved.
®
AutomationDrive FC 301/302
Warning word
Low temp (W66)
Voltage limit
(W64)
Encoder loss
(W90)
Output freq. lim.
(W62)
Safe stop (W68)
Extended status
word
WARNING/ALARM 3, No motor
No motor is 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. Options are programmed in
parameter 14-12 Response to Mains Imbalance.
Troubleshooting
•
Check the supply voltage and supply currents to
the frequency converter.
WARNING 5, DC link voltage high
The DC-link voltage (DC) is higher than the high-voltage
warning limit. The limit depends on the drive voltage
rating. The unit is still active.
WARNING 6, DC link voltage low
The DC-link voltage (DC) is lower than the low-voltage
warning limit. The limit depends on the drive voltage
rating. The unit is still active.

WARNING/ALARM 7, DC overvoltage

If the DC-link voltage exceeds the limit, the frequency
converter trips after a certain time.
Troubleshooting
•
Connect a brake resistor.
•
Extend the ramp time.
•
Change the ramp type.
•
Activate the functions in parameter 2-10 Brake
Function.
•
Increase parameter 14-26 Trip Delay at Inverter
Fault.
•
If the alarm/warning occurs during a power sag,
use kinetic back-up (parameter 14-10 Mains
Failure).
Warning Extended
word 2 status word
Power Limit Unused
Generator
Reserved Unused
Reserved Unused
BackEMF too Unused
high
PTC thermi- Unused
stor (W74)
Protection mode
MG33MP02