Bit Hex
Dec
Alarm word
Alarm word 2
Warning word
Warning
word 2
Extended
status word
26 04000000 67108864 Brake resistor
(A25)
Motor rotating
unexpectedly
(A122)
Low temp (W66)
Power Limit
Generator
Unused
27 08000000 134217728 Brake IGBT (A27)
Reserved
Voltage limit
(W64)
Reserved
Unused
28 10000000 268435456 Option change
(A67)
Reserved
Encoder loss
(W90)
Reserved
Unused
29 20000000 536870912 Drive initialized
(A80)
Encoder loss
(A90)
Output freq. lim.
(W62)
BackEMF too
high
Unused
30 40000000 1073741824 Safe stop (A68)
PTC thermistor
(A74)
Safe stop (W68)
PTC thermi-
stor (W74)
Unused
31 80000000 2147483648 Mech. brake low
(A63)
Dangerous
failure (A72)
Extended status
word
Protection mode
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.
-
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.
•
Check that the drive programming and switch
settings match the analog signal type.
•
Perform an input terminal signal test.
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
).
Troubleshooting
VLT
®
AutomationDrive FC 301/302
330
Danfoss A/S © 10/2018 All rights reserved.
MG33MP02
6
6
Summary of Contents for VLT AutomationDrive FC 302
Page 2: ......