Danfoss VLT AutomationDrive FC 301 Programming Manual page 358

Troubleshooting
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
6 6
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.
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 Function at 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.
356
®
VLT
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 © 10/2019 All rights reserved.
AutomationDrive FC 301/302
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).
Table 6.4 shows the limit values for voltage warnings/
alarms. The values are the DC-link voltage values of the
frequency converter with a tolerance of ±5 %. The
corresponding mains voltage equals the DC-link voltage
value divided by 1.35.
Warning/alarm 8, DC under
voltage [VDC]
Warning 6, DC link voltage low
[VDC]
Warning 5, DC link voltage high
w/o brake [VDC]
Warning 5, DC link voltage high
w brake [VDC]
Warning/alarm 7, DC overvoltage
[VDC]
Table 6.4 Voltage Warning/Alarm Limits
WARNING/ALARM 8, DC under voltage
If the DC-link voltage drops below the undervoltage limit,
the drive checks for 24 V DC back-up supply. If no 24 V DC
back-up supply is connected, the drive trips after a fixed
time delay. The time delay varies with unit size.
Troubleshooting
•
Check that the supply voltage matches the drive
voltage.
•
Perform an input voltage test.
•
Perform a soft-charge circuit test.
WARNING/ALARM 9, Inverter overload
The frequency converter has run with more than 100%
overload for too long and is about to cut out. The counter
for electronic thermal inverter protection issues a warning
at 98% and trips at 100% with an alarm. The frequency
converter cannot be reset until the counter is below 90%.
3 x 200– 3 x 380– 3 x 525–
240 V 500 V 600 V
185 373 532
205 410 585
390 810 943
405 840 965
410 855 975
M0013101