Faults, Alarms, And Possible Causes - WEG CFW-11 User Manual

Troubleshooting and Maintenance
When an alarm situation ("ALARM" (AXXX)) is detected:
The keypad displays the "ALARM" code and description.
The "STATUS" LED changes to yellow.
The PWM pulses are not blocked (the inverter is still operating).

6.2 FAULTS, ALARMS, AND POSSIBLE CAUSES

Fault/Alarm
F006
Imbalance or
Input Phase Loss
A010
Rectifier High
Temperature
F011
Rectifier
Overtemperature
F021
DC Link Undervoltage
6
F022
DC Link Overvoltage
F030
Power Module U Fault
F034
Power Module V Fault
6-2 | CFW-11
Table 6.1 - Faults, alarms and possible causes
Description
Mains voltage imbalance too high or phase missing
in the input power supply.
Note:
- If the motor is unloaded or operating with reduced
load this fault may not occur.
- Fault delay is set at parameter P0357.
P0357 = 0 disables the fault.
A high temperature alarm was detected by the NTC
temperature sensors located in the rectifier modules.
Note:
- This is valid only for the following models:
CFW110086T2, CFW110105T2, CFW110045T4,
CFW110058T4, CFW110070T4 and
CFW110088T4.
- It may be disabled by setting P0353 = 2 or 3.
An overtemperature fault was detected by the NTC
temperature sensors located in the rectifier modules.
Note:
- This is valid only for the following models:
CFW110086T2, CFW110105T2, CFW110045T4,
CFW110058T4, CFW110070T4 and
CFW110088T4.
DC Link undervoltage condition occurred.
DC Link overvoltage condition occurred.
Desaturation of IGBT occured in power module U.
Note:
This protection is available only for frame size D
models.
Desaturation of IGBT occured in power module V.
Note:
This protection is available only for frame size D
models.
Possible Causes
Phase missing at the inverter's input power supply.
Input voltage imbalance >5 %.
Surrounding air temperature is too high (>50 °C (122 °F))
and output current is too high.
Blocked or defective fan.
Inverter heatsink is completely covered with dust.
The input voltage is too low and the DC Link voltage
dropped below the minimum permitted value (monitor the
value at parameter P0004):
Ud < 223 V - for a 200 / 240 V three-phase input voltage
Ud < 170 V - for a 200 / 240 V single-phase input voltage
(models CFW11XXXXS2 or CFW11XXXXB2) (P0296 = 0).
Ud < 385 V - for a 380 V input voltage (P0296 = 1).
Ud < 405 V - for a 400 / 415 V input voltage (P0296 = 2).
Ud < 446 V - for a 440 / 460 V input voltage (P0296 = 3).
Ud < 487 V - for a 480 V input voltage (P0296 = 4).
Phase loss in the input power supply.
Pre-charge circuit failure.
Parameter P0296 was set to a value above of the power
supply rated voltage.
The input voltage is too high and the DC Link voltage
surpassed the maximum permitted value:
Ud > 400 V - for 220 / 230 V input models (P0296 = 0).
Ud > 800 V - for 380 / 480 V input models (P0296 = 1, 2,
3, or 4).
Inertia of the driven-load is too high or deceleration time is
too short.
Wrong settings for parameters P0151, or P0153, or P0185.
Short-circuit between motor phases U and V or U and W.
Short-circuit between motor phases V and U or V and W.