WEG CFW-11 User Manual page 88

Fault/Alarm
F038 Desaturation of IGBT occured in power module W.
Power Module W Fault Note:
This protection is available only for frame size D
models.
F042 Desaturation of dynamic braking IGBT occured.
DB IGBT Fault Note:
This protection is available only for frame size D
models.
A046 Load is too high for the used motor.
High Load on Motor Note:
It may be disabled by setting P0348 = 0 or 2.
A047 An IGBT overload alarm occurred.
IGBT Overload Alarm Note:
It may be disabled by setting P0350 = 0 or 2.
F048 An IGBT overload fault occurred.
IGBT Overload Fault Note:
It may be disabled by setting P0350 = 0 or 2.
A050 A high temperature alarm was detected by the NTC
IGBT High temperature sensors located on the IGBTs.
Temperature Note:
It may be disabled by setting P0353 = 2 or 3.
F051 A high temperature fault was detected by the NTC
IGBT temperature sensors located on the IGBTs.
Overtemperature
F065 Feedback obtained via encoder does not match the
Encoder Signal Fault commanded speed.
(SW) The fault can be disabled via parameter P0358.
F066 Feedback obtained via encoder does not match the
Encoder Signal Fault commanded speed.
(SW) The fault can be disabled via parameter P0358.
F067 Fault related to the phase relation of the encoder
Incorrect Encoder/ signals, if P0202 = 4 and P0408 = 0, 2, 3 or 4.
Motor Wiring Note:
- It is not possible to reset this fault (when P0408>1).
- In this case, turn off the power supply, solve the
problem, and then turn it on again.
- When P0408 = 0, it is possible to reset this fault.
This fault could be disabled by means of parameter
P0358.
In this case it is possible to reset this fault.
F070 Overcurrent or short-circuit detected at the output, in
Overcurrent/ the DC Link, or at the braking resistor.
Short-circuit Note:
It is available only for models of frame sizes A, B,
and C.
F071 The inverter output current was too high for too long.
Output Overcurrent
F072 The motor overload protection operated.
Motor Overload Note:
It may be disabled by setting P0348 = 0 or 3.
F074 A ground fault occured either in the cable between
Ground Fault the inverter and the motor or in the motor itself.
Note:
It may be disabled by setting P0343 = 0.
F076 Fault of motor current imbalance.
Motor Current Note:
Imbalance It may be disabled by setting P0342 = 0.
Description
Troubleshooting and Maintenance
Possible Causes
Short-circuit between motor phases W and U or W and V.
Short-circuit between the connection cables of the dynamic
braking resistor.
Settings of P0156, P0157, and P0158 are too low for the
used motor.
Motor shaft load is excessive.
Inverter output current is too high.
Inverter output current is too high.
Surrounding air temperature is too high (>50 °C (122 °F))
and output current is too high.
Blocked or defective fan.
Very dirty heatsink.
Wiring between encoder and encoder interface accessory
interrupted.
Encoder is defective.
Encoder coupling to the motor is broken.
Inverter operating in current limit (In case the application
needs to run in such condition, this fault should be disabled
via parameter P0358).
Wiring between encoder and encoder interface accessory
interrupted.
Encoder is defective.
Encoder coupling to the motor is broken.
Inverter operating in current limit (In case the application
needs to run in such condition, this fault should bedisabled
via parameter P0358).
Output motor cables U, V, W are inverted.
Encoder channels A and B are inverted.
Encoder was not properly mounted.
Motor with locked rotor or dragging at the start.
Short-circuit between two motor phases.
Short-circuit between the connection cables of the dynamic
braking resistor.
IGBT modules are shorted.
Excessive load inertia or acceleration time too short.
Settings of P0135, P0169 and P0170 are too high.
Settings of P0156, P0157, and P0158 are too low for the
used motor.
Motor shaft load is excessive.
Shorted wiring in one or more of the output phases.
Motor cable capacitance is too large, resulting in current
peaks at the output. (1)
Loose connection or broken wiring between the motor and
inverter connection.
Vector control with wrong orientation.
Vector control with encoder, encoder wiring or encoder motor
connection inverted.
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CFW-11 | 6-3