WEG CFW-11 Series User Manual page 68

Fault/Alarm
A050: The IGBT NTC temperature sensors detected a
U Phase IGBT High high temperature alarm.
Temperature Note:
It may be disabled by setting P0353=2 or 3.
F051: The IGBT NTC temperature sensors detected
U Phase IGBT an overtemperature fault.
Overtemperature
A053: The IGBT NTC temperature sensors detected a
V Phase IGBT High high temperature alarm.
Temperature Note:
It may be disabled by setting P0353=2 or 3.
F054: The IGBT NTC temperature sensors detected
V Phase IGBT an overtemperature fault.
Overtemperature
A056: The IGBT NTC temperature sensors detected a
W Phase IGBT High high temperature alarm.
Temperature Note:
It may be disabled by setting P0353=2 or 3.
F057: The IGBT NTC temperature sensors detected
W Phase IGBT an overtemperature fault.
Overtemperature
F067: Fault related to the phase relation of the
Inverted Encoder/Motor encoder signals, if P0202=4 and P0408=2,
Wiring 3 or 4.
Note:
- This fault can only happen during the self-
tuning routine.
- It is not possible to reset this fault.
- In this case, turn off the power supply, solve
the problem, and then turn it on again.
F071: Output overcurrent fault.
Output Overcurrent
F072: The motor overload protection tripped.
Motor Overload Note:
It may be disabled by setting P0348=0 or 3.
F074: A ground fault occurred, either in the cable
Ground Fault between 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.
F077: The dynamic braking resistor overload
DB Resistor Overload protection tripped.
F078: Fault related to the PTC temperature sensor
Motor installed in the motor.
Overtemperature Note:
- It may be disabled by setting P0351=0 or 3.
- It is necessary to set an analog input / output
to the PTC function.
F079: Lack of encoder signals.
Encoder Signal Fault
F080: Microcontroller watchdog fault.
CPU Watchdog
F082: Fault while copying parameters.
Copy Function Fault
F084: Auto-diagnosis fault.
Auto-diagnosis Fault
Table 6.1 (cont.) - Faults, alarms and possible causes
Description
Troubleshooting and Maintenance
Possible Causes
High inverter surrounding air temperature (> 50 °C (122 °F))
and high output current.
Blocked or defective fan.
Very dirty heatsink.
Output motor cables U, V, W are inverted.
Encoder channels A and B are inverted.
Encoder was not properly mounted.
Excessive load inertia or acceleration time too short.
Settings of P0135 or P0169, P0170, P0171, and P0172 are
too high.
Settings of P0156, P0157, and P0158 are too low for the used
motor.
Excessive load at the motor shaft.
Short-circuit to the ground at one or more of the output phases.
Motor cable capacitance is too large, resulting in current peaks
at the output.
(5)
Loose connection or interrupted wiring between motor and
inverter.
Vector control lost orientation.
Vector control with inverted encoder wiring or inverted motor
connection.
Excessive load inertia or deceleration time too short.
Excessive load at the motor shaft.
Parameter P0154 and P0155 incorrect setting.
Excessive load at the motor shaft.
Too heavy duty cycle (too many starts / stops per minute).
Too high motor surrounding air temperature.
Loose connection or short-circuit (resistance < 60 Ω) in the
wiring connected to the motor thermistor.
Motor thermistor is not installed.
Blocked motor shaft.
Broken wires between the motor encoder and the option and the
encoder interface board;
Defective encoder.
Electrical noise.
An attempt to copy the keypad parameters to an inverter with an
incompatible firmware version.
Internal inverter circuitry defect.
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