WEG CFW-11 User Manual page 82

Fault/Alarm
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.
F071 Output overcurrent fault.
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.
F077 The dynamic braking resistor overload protection
DB Resistor Overload operated.
F078 Fault related to the PTC temperature sensor installed
Motor 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 The fault can be disabled via switches of the ENC1,
ENC2 board.
F080 Microcontroller watchdog fault.
CPU Watchdog
F082 Fault while copying parameters.
Copy Function Fault
F084 Auto-diagnosis fault.
Auto-diagnosis Fault
A088 Indicates a problem between the keypad and control
Communication Lost board communication.
A090 External alarm via digital input.
External Alarm Note:
It is required to set a digital input to "No external
alarm".
F091 External fault via digital input.
External Fault Note:
It is required to set a digital input to "No external
fault".
Description
Troubleshooting and Maintenance
Possible Causes
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 be disabled
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.
Excessive load inertia or acceleration time too short.
Settings of P0135 or 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
(1)
peaks at the output.
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.
Excessive load inertia or desacceleration time too short.
Motor shaft load is excessive.
Parameter P0154 and P0155 incorrect setting.
Excessive load at the motor shaft.
Excessive duty cycle (too many starts/stops per minute).
Surrounding air temperature too high.
Loose connection or short-circuit (resistance < 100 Ω) in the
wiring connected to the motor termistor.
Motor termistor is not installed.
Blocked motor shaft.
Broken wiring between motor encoder and option kit for
encoder interface.
Defective encoder.
Encoder accessory defective or not well installed on the pro-
duct, and control configured for vector with encoder.
Electrical noise.
Communication problem with the HMI.
Please contact WEG.
Loose keypad cable connection.
Electrical noise in the installation.
Wiring was not connected to the digital input (DI1 to DI8) set
to "No external alarm".
Wiring was not connected to the digital input (DI1 to DI8) set
to "No external fault".
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CFW-11 | 6-3