WEG CFW-11 User Manual page 89

Troubleshooting and Maintenance
Fault/Alarm
F077
DB Resistor Overload
F078
Motor
Overtemperature
F079
Encoder Signal Fault
F080
CPU Watchdog
F082
Copy Function Fault
F084
Auto-diagnosis Fault
A088
Communication Lost
A090
External Alarm
F091
External Fault
F099
Invalid Current Offset
A110
High Motor
Temperature
A128
Timeout for Serial
Communication
6
A129
Anybus is Offline
A130
Anybus Access Error
A133
CAN Not Powered
A134
Bus Off
A135
CANopen
Communication Error
A136
Idle Master
A137
DNet Connection
Timeout
6-4 | CFW-11
Description
The dynamic braking resistor overload protection
operated.
Fault related to the PTC temperature sensor installed
in the motor.
Note:
- It may be disabled by setting P0351 = 0 or 3.
- It is required to set the analog input/output to the
PTC function.
Lack of encoder signals.
The fault can be disabled via switches of the ENC1,
ENC2 board.
Microcontroller watchdog fault.
Fault while copying parameters.
Auto-diagnosis fault.
Indicates a problem between the keypad and control
board communication.
External alarm via digital input.
Note:
It is required to set a digital input to "No external
alarm".
External fault via digital input.
Note:
It is required to set a digital input to "No external
fault".
Current measurement circuit is measuring a wrong
value for null current.
Alarm related to the PTC temperature sensor installed
in the motor.
Note:
- It may be disabled by setting P0351 = 0 or 2.
- It is required to set the analog input/output to the
PTC function.
Indicates that the inverter stopped receiving valid
messages within a certain time interval.
Note:
It may be disabled by setting P0314 = 0.0 s.
Alarm that indicates interruption of the Anybus-CC
communication.
Alarm that indicates an access error to the
Anybus-CC communication module.
Alarm indicating that the power supply was not
connected to the CAN controller.
Inverter CAN interface has entered into the bus-off
state.
Alarm that indicates a communication error.
Network master has entered into the idle state.
I/O connection timeout - DeviceNet communication
alarm.
Possible Causes
Excessive load inertia or desacceleration time too short.
Motor shaft load is excessive.
Wrong setttings for parameters P0154 and P0155.
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
product, and control configured for vector with encoder.
Electrical noise.
Communication problem with the HMI.
Defect in the inverter internal circuitry.
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".
Defect in the inverter internal circuitry.
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.
Check the wiring and grounding installation.
Make sure the inverter has sent a new message within the
time interval set at P0314.
PLC entered into the idle state.
Programming error. Master and slave set with a different
number of I/O words.
Communication with master has been lost (broken cable,
unplugged connector, etc.).
Defective, unrecognized, or improperly installed Anybus-CC
module.
Conflict with a WEG option board.
Broken or loose cable.
Power supply is off.
Incorrect communication baud-rate.
Two nodes configured with the same address in the network.
Wrong cable connection (inverted signals).
Communication problems.
Wrong master configuration/settings.
Incorrect configuration of the communication objects.
PLC in IDLE mode.
Bit of the PLC command register set to zero (0).
One or more allocated I/O connections have entered into
the timeout state.