WEG CFW-11 User Manual - page 94
Troubleshooting and Maintenance
6
6-4 | CFW-11
Fault/Alarm
Description
Possible Causes
F084
Auto-diagnosis Fault
Auto-diagnosis fault.
Internal inverter circuitry defect.
A088
Communication Lost
A failure in the communication between the HMI
and the control board.
Loose keypad cable connection.
Electrical noise in the installation.
A090
External Alarm
External alarm via digital input.
Note:
It is necessary to set a digital input for "no external
alarm".
Open wiring at digital inputs (DI1 to DI8) programmed
for "no external alarm".
F091
External Fault
External fault via digital input.
Note:
It is necessary to set a digital input to "no external
fault".
Open wiring at digital inputs (DI1 to DI8) programmed
for "no external fault".
F099
Invalid Current Offset
Current measurement circuit is measuring a wrong
value for null current.
Defect in the inverter internal circuitry.
A110
High Motor
Temperature
Alarm related to the PTC temperature sensor
installed in the motor.
Note:
- It may be disabled by setting P0351 = 0 or 2.
- It is necessary to set an analog input/output to the
PTC function.
Excessive load at the motor shaft.
Too heavy duty cycle (too many starts / stops per minute).
Too high motor surrounding air temperature.
Motor thermistor is not installed.
Blocked motor shaft.
A128
Timeout for Serial
Communication
Indicates that the inverter stopped receiving valid
telegrams within a certain time interval.
Note:
It may be disabled by setting P0314 = 0.0 s.
Check the wiring and grounding installation.
Make sure the inverter has sent a new telegram within the
time interval set at P0314.
A129
Anybus is Offline
Alarm that indicates interruption of the Anybus-CC
communication.
The PLC has entered 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.).
A130
Anybus Access Error
Alarm that indicates an access error to the
Anybus-CC communication module.
Defective, unrecognized, or incorrectly installed Anybus-
CC module.
Conflict with a WEG option board.
A133
CAN Not Powered
Alarm indicating that the power supply was not
connected to the CAN controller.
Broken or loose cable.
Power supply is off.
A134
Bus Off
Inverter CAN interface has entered the bus-off state.
Incorrect baud-rate.
Two nodes configured with the same address in the
network.
Wrong cable connection (inverted signals).
A135
CANopen
Communication Error
Alarm that indicates a communication error.
Communication problems.
Wrong master configuration/settings.
Incorrect configuration of the communication objects.
A136
Idle Master
Network master has entered the idle state.
PLC in IDLE mode.
Bit of the PLC command register set to zero (0).
A137
DNet Connection Timeout
DeviceNet I/O connection timeout alarm.
One or more allocated I/O connections have entered the
timeout state.
A138
(1)
Profibus DP Interface in
Clear Mode
It indicates that the inverter received a command
from the Profibus DP network master to enter the
clear mode.
Verify the network master status, making sure it is in
execution mode (Run).
Refer to the Profibus DP communication manual for more
information.
A139
(1)
Offline Profibus DP
Interface
It indicates an interruption in the communication
between the Profibus DP network master and the
inverter.
Verify whether the network master is correctly configured
and operating normally.
Verify the network installation in a general manner - cable
routing, grounding.
Refer to the Profibus DP communication manual for more
information.
A140
(1)
Profibus DP Module
Access Error
It indicates an error in the access to the Profibus DP
communication module data.
Verify whether the Profibus DP module is correctly fit into
the slot 3.
Refer to the Profibus DP communication manual for more
information.
F150
Motor Overspeed
Overspeed fault.
It is activated when the real speed exceeds the value
of P0134 x (100 % + P0132) for more than 20 ms.
Wrong settings of P0161 and/or P0162.
Problem with the hoist-type load.
F151
FLASH Memory Module
Fault
FLASH memory module (MMF-03) fault.
Defective FLASH memory module.
FLASH memory module is not connected properly.