WEG CFW-11 User Manual - page 83
Troubleshooting and Maintenance
6
6-4 | CFW-11
Fault/Alarm
Description
Possible Causes
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 required to set the analog input/output to the
PTC function.
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
wiring connected to the motor termistor.
Motor termistor is not installed.
Blocked motor shaft.
A128
Timeout for Serial
Communication
Indicates that the inverter stopped receiving valid
messages 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 message within the
time interval set at P0314.
A129
Anybus is Offline
Alarm that indicates interruption of the Anybus-CC
communication.
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.).
A130
Anybus Access Error
Alarm that indicates an access error to the
Anybus-CC communication module.
Defective, unrecognized, or improperly 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 into the bus-off
state.
Incorrect communication 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 into the idle state.
PLC in IDLE mode.
Bit of the PLC command register set to zero (0).
A137
DNet Connection
Timeout
I/O connection timeout - DeviceNet communication
alarm.
One or more allocated I/O connections have entered into the
timeout state.
A138
(2)
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
(2)
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
(2)
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 fault (MMF-03).
Defective FLASH memory module.
FLASH memory module is not connected properly.
A152
Internal Air High
Temperature
Alarm indicating that the internal air temperature is
too high.
Note:
It may be disabled by setting P0353 = 1 or 3.
Surrounding air temperature too high (> 45 °C (113 °F)) and
excessive output current.
Defective internal fan.
High temperature (> 45 ºC (113 °F)) inside the cabinet.
F153
Internal Air
Overtemperature
Internal air overtemperature fault.
F156
Undertemperature
Undertemperature fault, measured at the IGBTs
temperature sensors.
Surrounding air temperature ≤ -30 °C (-22 °F) .
F160
Safety Stop Relays
Safety Stop relay fault.
It was only applied +24 Vdc to one STO input (STO1 or
STO2).
One of the relays is defective.