WEG CFW700, Programming And Troubleshooting Manual

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Quick Parameter Reference, Faults and Alarms
0-18 | CFW700
Fault/Alarm Description Possible Causes
F078:
Motor Overtemperature Fault related to the PTC temperature sensor
installed in the motor.
Note:
- It can be disabled by setting P0351 = 0 or 3.
- An analog input and an analog output must be
set for the PTC function.
„
Excessive load at the motor shaft.
„
Severe duty cycle (too many starts / stops per minute).
„
Too high surrounding air temperature.
„
Loose connection or short-circuit (resistance < 100 Ω) in
the wiring connected to the motor thermistors.
„
Not installed motor thermistors.
„
Blocked motor shaft.
F079:
Encoder Signal Fault Incorrect encoder signals.
„
Broken wiring between the motor encoder and the
encoder interface accessory.
„
Defective encoder.
F080:
CPU Watchdog Microcontroller watchdog fault.
„
Electrical noise.
F084:
Auto-Diagnosis Fault Auto-Diagnosis Fault.
„
Defect in the inverter internal circuitry.
„
Firmware incompatible with an accessory.
A090:
External Alarm External alarm monitored through a digital input.
Note:
It is necessary to program a digital input for “No
external alarm”.
„
A digital input (DI1 to DI8) programmed for “No external
alarm” is open.
F091:
External Fault External fault monitored through a digital input.
Note:
It is necessary to program a digital input for “No
external fault”.
„
A digital input (DI1 to DI8) programmed for “No external
fault” is open.
A098:
Activate General Enable General enable signal is missing during the
self-tuning.
„
The digital input programmed for “General Enable” is
open.
F099:
Invalid Current Offset The current measurement circuit is presenting an
abnormal value for null current.
„
Defect in the inverter internal circuitry.
A110:
High Motor Temperature Fault detected through PTC type temperature
sensors installed in the motor.
Note:
- It can be disabled by setting P0351 = 0 or 2.
- An analog input and an analog output must be
set for the PTC function.
„
Excessive load at the motor shaft.
„
Severe duty cycle (too many starts / stops per minute).
„
Too high surrounding air temperature.
„
Not installed motor thermistors.
„
Blocked motor shaft.
A128:
Serial Communication
Timeout It indicates that the inverter stopped receiving
valid telegrams during a certain period.
Note:
It can be disabled by setting P0314 = 0.0 s
„
Check the wiring and the ground installation.
„
Make sure that the inverter has sent a new message
within the time interval set at P0314.
A133:
CAN Interface without
Power Supply It is the alarm indicating that the power supply is
missing at the CAN controller.
„
Broken or disconnected cable.
„
The power supply is turned off.
A134:
Bus Off The inverter CAN interface has entered the
buss off state.
„
Incorrect communication baud rate.
„
Two network slaves with the same address.
„
Wrong cable connection (inverted signals).
A135:
CANopen
Communication Error It indicates a communication error alarm.
„
Communication problems.
„
Wrong master configuration/settings.
„
Incorrect configuration of the communication objects.
A136:
Idle Master The network master has entered the idle state.
„
PLC in IDLE mode.
„
PLC command register bit set to zero (0).
A137:
DeviceNet Connection
Timeout It is the alarm indicating timeout of the DeviceNet
I/O connections.
„
One or more allocated I/O connections have entered 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 the
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.