WEG CFW300 V1.3X, Programming Manual

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Quick Reference of Parameters, Alarms and Faults
CFW300 | 0-17
Fault / Alarm Description Possible Causes
F078
Motor Overtemperature
Overtemperature fault measured on the
motor temperature sensor (Triple PTC)
via analog input AIx
„
Overload on the motor shaft.
„
Load cycle is too high (high number of starts and stops per
minute).
„
High ambient temperature around the motor.
„
Poor contact or short-circuit (3k9 < R
PTC
< 0k1).
„
Motor thermistor not installed.
„
Motor shaft is stuck.
F079
Encoder Signal Fault
Fault of encoder signals absent.
„
Wiring between encoder and interface accessory to encoder
broken.
„
Encoder defective.
F080
CPU Fault (Watchdog)
Fault related to the supervision
algorithm of the inverter main CPU.
„
Electric noise.
„
Inverter firmware fault.
F081
End of User’s Memory
Fault of end of memory to save user’s
parameter table.
„
Attempt to save (P204 = 9) more than 32 parameters (with values
different from the factory default) on the User parameter table.
F082
Fault in Data
Transfer (MMF)
Fault in data transfer using MMF
accessory.
„
Attempt to download data from the flash memory module to the
inverter with the inverter energized.
„
Attempt to download a SoftPLC application incompatible with
the destination inverter.
„
Problems saving data downloaded to the inverter.
F084
Auto-diagnosis Fault
Fault related to the automatic
identification algorithm of the inverter
hardware.
„
Poor contact in the connection between the main control and
the power pack.
„
Hardware not compatible with the firmware version.
„
Defect on the internal circuits of the inverter.
F091
External Fault
External fault via DIx (“no external
fault” in P263 to P270).
„
Wiring on DI1 to DI8 inputs are open or have poor contact.
F228
Timeout in Receipt of
Telegrams
Indicates fault in the serial
communication. It indicates the
equipment stopped receiving valid serial
telegrams for a period longer than the
setting in P314.
„
Check network installation, broken cable or fault/poor contact
on the connections with the network, grounding.
„
Ensure the master always sends telegrams to the equipment in
a time shorter than the setting in P314.
„
Disable this function in P314.
F233
No Power Supply on
the CAN Interface
It indicates that the CAN interface has no
power supply between pins 25 and 29 of
the connector.
„
Measure if there is voltage within the allowed range between
pins 25 and 29 of the CAN interface connector.
„
Check if the power supply cables are not misconnected or
inverted.
„
Check for contact problems on the cable or connector of the
CAN interface.
F234
Bus Off
Buss off error detected on the CAN
interface.
„
Check for short circuit on the CAN circuit transmission cable.
„
Check if the cables are not misconnected or inverted.
„
Check if all the network devices use the same baud rate.
„
Check if the termination resistors with the right specification
were installed only at the end of the main bus.
„
Check if the CAN network was properly installed.
F235
Node Guarding/
Heartbeat
CANopen communication error control
detected communication error using the
guarding mechanism.
„
Check the times set on the master and on the slave for message
exchange. In order to prevent problems due to transmission
delays and time counting, it is recommended that the values
set for error detection by the slave be multiples of the times set
for message exchange on the master.
„
Check if the master is sending the guarding telegrams in the
time set.
„
Check problems in the communication that may cause missing
telegrams or transmission delays.
F236
Idle Master
Fault indicates that the DeviceNet
network master is in Idle mode.
„
Set the switch that controls the master operation for Run
or the corresponding bit on the configuration word of the
master software. If further information is needed, refer to the
documentation of the master used.
F237
DeviceNet Connection
Timeout
Fault that indicates that one or more
DeviceNet connections timed out.
„
Check the network master status.
„
Check network installation, broken cable or fault/poor contact
on the connections with the network.
F238
Profibus DP Interface in
Clear Moder
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).
F239
Offline Profibus DP
Interface
It indicates an interruption in the
communication between the Profibus DP
network master and the inverter. The
Profibus DP communication interface
went into offline status.
„
Check if the network master is correctly configured and operating
properly.
„
Check for short-circuit or poor contact on the communication
cables.
„
Check if the cables are not misconnected or inverted.
„
Check if the termination resistors with the right value were
installed only at the end of the main bus.
„
Check the network installation in general - cabling, grounding.