WEG CFW100 Referencia Rápida página 24

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Quick Reference of Parameters, Alarms and Faults
Fault / Alarm
F080
CPU Fault
(Watchdog)
F081
Fault on the Save
User function
F082
Fault in the Copy
Function (MMF)
F084
Auto-diagnosis
Fault
F091
External Fault
F228
Timeout in receipt
of telegrams
F233
No power supply
on the CAN
interface
F234
Bus Off
24 | CFW100
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Description
Fault related to the supervision
algorithm of the inverter main CPU.
Fault in the attempt to save the User
parameter table.
Fault in the copy of parameters.
Fault related to the automatic
identification algorithm of the inverter
hardware.
External fault via DIx ("No External
Fault" in P26x).
Indicates fault in the serial
communication. It indicates the
equipment stopped receiving valid serial
telegrams for a period longer than the
setting in P314.
It indicates that the CAN interface has
no power supply between pins 1 and 5
of the connector.
Buss off error detected on the CAN
interface.
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Possible Causes
„
Electric noise.
„ Inverter firmware fault.
„
Attempt to save (P204 = 9) more than 32
parameters (with values different from the
factory default) on the User parameter table.
„
The function Saves User is blocked.
„ Attempt to copy the parameters from the Flash
Memory Module to the inverter with different
software versions.
„ Poor contact in the connection between the
main control anthe power pack.
„
Hardware not compatible with the firmware
version.
„ Defect on the internal circuits of the inverter.
„
Wiring on DI1 to DI4 inputs are open or have
poor contact.
„
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.
„
Measure if there is voltage within the allowed
range between pins 1 and 5 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.
„ 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.
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