Instruction manual

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5
PROTECTIVE FUNCTIONS
Note:4. Only when the communication option is fitted to the three-phase 400V power
input model.
Operation Panel Indication E. RET FR-PU04 Retry No Over
Name Retry count exceeded
Description
If operation cannot be resumed properly within the number of
retries set, this function stops the inverter output.
Check point Find the cause of alarm occurrence.
Corrective action Eliminate the cause of the error preceding this error indication.
Operation Panel Indication E. CPU FR-PU04 CPU Fault
Name CPU error
Description
If the arithmetic operation of the built-in CPU does not end
within a predetermined period, the inverter self-determines it
as an alarm and stops the output.
Check point ———
Corrective action Please contact your sales representative.
Operation Panel Indication E. 3 FR-PU04 Fault 3
Name Option fault
Description
Also stops the inverter output if the dedicated option used in
the inverter results in setting error or connection (connector)
fault. (Note 4)
Check point
• Check that the function setting and operation of the option
are correct.
• Check that the communication option is plugged in the
connector securely.
• Check for devices producing excess electrical noises around
the inverter.
Corrective action
• Connect the communication option securely.
• Take measures against noises if there are devices producing
excess electrical noises around the inverter.
• Contact your sales representative.
Operation Panel Indication
E. 6
FR-PU04
Fault 6
E. 7 Fault 7
Name CPU error
Description
This function stops the inverter output if a communication error
occurs in the built-in CPU. (400V class only)
Check point
Check for devices producing excess electrical noises around
the inverter.
Corrective action
• Take measures against noises if there are devices producing
excess electrical noises around the inverter.
• Please contact your sales representative.