Mitsubishi Electric FR-E520 Instruction Manual page 201

Operation Panel Indication
Name
Description
Check point
Corrective action
Operation Panel Indication
Name
Description
Check point
Corrective action
Operation Panel Indication
Name
Description
Check point
Corrective action
Note: 5. Only when the communication option is fitted to the three-phase 400V power
input model.
Operation Panel Indication
Name
Description
Check point
Corrective action
E. RET
Retry count exceeded
If operation cannot be resumed properly within the number of
retries set, this function stops the inverter output.
Find the cause of alarm occurrence.
Eliminate the cause of the error preceding this error indication.
E. CPU
CPU error
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.
Please contact your sales representative.
E. 3
Option fault
Also stops the inverter output if the dedicated option used in
the inverter results in setting error or connection (connector)
fault. (Note 5)
• 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.
• Connect the communication option securely.
• Take measures against noises if there are devices producing
excess electrical noises around the inverter.
• Contact your sales representative.
E. 6
E. 7
CPU error
This function stops the inverter output if a communication error
occurs in the built-in CPU. (400V class only)
Check for devices producing excess electrical noises around
the inverter.
• Take measures against noises if there are devices producing
excess electrical noises around the inverter.
• Please contact your sales representative.
191
PROTECTIVE FUNCTIONS
FR-PU04 Retry No Over
FR-PU04 CPU Fault
———
FR-PU04 Fault 3
Fault 6
FR-PU04
Fault 7
5