Mitsubishi Electric FR-E 500 Instruction Manual page 183

Operation Panel Indication
Name
Description
Check point
Corrective action
Note 4: During NET mode communication, alarm "E. OPT" indicates the "E. PUE"
error. Refer to "E. PUE".
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
Operation Panel Indication
Name
Description
Check point
Corrective action
E.OPT
Option alarm (Note 4)
Stops the inverter output if a functional fault (e.g.
communication error of the communication option) occurs in
the communication option.
Stops the inverter output if the inverter station is
disconnected from the system in the NET mode.
• Check that the communication cable is not open.
• Check that the PU connector is plugged securely.
• Please contact your sales representative.
• Securely plug the PU connector.
E. PE
Parameter storage device alarm
A fault occurred in parameters stored (example: E
Check for too many number of parameter write times.
Please contact your sales representative.
E. PUE
Parameter unit disconnection
This function stops the inverter output if communication
between the inverter and PU is suspended, e.g. the PU is
disconnected, when "2", "3", "16" or "17" was set in Pr. 75.
This function stops the inverter output if the number of
successive communication errors is greater than the number
of permissible retries when the Pr. 121 value is other than
"9999" for RS-485 communication from the PU connector.
• Check for loose fitting of the control panel (FR-PA02-
FR-PU04.
• Check the Pr. 75 setting.
Fit the control panel (FR-PA02-
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.
167
PROTECTIVE FUNCTIONS
FR-PU04 Option Fault
FR-PU04 Corrupt Memry
FR-PU04
PU Leave Out
) and FR-PU04 securely.
02
FR-PU04 Retry No Over
FR-PU04 CPU Fault

2
PROM fault).
) or
02