PROTECTIVE FUNCTIONS
167
Operation Panel Indication
E.OPT
FR-PU04
Option Fault
Name
Option alarm (Note 4)
Description
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 point
•
Check that the communication cable is not open.
•
Check that the PU connector is plugged securely.
Corrective action
•
Please contact your sales representative.
•
Securely plug the PU connector.
Note 4: During NET mode communication, alarm "E. OPT" indicates the "E. PUE"
error. Refer to "E. PUE".
Operation Panel Indication
E. PE
FR-PU04
Corrupt Memry
Name
Parameter storage device alarm
Description
A fault occurred in parameters stored (example: E
2
PROM fault).
Check point
Check for too many number of parameter write times.
Corrective action
Please contact your sales representative.
Operation Panel Indication
E. PUE
FR-PU04
PU Leave Out
Name
Parameter unit disconnection
Description
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 point
•
Check for loose fitting of the control panel (FR-PA02-
02
) or
FR-PU04.
•
Check the Pr. 75 setting.
Corrective action
Fit the control panel (FR-PA02-
02
) and FR-PU04 securely.
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.