Mitsubishi FR-F500 Instruction Manual page 182

Operation Panel
E.PUE
Indication
Name Parameter unit disconnection
This function stops the inverter output if communication between the inverter
and PU is suspended, e.g. the operation panel or PU is disconnected, when "2",
"3", "16" or "17" was set in Pr. 75 "reset selection/disconnected PU detection/PU
stop selection". This function stops the inverter output if the number of
Description
successive communication errors is greater than the permissible number of
retries when the Pr. 121 value is "9999" for RS-485 communication from the PU
connector. This function stops the inverter output if communication is broken for
the time set in Pr. 122.
Check for loose fitting of the DU or PU.
Check point
Check the Pr. 75 setting.
Corrective action Fit the DU and PU securely.
Operation Panel
E.RET
Indication
Name Retry count exceeded
If operation cannot be resumed properly within the number of retries set, this
Description
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
E.CPU
Indication
Name CPU error
If the arithmetic operation of the built-in CPU does not end within a
Description predetermined period, the inverter self-determines it as an alarm and stops the
output.
Check point
Corrective action
Make connection securely.
E. 6
Operation Panel
Indication
E. 7
Name CPU error
This function stops the inverter output if a communication error occurs in the
Description
built-in CPU.
Check point
Check for a loose connector.
Corrective action Contact your sales representative.
PROTECTIVE FUNCTIONS
FR-PU04
FR-PU04
FR-PU04
Fault 6
FR-PU04
Fault 7
168
PU Leave Out
Retry No Over
CPU Fault
5