Mitsubishi Electric FR-E500 Instruction Manual page 183

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. OLT
Stall prevention
The running frequency has fallen to 0 by stall prevention
activated. (OL while stall prevention is being activated.)
Check the motor for use under overload.
Reduce the load weight.
E. OPT
Option alarm
Stops the inverter output if the dedicated option used in the
inverter results in setting error or connection (connector)
fault.
When the high power factor converter connection is selected,
this alarm appears if an AC power supply is connected to
R (L ), S (L ), T (L ).
1 2 3
Check that the plug-in option connector is plugged securely.
Connect the plug-in option securely.
Please contact your sales representative.
E. PE
Parameter storage device alarm
A fault occurred in parameters stored (example: E
fault).
Check for too many number of parameter write times.
Change the inverter.
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 "9999" for
RS-485 communication from the PU connector.
• Check for loose fitting of the operation panel or FR-PU04.
• Check the Pr. 75 setting.
Fit the operation panel and FR-PU04 securely.
167
PROTECTIVE FUNCTIONS
FR-PU04
Stll Prev STP
FR-PU04 Option Fault
FR-PU04 Corrupt Memory
FR-PU04
PU Leave Out
2
PROM