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Mitsubishi Electric FR-E520 Instruction Manual Page 200

Transistorized inverter.
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Operation Panel Indication
Name
Description
Check point
Corrective action
Operation Panel Indication
Name
Description
Check point
Corrective action
Note: 4. Only when the communication option is fitted to the three-phase 400V power
input model.
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 a
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. (Note 4)
Stops the inverter output if a setting error or connection
(connector) fault occurs during use of in-board option.
Check that the communication cable is not open.
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.
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 operation panel or FR-PU04.
• Check the Pr. 75 setting.
Fit the operation panel and FR-PU04 securely.
190
PROTECTIVE FUNCTIONS
FR-PU04
Stll Prev STP
FR-PU04 Option Fault
functional
FR-PU04 Corrupt Memory
FR-PU04 PU Leave Out
fault (e.g.
2
PROM

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