Mitsumi electronic FR-F520-0.75K, 55K Option slot alarm 1 to, To OP3, Corrupt Memry

Operation Panel

Indication

Name

Description

Check point

Corrective action

Operation Panel

Indication

Name

Description

Check point

Corrective action

PROTECTIVE FUNCTIONS

E.OLT

FR-PU04

Stll Prev STP (OL shown during stall

prevention operation)

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

FR-PU04

Option Fault

Option alarm

Stops the inverter output if two or more communication options are fitted. (Note 4)

When the high power factor converter is connected, this alarm appears if an AC power supply is accidentally connected to R, S, T <L1, L2, L3>.

•Check that the number of communication options fitted is one.

• When the high power factor converter is connected, check for an AC power supply connected to the R, S, T <L1, L2, L3> terminals.

•Reduce the communication options used to one.

•Check the parameter (Pr. 30) setting and wiring.

• When the high power factor converter is connected, connecting an AC power supply to the R, S, T <L1, L2, L3> terminals may have damaged the inverter. Contact your sales representative.

Note 4: The FR-A5NR (relay output/computer link) allows you to fit one more communication option. In this case, only the relay output function may be used and the computer link function is unusable.

Operation Panel	E.OP1	FR-PU04	Option slot alarm 1 to 3
Indication	to OP3
Name	Option slot alarm
	Stops the inverter output if a functional alarm occurs in the plug-in option loaded
Description	in the corresponding slot (e.g. communication alarm of the communication
	option, contact fault of the plug-in option other than a communication option)

•	Check for a wrong option function setting and operation.
•	Check that the plug-in option is connected to the connector securely.
Check point	(1 to 3 indicate the option slot numbers.)
•	Check the communication cable for wire breakage.
•	Check that the termination resistor is fitted properly.

Corrective action	•	Confirm the option function setting, etc.
	•	Connect the plug-in option securely.
Operation Panel		E.PE	FR-PU04	Corrupt Memry
Indication
Name	Parameter storage device alarm
Description	Stops the inverter output if a fault occurs in the E2PROM device which stores
	parameter settings.
Check point	Check for too many number of parameter write times.
Corrective action	Change the inverter.

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