Troubleshooting By The Demonstration Machine; Stall Prevention (Overcurrent) (Ol Display) [Demonstration] - Mitsubishi Electric FATEC FR-A800 Manual

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BREAKDOWN MAINTENANCE
5.2

Troubleshooting by the demonstration machine

Perform troubleshooting using the demonstration machine.
Check the symptom and take measures following the described procedures for operation.
5.2.1

Stall prevention (overcurrent) (OL display) [Demonstration]

Change H500 (Pr.22) (Stall prevention operation level) from the initial value "150%" to "45%", and
turn ON STF and high speed RH. Turn the potentiometer of the load setting to the right as far as it
goes after 60 Hz is displayed. Run the inverter with the load ON at load torque 150%. Confirm that
the OL display appears and the motor stops.
(1) Corrective action
1) Use FR Configurator2 to check the output current value.
2) Check that the stall prevention (overcurrent) (OL display) occurs when the value is higher than
the current value that is set in H500 (P.22).
(Check that output current is equal to the rated current (5A) × stall prevention operation level
that is set (%).)
Task 1 Change H500 (Pr.22) (Stall prevention operation level) and obtain the threshold for OL
display.
Task 2 Adjust the potentiometer of the load setting, and obtain the setting value that triggers the
stall prevention (overcurrent) (OL display).
5.2 Troubleshooting by the demonstration machine
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