Mitsubishi Electronics FR-S500 instruction manual Operation mode is not changed properly

PU

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Troubleshooting

3.2.8 Operation mode is not changed properly

If the operation mode does not change correctly, check the following:

1.External input signal ............ Check that the STF or STR signal is off. When it is on, the operation mode cannot be changed.

2.Parameter setting ................ Check the Pr. 79 setting.

When the Pr. 79 "operation mode selection" setting is "0", switching input power on places the inverter in the external operation mode.

Press the to switch to the PU operation

mode.

For other settings (1 to 8), the operation mode is limited accordingly.

(For details of Pr. 79, refer to page 109.)

3.2.9 Operation panel display is not operating

Make sure that terminals PC-SD are not shorted.

Make sure that the connector is fitted securely across terminals P - P1.

3.2.10 Parameter write cannot be performed

Make sure that operation is not being performed (signal STF or STR is not ON).

Check that the SET ( WRITE ) was pressed.

Make sure that you are not attempting to set the parameter outside the setting range.

Make sure that you are not attempting to set the parameter in the external operation mode.

Check Pr. 77 "parameter write disable selection".

3.2.11 Motor produces annoying sound

Check the Pr. 70 "Soft-PWM setting" and Pr. 72 "PWM frequency selection" settings.

Make sure that the deceleration time is not too short.

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