Mitsubishi Electric FR-F800 Series Instruction Manual page 104

NOTE
• Before wiring or inspection for a PM motor, confirm that the PM motor is stopped. In an application, such as fan and blower,
where the motor is driven by the load, a low-voltage manual contactor must be connected at the inverter's output side, and
wiring and inspection must be performed while the contactor is open. Otherwise you may get an electric shock.
• Do not open or close the contactor while the inverter is running (outputting).
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3. PRECAUTIONS FOR USE OF THE INVERTER
3.4 Power shutdown and magnetic contactor (MC)
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