Mitsubishi Electric MR-J4 B Series Instruction Manual page 323

15. USING A DIRECT DRIVE MOTOR
15.3.2 Magnetic pole detection
Before the positioning operation of the direct drive motor, make sure to perform the magnetic pole detection.
Before starting up the equipment, perform the test operation (positioning operation) of MR Configurator2.
POINT
The magnetic pole detection is not required for the configured absolute position
detection system where the Z-phase pulse of the direct drive motor can be
turned on manually.
For this operation, always connect the direct drive motor encoder and the servo
amplifier and turn on the control power supply of the servo amplifier. Perform
this operation by considering the safety.
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