Magnetic Pole Detection - Mitsubishi Electric MELSERVO-J4 Series Instruction Manual

*1 Use MR Configurator2.
*2 In the absolute position detection system, be sure to turn on the Z-phase pulse of the direct drive motor while the servo amplifier power
is on, and then cycle the power of the servo amplifier. Cycling the power confirms the absolute position. Without this operation, the
absolute position will not be regained properly, and a warning occurs at the controller.
*3 If the Z-phase pulse of the direct drive motor can be turned on manually, the Z-phase pulse does not have to be turned on by the
magnetic pole detection or the JOG operation. To turn on the Z-phase pulse manually, turn on the control circuit power supply (L11/L21)
and turn off the main circuit power supply (L1/L2/L3). Ensure the safety at this time. Perform this operation by considering the safety.

Magnetic pole detection

• 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 circuit power supply of the servo
amplifier. Perform this operation by considering the safety.
• When performing a magnetic pole detection without LSP (Forward rotation stroke end) and LSN (Reverse
rotation stroke end), set [Pr. PL08 Linear servo motor/DD motor function selection 3] to "_ 1 _ _" to disable
LSP and LSN.
• Set [Pr. PE47 Torque offset] to "0 (initial value)" before executing the magnetic pole detection.
• For the magnetic pole detection of vertical axis with direct drive motors, refer to section 2.1 of "Direct Drive
Motor Instruction Manual".
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.
15 USING A DIRECT DRIVE MOTOR
15.3 Operation and functions
15
499