Equipment Configuration - Mitsubishi Electric MELSERVO-J5 TM-RG2M Series User Manual

2.1

Equipment configuration

The following shows the configuration of a direct drive motor. When using the direct drive motor, note the following.
Minimum oscillation angle
For a direct drive motor that performs a rotating oscillating motion within 70 °, rotate the motor more than 90 ° at least once a
day to keep the bearings lubricated.
Z-phase position
Z-phase pulse is on (Z-phase mark passing) when the Z-phase mark on the rotor end of the direct drive motor is in the
connector area. Keep the Z-phase position visible even after the direct drive motor is installed to a machine.
Z-phase mark
Z-phase pulse is on
(Z-phase mark passing)
when the Z-phase mark
on the rotor end of the
direct drive motor is in
the connector area.
Precautions for Z-phase mark passing
After power on, the Z-phase mark of the direct drive motor must pass the connector area once. In a system which prevents
the direct drive motor from making a full rotation or more, install the direct drive motor in a position where the Z-phase mark
can pass over the connector area.
In order to turn the Z-phase pulse, Z phase mark needs to be rotated ±15° or more with respect to the center of the connector
mounting part.
For vertical axis (lift)
For the system where the unbalanced torque occurs, such as a vertical axis system (lift), use the direct drive motor in the
absolute position detection system. In the absolute position detection system, the absolute position is established when the Z-
phase mark passes the connector area once. Therefore, at system startup, make the Z-phase mark pass over the connector
area, and switch the servo amplifier's power supply from off to on.
If the direct drive motor can be rotated manually, make the Z-phase mark pass over the connector area while only the servo
amplifier's control circuit power supply is on. After that, switch the servo amplifier's power supply from off to on.
If the direct drive motor cannot be rotated manually, detect the magnetic poles while the torque is balanced, then run the direct
drive motor in the test mode to make its Z-phase mark pass over the connector area. After that, switch the servo amplifier's
power supply from off to on. After the Z-phase mark passes over the connector area once, magnetic poles detection is not
required.
2 INSTALLATION
8
2.1 Equipment configuration
Rotor (output shaft)
Connector mounting part
Encoder connector
Power connector