Mitsubishi Electric TM-RFM, Инструкция по эксплуатации

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2. INSTALLATION
2 - 2
2.1 Equipment configuration
The following shows the configuration of a direct drive motor. When using the direct drive motor, note the
following.
(1) Minimum oscillation angle
If the direct drive motor rotates repeatedly by a small angle (by 70

or less), make the direct drive motor
rotate by 90

or more at least once a day in order to keep the bearing lubricated.
(2) Z-phase position
A Z-phase pulse turns on (Z-phase mark passing) when the Z-phase mark on the rotor end of the direct
drive motor passes over the connector area. Keep the Z-phase position visible even after the direct drive
motor is installed to a machine.
Rotor (output shaft)
Encoder connector
Power supply connector
A Z-phase pulse turns
on when the Z-phase
mark passes over
the connector area.
Z-phase mark
(3) 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, install the direct drive motor in a
position where the Z-phase mark can pass over the connector area.
(4) 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 pole detection is not required.