Mitsubishi Electric CNC Specifications And Instruction Manual page 75

Direct Drive Motor Specifications and Instruction Manual
6 Assembly and Installation
(3) For Z-phase signal detection
After turning the encoder power ON, Z-phase signal is required to be detected by the main head (Z-phase signal
position mark is required to pass the main head). For the device configuration which the magnetic drum cannot
drive more than one rotation, install the encoder so that Z-phase can pass the main head in the shaft stroke.
(4) For the rotation direction of the encoder
Seeing an encoder from the upper surface as shown below, when the magnetic drum rotates clockwise is the
forward run. Confirm the rotation direction of the encoder and motor by reference to each motor specifications.
(5) For MBA405W (absolute encoder)
The initial setup operation is required after the operation is enabled for NC system to connect MBA405W to the
servo drive unit. Refer to "7.3 Initial setup for the direct-drive motor system when using MBA405W" for details.
The initial setup is required only for the first time after installing the encoder to the machine.
IB-1501068-C
Main head
Z-phase signal position mark
Forward run
Magnetic drum
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