Mitsubishi Electric MELSERVO-JET MR-JET User Manual page 71

■Method 33 and Method 34 (Homing on index pulse)
The following figure shows the operation of Homing method 34 when the home position shift distance is a positive value. The
homing direction of Homing method 33 is opposite to that of Homing method 34.
• When homing is performed from near the Z-phase, the homing completion position varies. The
recommended start position for homing can be found by rotating the servo motor about a half-turn away
from the homing direction.
ON
Statusword bit 10
Target reached
OFF
ON
Statusword bit 12
Homing attained
OFF
Forward
rotation
Servo motor speed 0 r/min
Reverse
rotation
ON
Z-phase
OFF
ON
Controlword bit 4
Homing operation start
OFF
• When the stroke end is detected
Forward
rotation
Servo motor speed 0 r/min
Homing start position
■Method 35 and Method 37 (Homing on current position)
The following figure shows the operation of Homing method 35 and Homing method 37. Homing can be executed even in the
servo-off status.
Homing cannot be executed in the servo-off status when Motion modules manufactured by Mitsubishi Electric (RD78G(H)/
FX5-SSC-G) are used. For details, refer to each controller manual.
ON
Statusword bit 12
Homing attained
OFF
Forward
rotation
Servo motor speed 0 r/min
Reverse
rotation
ON
Controlword bit 4
Homing operation start
OFF
Acceleration time constant
Creep speed
3 ms or shorter
Homing position data
Home position shift distance
Homing direction
The servo motor stops with [AL. 090].
Deceleration time constant
Creep speed
Stroke end
Homing position data
2 CONTROL MODE
69
2.1 Control mode
2