Mitsubishi Electric MELSERVO-JET MR-JET User Manual page 78

■Method -9 and Method -41 (Dog type last Z-phase reference homing)
The following figure shows the operation of Homing method -9 when the home position shift distance is a positive value. The
homing direction of Homing method -41 is opposite to that of Homing method -9.
Statusword bit 10
Target reached
Statusword bit 12
Homing attained
Servo motor speed
Z-phase
DOG (Proximity dog)
Controlword bit 4
Homing operation start
*1 After the front end of the proximity dog is detected, if the rear end of the proximity dog is detected without stop, [AL. 090] occurs. Revise
the length of the proximity dog, or revise both the homing speed and creep speed.
• When homing is started from the proximity dog
Servo motor speed
The homing start position is automatically moved back to the position
just before the proximity dog, and homing starts from here.
• When the servo motor returns at the stroke end
Servo motor speed
Homing starts from here.
*1 This cannot be used with the software limit.
2 CONTROL MODE
76
2.1 Control mode
ON
OFF
ON
OFF
Acceleration time
constant
Forward
rotation
0 r/min
3 ms or shorter
Reverse
rotation
ON
OFF
ON
OFF
ON
OFF
Homing direction
0 r/min
Reverse
rotation
Homing direction
Forward
rotation
0 r/min
Reverse
rotation
Homing speed
Creep speed
Home position
shift distance
*1
Proximity dog
Homing start position
Proximity dog
Homing start position
Deceleration time constant
Homing position data
Proximity dog
*1
Stroke end