Mitsubishi Electric MELSERVO-JE Instruction Manual page 84

6. SERVO MOTOR DRIVING
7) Method 23 and Method 27 (Homing without index pulse)
The following figure shows the operation of Homing method 23. The operation direction of
Homing method 27 is opposite to that of Homing method 23.
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
DOG (Proximity dog)
OFF
ON
Controlword bit 4
Homing operation start
OFF
Servo motor speed
When a home position return is started from the proximity dog
Servo motor speed
Note. This is not available with the software limit.
Home position
Acceleration time
return speed
constant
Home position return position data
10 ms or shorter
Home position
return direction
0 r/min
Reverse
rotation
After retracting to before proximity dog,
the home position return starts from here.
Home position
return direction
Forward
Home position return start position
rotation
0 r/min
Reverse
rotation
The home position return starts from here.
When the servo motor returns at the stroke end
Deceleration time constant
Creep speed
Proximity dog
Home position return start position
Proximity dog
6 - 19
Travel distance after proximity dog
+
Home position shift distance
Proximity dog
Stroke end (Note)