Mitsubishi Electric MELSERVO-JE, Instruction Manual

Page: 84 / 116

6. SERVO MOTOR DRIVING
6 - 19
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
OFF
ON
OFF
Deceleration time constant
Creep speed
Travel distance after proximity dog
+
Home position shift distance
Home position
return speed
Home position return position data
Proximity dog
Servo motor speed
Reverse
rotation
0 r/min
Forward
rotation
Statusword bit 10
Target reached
ON
OFF
Statusword bit 12
Homing attained
ON
OFF
Controlword bit 4
Homing operation start
DOG (Proximity dog)
Acceleration time
constant
10 ms or shorter
Servo motor speed
Reverse
rotation
0 r/min
Home position
return direction
Home position return start position
After retracting to before proximity dog,
the home position return starts from here.
Proximity dog
When a home position return is started from the proximity dog
Servo motor speed
Reverse
rotation
0 r/min
Forward
rotation
The home position return starts from here.
Home position
return direction
Home position return start position
Proximity dog
Stroke end (Note)
Note. This is not available with the software limit.
When the servo motor returns at the stroke end