80
6 SERVO MOTOR DRIVING
6.1 Homing mode (hm)
■
Method 20 and Method 22 (Homing without index pulse)
The following figure shows the operation of Homing method 20. The operation direction of Homing method 22 is opposite to
that of Homing method 20.
*1 The home position shift distance can be changed with [Pr. PT07] and [Pr. PT69].
*2 The travel distance after proximity dog can be changed with [Pr. PT09] and [Pr. PT71].
• When a home position return is started from the proximity dog
• When the stroke end is detected
Controlword bit 4
Homing operation start
0 r/min
Statusword bit 10
Target reached
Statusword bit 12
Homing attained
ON
OFF
ON
OFF
ON
OFF
ON
OFF
ON
OFF
Home position shift distance
*1
+
Travel distance after proximity dog
*2
Deceleration time
constant
Acceleration time
constant
Home position return speed
Creep speed
Forward
rotation
Servo motor speed
10 ms or shorter
Reverse
rotation
Home position return
position data
Proximity dog
Z-phase
DOG (Proximity dog)
0 r/min
Home position return direction
Proximity dog
Home position return position data
Forward
rotation
Servo motor speed
Reverse
rotation
Home position shift distance
+
Travel distance after proximity dog
Home position return start position
0 r/min
Home position return direction
Stroke end
Forward
rotation
Servo motor speed
Home position return start position
Stops due to the occurrence of [AL. 90]