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6 SERVO MOTOR DRIVING
6.1 Homing mode (hm)
Operation example of Manufacturer-specific Homing method
The following shows an operation example of the Manufacturer-specific home position return.
Method -1 and -33
■
Dog type homing
The following figure shows the operation of Homing method -1. The home position return direction of Homing method -33 is
opposite to that of Homing method -1.
*1 After the front end of the proximity dog is detected, if the rear end of the proximity dog is detected without reaching the creep speed, [AL.
90] occurs. Revise the length of the proximity dog or revise both the home position return speed and creep speed.
*2 The home position shift distance can be changed with [Pr. PT07] and [Pr. PT69].
• When a home position return is started from the proximity dog
• When the movement is returned at the stroke end
*1 This is not available with the software limit.
Statusword bit 10
Target reached
Statusword bit 12
Homing attained
0 r/min
Controlword bit 4
Homing operation start
*1
ON
OFF
ON
OFF
ON
OFF
ON
OFF
ON
OFF
Deceleration time constant
Acceleration time
constant
Home position return speed
Home position
shift distance
*2
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
Servo motor speed
Reverse
rotation
Home position return start position
Moves back automatically before the proximity dog,
then performs home position return from this position.
0 r/min
Home position return direction
Stroke end
*1
Proximity dog
Home position return start position
Forward
rotation
Servo motor speed
Reverse
rotation
Performs home position return from this position.