2 CONTROL MODE
2.1 Control mode [G] [WG]
61
2
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Method -2 and -34 (Count type homing)
For the count type homing, after the front end of the proximity dog is detected, the position is shifted by the
distance set in the travel distance after proximity dog. Then, the first Z-phase is set as the home position.
Therefore, when the on-time of the proximity dog is 10 ms or more, the length of the proximity dog has no
restrictions. Use this homing when the dog type homing cannot be used because the length of the proximity
dog cannot be reserved or other cases.
The following figure shows the operation of Homing method -2. The homing direction of Homing method -34 is opposite to that
of Homing method -2.
*1 After the front end of the proximity dog is detected, if the distance after proximity dog is traveled without reaching the creep speed, [AL.
090] occurs. Set the travel distance after proximity dog enough for the servo motor to decelerate from the homing speed to the creep
speed.
• When homing is started from the proximity dog
• When the servo motor returns at the stroke end
*1 This cannot be used with the software limit.
Statusword bit 10
Target reached
ON
OFF
Statusword bit 12
Homing attained
ON
OFF
0 r/min
*1
ON
OFF
ON
OFF
Controlword bit 4
Homing operation start
ON
OFF
Deceleration time constant
Homing speed
Creep speed
Forward
rotation
Servo motor speed
3 ms or shorter
Reverse
rotation
Homing position data
Travel distance after
proximity dog
Proximity dog
Z-phase
DOG (Proximity dog)
Acceleration time constant
Home position
shift distance
0 r/min
Homing direction
Proximity dog
Servo motor speed
Reverse
rotation
Homing start position
The homing start position is automatically moved back to the position
just before the proximity dog, and homing starts from here.
0 r/min
Homing direction
Stroke end
*1
Proximity dog
Homing start position
Forward
rotation
Servo motor speed
Reverse
rotation
Homing starts from here.