6 SERVO MOTOR DRIVING
6.1 Homing mode (hm)
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6
Precautions on use of the proximity dog
■
Length of the proximity dog
Set the proximity dog to a length that satisfies the following equation so that the servo motor speed changes from the home
position return speed to the creep speed during the detection of a proximity dog.
L
1
: Length of the proximity dog [mm]
V: Home position return speed [mm/min]
td: Time it takes to decelerate from home position return speed to creep speed [s]
■
Adjustment of proximity dog position
To eliminate variations in the home position return completion position, perform adjustment so that the proximity dog detection
position is approximately centered between the Z-phase signal and the next Z-phase signal.
The generation position of the Z-phase signal can be checked with "Position within onerevolution" of "Status Display" on MR
Configurator2.
L
1
V
60
td
2
•
≥
0
0
Resolution/2
Servo motor Z-phase
Proximity
dog
