Mitsubishi Electric FR-A820-00046 Instruction Manual page 374

Position control under vector control and PM sensorless vector control
Home position return
Pr. 1282 Setting
method
Count type front end
reference
6
Vector Vector Vector
PM PM PM
Tab. 5-59: Home position return methods (3)
If it is set under PM sensorless vector control, Home position return parameter setting error (HP3)
occurs.
NOTE Home position return automatic back-off function
In a system that uses home position return with proximity dog, if the home position return is com-
manded while the motor is in a position within the proximity dog, the motor moves out of the
proximity dog once, then starts deceleration to stop when it comes to the proximity dog again.
The home position return is performed automatically after that.
Home position
return speed
X76
5 - 172
Description
Deceleration starts at the front end of the proximity dog, and the position is shifted by the post-
dog travel distance and home position shift distance. The position after the shifts is set as the
home position.
Set pulses required for changing the speed from the home position speed to the creep speed or
more as the total of the post-dog travel distance and home position shift amount.
Point table 1
acceleration time
Position command
speed
0
Proximity dog
signal (X78)
Point table
selection signal
Servo-ON (LX)
Start signal
Creep speed
Home position
Home position return start position
Proximity dog
Point table 1
deceleration time
Home position
return speed
Creep speed
Proximity dog
Parameters
Post dog travel
distance
Home position
shift amount
Home
position
Time
I002826E