Mitsubishi Electric RD77MS2 User Manual page 224

Movement speed during home position shift
When using the home position shift function, the movement speed during the home position shift is set in "[Pr.56] Speed
designation during home position shift". The movement speed during the home position shift is selected from either the
"[Pr.46] Home position return speed" or the "[Pr.47] Creep speed". For the acceleration/deceleration time, the value specified
in "[Pr.51] Home position return acceleration time selection" or "[Pr.52] Home position return deceleration time selection" is
used.
The following drawings show the movement speed during the home position shift when a mechanical home position return is
carried out by the near-point dog method.
■Home position shift operation at the "[Pr.46] Home position return speed" (When "[Pr.56]
Speed designation during home position shift" is 0)
[Pr.44] Home position
return direction
V
Home position
Machine home position
return start
Near-point dog
Zero signal
■Home position shift operation at the "[Pr.47] Creep speed" (When "[Pr.56] Speed designation
during home position shift" is 1)
[Pr.44] Home position
V
return direction
Home position
Machine home position
return start
Near-point dog
Zero signal
8 CONTROL SUB FUNCTIONS
222
8.2 Sub Functions Specifically for Machine Home Position Return
[Pr.46] Home position
return speed
When the "[Pr.53] Home position
shift amount" is negative
[Pr.47] Creep speed
When the "[Pr.53] Home position
shift amount" is negative
When the "[Pr.53] Home position
shift amount" is positive
Home position
When the "[Pr.53] Home position
shift amount" is positive
Home position