Machine Hpr Method - Mitsubishi Electric MELSEC-Q Series User Manual

8.2.2 Machine HPR method

[Pr.43] HPR method
Proximity dog method
[RJ010 mode]
Count method 1)
[RJ010 mode]
Count method 2)
[RJ010 mode]
Data set method
[RJ010 mode]
Scale origin signal
detection method
[RJ010 mode]
Driver HPR method
[CiA402 mode]
Proximity dog method
Count method 1)
Count method 2)
Data set method
Scale origin signal detection method
Driver HPR method
: Necessary,
(Note-1): Confirm the HPR specification of the servo amplifier for the signals required for control.
The method by which the machine HP is established (method for judging the HP and
machine HPR completion) is designated in the machine HPR according to the
configuration and application of the positioning method.
The following table shows the methods that can be used for this HPR method.
(The HPR method is one of the items set in the HPR parameters. It is set in "[Pr.43]
HPR method" of the basic parameters for HPR.)
Deceleration starts by the OFF
Creep speed".)
The operation stops once after the proximity dog turns ON and then OFF. Later the
operation restarts and then stops at the first zero signal to complete the HPR.
The deceleration starts by the OFF
at the "[Pr.47] Creep speed".
The machine stops once after moving the distance set in the "[Pr.50] Setting for the
movement amount after proximity dog ON" from the OFF
operation restarts and then stops at the first zero point to complete the machine HPR.
The deceleration starts by the OFF
at the "[Pr.47] Creep speed.
The machine moves the distance set in the "[Pr.50] Setting for the movement amount after
proximity dog ON" from the proximity dog OFF
The machine HPR is then regarded as completed.
The position where the machine HPR has been performed becomes an HP.
The feed current value and feed machine value are overwritten to the HP address.
The machine moves in the opposite direction against of "[Pr.44] HPR direction" at the
"[Pr.46] HPR speed" by the OFF
carried out once at the first zero signal. Later the operation moves in direction of "[Pr.44]
HPR direction" at the "[Pr.47] Creep speed", and then stops at the detected nearest zero
point to complete the machine HPR.
The servo amplifier is switched to the HPR mode and the HPR set in the servo amplifier
starts. After the HPR is completed, the servo amplifier is returned to the previous control
mode.
REMARK
Creep speed
The stopping accuracy is poor when the machine rapidly stops from fast speeds.
To improve the machine's stopping accuracy, it is required to slow down the speed
before it stops. This speed is set in the "[Pr.47] Creep speed".
The following shows the signals as required for machine HPR.
[Pr.43] HPR method
[RJ010 mode]
[CiA402 mode]
: Necessary as required,
Operation details
ON of the proximity dog. (Speed is reduced to "[Pr.47]
ON of the proximity dog, and the machine moves
ON of the proximity dog, and the machine moves
ON of the proximity dog, and a deceleration stop is
Proximity dog
(Note-1)
: Unnecessary
8 - 7
Chapter 8 HPR Control
ON position. Later the
ON position, and stops at that position.
Signals required for control
Zero signal Upper/lower limit
(Note-1) (Note-1)