Mitsubishi Electric MELSEC Q Series, Руководство пользователя

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8 - 10
Chapter 8 HPR Control
8.2.4 HPR method (2): Count method 1) [RJ010 mode]
The following shows an operation outline of the HPR method "count method 1)".
In the HPR with the "count method 1)", the following operations can be performed:

The machine HPR on the proximity dog
 The machine HPR again after the machine HPR is completed
Operation chart
1)
The machine HPR is started.
(The machine begins the acceleration designated in "[Pr.51] HPR acceleration time selection", in the direction
designated in "[Pr.44] HPR direction". It then moves at the "[Pr.46] HPR speed" when the acceleration is completed.)
2)
The machine begins decelerating when the proximity dog ON is detected.
3)
The machine decelerates to the "[Pr.47] Creep speed", and subsequently moves at that speed.
4)
The machine stops after the workpiece has been moved the amount set in the "[Pr.50] Setting for the movement amount
after proximity dog ON" after the proximity dog turned ON. It then restarts and stops at the first zero point.
5)
The HPR complete flag ([Md.31] Status: b4) turns from OFF to ON, and the HPR request flag ([Md.31] Status: b3) turns
from ON to OFF.
Machine HPR start
(Positioning start signal)
t
ON
OFF
ON
OFF
OFF
ON
0
V
ON
Pr. 47 Creep speed
Pr. 46 HPR speed
Pr. 50 Setting for the movement amount
after proximity dog ON
Md.34 Movement amount after proximity dog ON
Zero signal
Proximity dog OFF
Leave sufficient distance from the zero point
position to the proximity dog OFF.
Standby HPR
Md.26 Axis operation status
Inconsistent
Value the machine moved is stored
HP address
Value of 1.
Standby
Inconsistent
HPR request flag
( Md.31 Status : b3)
HPR complete flag
( Md.31 Status : b4)
Md.21 Feed machine value
Md.34 Movement amount
after proximity dog ON
Md.20 Feed current value
1
Adjust the setting for the movement amount after
proximity dog ON to be as near as possible to
the center of the zero signal HIGH.
If the setting for the movement amount after
proximity dog ON falls within the zero signal,
there may be produced an error of one servo
motor rotation in the HPR stop position.
One servo motor rotation
First zero signal after moving a set to " Pr. 50
Setting for the movement amount after proximity
dog ON.
A
POINT
After the home position return
(HPR) has been started, the
zero point of the encoder must
be passed at least once before
point A is reached.
Fig. 8.5 Count method1) machine HPR