Mitsubishi Electric MELSEC iQ-R RD75P4, Руководство пользователя

Страница: 414 / 598

412
12 DATA USED FOR POSITIONING CONTROL
12.3 Basic Setting
[Pr.47] Creep speed
Once the near-point dog turns on, the control decelerates from OPR speed and stops. Set the speed of right before the stop,
which is a creep speed. Set the creep speed within the following range.
• ([Pr.46] OPR speed)

([Pr.47] Creep speed)

([Pr.7] Bias speed at start)
The creep speed is related to the detection error in the OPR method using the zero signal, and to the size of the shock when
a collision occurs in the OPR method using the stopper method.
■
Buffer memory address
The following table shows the buffer memory address of this area.
■ Setting range
The setting range depends on the setting of [Pr.1] Unit setting.
*1 When this buffer memory area is set with programs, a calculation is performed in the RD75 to convert a setting value to the value in
each unit. For setting this buffer memory area, take the value after the unit conversion into consideration.
■
Default value
The default value is 1 for all the axes.
Buffer memory name Axis 1 Axis 2 Axis 3 Axis 4
[Pr.47] Creep speed 76 226 376 526
77 227 377 527
Setting of [Pr.1] Unit setting Setting value with engineering tools Setting value with programs
*1
0: mm 0.01 to 20000000.00 (mm/min) 1 to 2000000000 (

10
-2
mm/min)
1: inch 0.001 to 2000000.000 (inch/min) 1 to 2000000000 (

10
-3
inches/min)
2: degree 0.001 to 3000000.000 (degree/min) 1 to 3000000000 (

10
-3
degrees/min)
3: pulse 1 to 5000000 (pulse/s) 1 to 5000000 (pulse/s)
ON
t
OFF
Pr.46
Pr.47
V
OPR speed
Machine OPR start
Creep speed
Near-point
dog signal
Zero signal