Mitsubishi Electric MELSEC-L LD75D, Руководство пользователя

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125
CHAPTER 5 DATA USED FOR POSITIONING CONTROL
5
5.
2
List
of
P
a
ramet
e
rs
5.2.2
Basic parameters 2
(1) [Pr.8] Speed limit value
Set the maximum speed during positioning and OPR operations. If the specified speed exceeds speed limit
value, positioning will be limited at the speed limit value.
Set the speed limit value within the range of the following formula. If the speed limit value exceeds the range, the
error "Outside speed limit value range" (error code: 910) will occur.
• The command pulse frequency converted from the speed limit value

Max. output pulse
*1
*1 LD75P

: 200kpulse/s
LD75D  : 4Mpulse/s
(a) Setting range
(2) [Pr.9] Acceleration time 0, [Pr.10] Deceleration time 0
"[Pr.9] Acceleration time 0" specifies the time for the speed to increase from zero to the "[Pr.8] Speed limit value"
(When in the JOG operation control, to the "[Pr.31] JOG speed limit value".)
"[Pr.10] Deceleration time 0" specifies the time for the speed to decrease from the "[Pr.8] Speed limit value"
(When in the JOG operation control, from the "[Pr.31] JOG speed limit value".)
• If the positioning speed is set lower than the parameter-defined speed limit value, the actual
acceleration/deceleration time will be relatively short. Thus, set the maximum positioning speed equal to or
only a little lower than the parameter-defined speed limit value.
• These settings are valid for OPR, positioning and JOG operations.
• When the positioning involves interpolation, the acceleration/deceleration time defined for the reference axis
is valid.
Item
Setting value, setting range
Default value
Setting value buffer memory
address
Value set with GX Works2 Value set with program Axis 1 Axis 2 Axis 3 Axis 4
[Pr.8] Speed limit value
The setting range differs depending on the "[Pr.1] Unit setting".
(

Page 125, Section 5.2.2 (1) (a))
200000
10
11 160
161 310
311 460
461
[Pr.9] Acceleration time 0 1 to 8388608 (ms) 1 to 8388608 (ms) 1000
12
13 162
163 312
313 462
463
[Pr.10] Deceleration time 0 1 to 8388608 (ms) 1 to 8388608 (ms) 1000
14
15 164
165 314
315 464
465
[Pr.1] setting value Value set with GX Works2 (unit) Value set with program (unit)
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
inch/min)
2: degree 0.001 to 2000000.000 (degree/min)
1 to 2000000000 (

10
-3
degree/min)
3: pulse 1 to 4000000 (pulse/s) 1 to 4000000 (pulse/s)
Actual
acceleration
time
Actual deceleration time
Time
Speed Speed limit value
Positioning speed
Acceleration time 0
Pr.9 Pr.10
Pr.8
Deceleration time 0