Mitsubishi MELSEC-Q QD77MS, Руководство пользователя

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13 - 15
Chapter 13 Control Sub Functions
(1) For "Ball screw" + "Reduction gear"
When the ball screw pitch is 10mm, the motor is the HG-KR (4194304
PLS/rev) and the reduction ratio of the reduction gear is 9/44.
M
Machine
Reduction ratio 9/44
First, find how many millimeters the load (machine) will travel (
S
) when
the motor turns one revolution (AP).
• AP (Number of pulses per rotation) = 4194304 [PLS]
• S
(Movement amount per rotation)
= Ball screw pitch
×
Reduction ratio
= 10 [mm]
×
9/44
= 10000.0 [
μ
m]
×
9/44
Substitute this for the above expression (1).
At this time, make calculation with the reduction ratio 9/44 remaining as a
fraction.
AP
4194304 [PLS]
S
=
10000.0 [
μ
m] ×
9/44
4194304 ×
44
=
10000.0 ×
9
184549376
=
90000.0
23068672 23068672 (AP)
=
11250.0
=
11250.0 (AL) ×
1 (AM)
23068672 (AP)
=
1125.0 (AL) ×
10 (AM)
Thus, AP, AL and AM to be set are as follows.
AP = 23068672... Pr.2 AP
= 23068672. Pr.2
AL = 11250.0 … Pr.3 or AL
= 1125.0 … Pr.3
AM = 1 ………… Pr.4 AM = 10 ……… Pr.4
Note): These two examples of settings are only examples. There are
settings other than these examples.