Sharp CP-SR421 Instrukcja Użytkownika Pobierz pdf (Strona 310)

14. USING A LINEAR SERVO MOTOR

14 - 23

Note.

The parameter whose symbol is preceded by * is enabled with the following conditions:

* : After setting the parameter, power off and on the servo amplifier or reset the controller.

**: After setting the parameter, cycle the power of the servo amplifier.

(b) Settings of the number of pulses (AP) and travel distance (AL)

૏⟎ࡈࠖ࡯࠼ࡃ࠶ࠢ

[mm]

ᜰ઎

[mm]

ㅦᐲࡈࠖ࡯࠼ࡃ࠶ࠢ

[

mm/s

]

࡙࡯ࠩ

ࠦࡦ࠻ࡠ࡯࡜ ࠨ࡯ࡏࠕࡦࡊ

࡝࠾ࠕ

ࠨ࡯ࡏࡕ࡯࠲

࡝࠾ࠕࠛࡦࠦ࡯࠳

ᓸಽ

Calculate the number of pulses (AP) and travel distance (AL) of the linear encoder in the following

conditions.

When the linear encoder resolution is 0.05 μm

ࡄ࡞ࠬᢙ(AP)[pulse]

⒖േ㊂(AL)[ m]

0.05

14.3.6 Function

(1) Linear servo control error detection function

POINT

For the linear servo control error detection function, the position and speed

deviation error detections are enabled by default. ([Pr. PL04]: _ _ _ 3)

If the linear servo control gets unstable for some reasons, the linear servo motor may not operate

properly. To detect this state and to stop operation, the linear servo control error detection function is

used as a protective function.

The linear servo control error detection function has three different detection methods: the position

deviation, speed deviation, and thrust deviation. An error is detected when each method is enabled with

[Pr. PL04 Linear servo motor/DD motor function selection 2]. The detection level can be changed with

[Pr. PL05], [Pr. PL06], and [Pr. PL07].

ࠨ࡯ࡏࠕࡦࡊౝㇱ୯

ࡕ࠺࡞ࡈࠖ࡯࠼ࡃ࠶ࠢ

૏⟎

[mm]

ࡕ࠺࡞ࡈࠖ࡯࠼ࡃ࠶ࠢㅦᐲ

[mm/s]

ᜰ઎ផജ

[%]

࡝࠾ࠕࠛࡦࠦ࡯࠳

ࡈࠖ࡯࠼ࡃ࠶ࠢ

૏⟎[mm]

ࡈࠖ࡯࠼ࡃ࠶ࠢ

ㅦᐲ

[mm/s]

ࡈࠖ࡯࠼ࡃ࠶ࠢផജ

[%]

ࠨ࡯ࡏࠕࡦࡊ

࡝࠾ࠕࠨ࡯ࡏࡕ࡯࠲

࡝࠾ࠕࠛࡦࠦ࡯࠳

Figure 14.1 Outline of linear servo control error detection function

Command

User

Position feedback

Speed feedback

Controller

Servo amplifier

Linear servo motor

Linear encoder

Differ-

entiation

Number of pulses (AP)

Travel distance (AL) [ȝm]

Servo amplifier

Servo am

lifier internal value

1) Model feedback position [mm]

3) Model feedback speed [mm/s]

5) Command thrust [%]

2) Feedback position [mm]

4) Feedback speed [mm/s]

6) Feedback thrust [%]

Linear encoder

Linear servo motor

Linear encoder

1 2 ... 305 306 307 308 309 310 311 312 313 314 315 ... 403 404

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