Sharp CP-SR421 Manuale Utente Scaricare il pdf (Pagina 301)

14. USING A LINEAR SERVO MOTOR

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3) Linear servo motor movement (when FLS (Upper stroke limit) or RLS (Lower stroke limit) is off)

When FLS or RLS is off at servo-on, the magnetic pole detection is carried out as follows.

RLS FLS

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⏛ᭂᬌ಴㐿ᆎ૏⟎

ࠨ࡯ࡏࠝࡦ

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ࠨ࡯ࡏࠝࡦߣหᤨߦછᗧߩ⏛ᭂ

ᬌ಴㐿ᆎ૏⟎߹ߢ⒖േߒߚ޽ߣ㧘

⏛ᭂᬌ಴ࠍ㐿ᆎߒ߹ߔޕ

ᢙ࿁ᓔᓳㆇォߒߚᓟ㧘⏛ᭂᬌ಴㐿ᆎ૏⟎ߦᚯࠅ⏛ᭂᬌ಴߇

ቢੌߒߡࠨ࡯ࡏࡠ࠶ࠢ⁁ᘒߦߥࠅ߹ߔޕߎߩߣ߈㧘㐿ᆎ૏

⟎߆ࠄ⏛ᭂኻࡇ࠶࠴⒟ᐲߕࠇࠆߎߣ߇޽ࠅ߹ߔ

Note. For the pitch against magnetic pole, refer to (3) (a) 2) Note 2 of this section.

(b) For the absolute position linear encoder

POINT

When the absolute position linear encoder is used, the magnetic pole detection

is required when the power is turned on with the following timing.

When the system is set up (at the first startup of equipment)

After a servo amplifier is replaced

After a linear servo motor (primary-side or secondary-side) is replaced

After a linear encoder (scale or head) is replaced or its position is adjusted

When the absolute position linear encoder is used, if a gap is generated to the

positional relation between the linear encoder and the linear servo motor,

perform the magnetic pole detection again.

Perform the magnetic pole detection in the following procedure.

1) Set [Pr. PL01 Linear servo motor/DD motor function selection 1] to "_ _ _ 1" (Magnetic pole

detection at first servo-on).

[Pr.PL01]

ೋ࿁ࠨ࡯ࡏࠝࡦᤨ⏛ᭂᬌ಴ೋᦼ୯

2) Execute the magnetic pole detection. (Refer to (3) (a) 1), 2) of this section.)

3) After the completion of the magnetic pole detection, change [Pr. PL01] to "_ _ _ 0" (Magnetic pole

detection disabled).

[Pr.PL01]

⏛ᭂᬌ಴ήല

After the magnetic pole detection, by disabling the magnetic pole detection function with [Pr. PL01],

the magnetic pole detection after each power-on is not required.

The linear servo motor moves to a magnetic pole

detection start position upon servo-on, and the

magnetic pole detection is executed.

Servo-on

position

Magnetic pole detection

start position

Magnetic pole detection completion position

The linear servo motor reciprocates several times and returns to the magnetic pole detection start

position to complete the magnetic pole detection and to go into the servo-lock status. At this time,

there may be a gap, approximately a quarter of the pitch against magnetic pole, from the start position.

(Note)

Magnetic pole detection at first servo-on (Initial value)

Magnetic pole detection disabled

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Sharp CP-SR421 Manuale Utente Pagina 301

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