Sharp CP-SR421 User Manual download pdf (Page 300)

14. USING A LINEAR SERVO MOTOR

14 - 13

(a) For the incremental linear encoder

POINT

When the incremental linear encoder is used, the magnetic pole detection is

required when the power is turned on.

For the incremental linear encoder, the magnetic pole detection is required every time the power is

turned on. By turning on the servo-on command from the controller after the power-on, the magnetic

pole detection is automatically carried out. Therefore, there is not need to set the parameter (first

digit of [Pr. PL01]) for executing the magnetic pole detection.

1) Timing chart

15sએਅ

OFF

95ms

ࠨ࡯ࡏࠝࡦᜰ઎

ࡌ࡯ࠬ࿁〝

RD(Ḱ஻ቢੌ)

⏛ᭂᬌ಴ᤨ㑆(ᵈ)

Note. The magnetic pole detection time indicates the operation time when FLS (Upper

stroke limit) and RLS (Lower stroke limit) are on.

2) Linear servo motor movement (when FLS (Upper stroke limit) and RLS (Lower stroke limit) are

on)

RLS

(

ᵈ

FLS

(

ᵈ

(

ᵈ

⏛ᭂᬌ಴ቢੌ૏⟎

ࠨ࡯ࡏࠝࡦ૏⟎

(

⏛ᭂᬌ಴㐿ᆎ૏⟎

)

Note 1.

When FLS (Upper stroke limit) or RLS (Lower stroke limit) turns off during the magnetic pole detection, the operation of the

magnetic pole detection is carried on to the opposite direction. When both FLS and RLS are off, [AL. 27 Initial magnetic pole

detection error] occurs.

The following shows the pitch against the magnetic pole.

LM-U2

Linear servo motor series

LM-H3

LM-F

Medium thrust

(Continuous thrust:

Less than 400 N)



Large thrust

(Continuous thrust:

400 N or more)

LM-K2

Pitch against magnetic pole

[mm]

48 30 60 48

Base circuit

Servo-on command

RD (Ready)

Magnetic pole detection time (Note)

15 s or less

95 ms

Servo-on position

(Magnetic pole detection start position)

(Note 1)

(Note 2)

Magnetic pole detection completion position

(Note 1)

1 2 ... 295 296 297 298 299 300 301 302 303 304 305 ... 403 404

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Sharp CP-SR421 User Manual Page 300

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