Magnetic length measuring systems Micro incremental - SIKO

Catalogue Magnetic length measuring systems Micro incremental

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Appendix: Accuracy data, Signals illustration

Typical Measuring Curves

Magnetic strip MB100, sensor system MA100/2 with MS100, width of measuring steps 1.1 mm

A Accuracy class: 10 u,m

Deviation

B Accuracy class: 50 u,m

Deviation

0,06

—I-jHM/*^*

~~w№y~~ -

0,04

0,02

-0,02

-0,04

-0,06

0 200 400 600 800 1000 1200 1400 1600 1800 2000

LengthLl|

0 200 400 600 800 1000 1200 1400 1600 1800 2000

LengthLl|

Signals LE100/1

Note: Signal illustration refers to difference measurement

with index and reference signals

COS

E: 0 V ±5 mV

(reference voltage 2.5 V) F: 1 Vss ±10 % Relation of G to H: Offset ±10 mV J: a 0.2 V K: 0.7 V ±10 % L: 60° ... 80°

M: 90° ±1.5° / <±3° (20 kHz)

SIN

□

Signals MSK1000

Note: With the MSK1000, the position of the index signal I/R with regard to signals A and B is not defined. The index signal length is 1 increment with the MSK1000.

w'th index, reference signals and inverted signals

1_I I_I L

J I_I I_r

A /A

B /B

_n_

"L_T

I, R

/I, /R

Pulse interval MSK1000

The pulse distance "t" is the shortest time period which can occur between two signal edges when moving the magnetic sensor. Micro vibration can trigger it for example. It must be made sure that the follower electronics is able to correctly process the signals.

Pulse interval

J I_I L

1_I I_r

Example: pulse interval t = 1

input frequency = -

- = 250 kHz

1 ■ 4

The follower electronics must be able to work with 250 kHz.