Product Features; Functional Principle; Pulse Diagram - ELGO Electronic EMIX23 series Operating Manual

5 Product Features

The EMIX23 is an incremental magnetic length measuring system. The sensor technology and translator are
placed in the same housing. The magnetic tape is adhered to a flat base with the supplied adhesive tape. The
EMIX23 can be installed up to a maximum distance of 0.8 mm.
The measuring system offers decisive advantages:
Direct and contactless measurement

Distance range between sensor and tape: 0.1... 0.8 mm

Status LED for reading distance available (option only for version 5 VDC / 5 V-TTL)

Theoretically unlimited measurement length

High resolution of 0.001 mm

Repeat accuracy +/- 0.004 mm

Very robust against dust and dirt

Definable reference pulse (option)

Signal output with channels A, A´, B, B´, Z, Z´.
5.1

Functional principle

The basis of the magnetic incremental encoder consists of a scanning technology, which scans the north and
south poles on the coded magnetic tape and produces a single Sine/Cosine wave for each pole.
The complete sine/cosine signal process is interpolated electronically. Depending on the interpolation refine-
ment, together with the pole distance of the magnetic tape, the resolution of the measuring system is deter-
mined. The MB 20.20 magnetic tape has a pole pitch of 2 mm. A special evaluation electronic (translator) pro-
cesses the sine/cosine wave into square output signals from the signal information of the magnetic tape. These
square signals are equivalent to conventional optical rotary- or linear encoder outputs.
S N S N S N
Figure 1: Code of the Magnetic Tape
5.2

Pulse diagram

A
A'
B
B'
Z
Z'
Figure 2: Pulse Diagram
S N S N S N S N S N S N
The channels A and B are phase
shifted by 90°.
The index pulse output occurs
periodically every 2 mm or op-
tionally as a free definable refer-
ence pulse (R / R').
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Product Features
S N S N S N S