ELGO Electronic GMIX2 Series, Operating Manual

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Product Features
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5 Product Features
GMIX2 is an incremental sensor that can be mounted at a distance
of up to 4 mm to the magnetic tape (

7.5). For rotative resp. radial
applications a magnet ring (

7.6) can be used alternatively. The
evaluation electronics, which converts the measured signals into 90°
phase-shifted square-wave signals A and B, is already integrated in
the sensor head.
Thus GMIX2 is ready-to-connect for subsequent electronics. The system is supplied with 10 ... 30 VDC and
generates HTL output signal levels according to the supply voltage.
Essential features:
 Predestined for applications in storage and conveyor technology

Compact sensor head with integrated evaluation electronics

High mounting distance to magnetic tape (max. 4 mm)

Speed proportional square wave signal outputs

2.5 mm resolution (at 4-edge triggering)

Repeat accuracy ± 1 increment

High protection class IP67
Applications:
With its resolution of 2.5 mm and a maximum operating speed of 10 m/s, the GMIX2 measuring system is ide-
ally suited for applications in storage or conveyor technology or for longer measuring distances. Thanks to the
wear-free magnetic measuring principle and the high IP67 protection class, the sensor always works unaffected
and reliably even in harsh environments.
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 refinement of the interpolation, together
with the pole distance of the magnetic tape, the resolution of the measuring system is determined.
The magnetic tape MB20-50-10-1-R has a pole pitch of 5 mm.
A special evaluation electronic (translator) processes the sine/cosine wave into HTL square output signals from
the signal information of the magnetic tape. These square signals are equivalent to conventional optical rotary-
or linear encoder outputs.
Figure 2: Magnetic Tape Encoding
5.2 Pulse Diagram
Figure 3: Output Pulse Diagram
N N N N S S S S N N N N S S S S N N S S N N S S S
B
A
90°
10 … 30 V
Channel A and B are phase
shifted by 90° (±20 %).
Figure 1: GMIX2