Table of Contents
Advertisement
2 Product Features
The series EMAX2 is an absolute length measuring system. Sensor and translator and interpolation unit are
together in one housing. The magnetic tape of series EMAB is paste up to a plain area. The EMAX2 can be
mounted with a max. distance of 1.5 mm. (2.0 mm sensor distance to the magnetic tape with reduced
measuring accuracy)
The absolute length measuring system has the following advantages:
no reference necessary
direct contact free measurement
distance between sensor and magnetic tape can be between 0.1... 2.0 mm
->distance OK = LED glow green
->distance not OK = LED glow red
up to 20 m measuring length (on request)
high resolution 0.01 mm
repeat accuracy +/- 1 increment
inured against dirt
The following interfaces are available (RS422, addressable RS422, RS232, SSI, CANopen (DS406), CAN
BASIC ELGO (CN0).
Typical applications are handling systems, conveyor and storage technology, hydraulic presses, stamping
machines, casting machines, linear slides, linear drives and pick and place systems.
The guided version is delivered completely with magnetic tape guide and guiding wagon.
2.1 Functional Principle
A Hall sensor and a magneto-resistive impedance measuring bridge are guided over a two-track magnetic
tape with a fine-interpolation trace and an absolute trace. Together with the sensor line the absolute track
provides an absolute value and the fine-interpolation trace provides together with the interpolation electronic
the measuring systems high resolution.
Picture 1: Functional principle EMAX2
Pic. 2 shows two magnetic traces, with north pole and south pole magnetization. The fine interpolation trace
encloses alternately north and south pole traces with a distance of 5 mm, these are scanned with resistance
bridges and provide a resolution of 0.01 mm. The absolute value provides the sensor line with 16 single Hall
sensors, these sensors are scanning the code sections of the north and south poles. The absolute value on
the magnetic tape recurs every 10 m.
Interpolation trace
Not magnetised area
Absolute trace
Interpolation trace
Not magnetised area
Absolute trace
5
Product Features
Advertisement
Table of Contents
