ELGO Electronic MTM-A-000 Series, Operating Manual

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Product Features
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5 Product Features
The MTM-A-000 measuring system is based on the physical principle of magnetism and is used for a high-
precision determination of the position, the moved distance and/or the speed. Based on this wear-free and con-
tactless absolute measuring system, MTM-A-000 is suitable for fixed round rod profiles - for example for non-
rotating piston rods of hydraulic cylinders in mobile automation.
The system consists of the following components:

Round rod resp. piston rod (provided by the customer for absolute coding by ELGO)

Application related sensor system (ELGO made)

Mechanical accessories for sensor adaptation on request
5.1 Principle of Scanning
In order to determine the absolute position, the basis of the
magnetic MTM-A-000
linear encoder consists of a scan-
ning technology, which scans the magnetically coded round
rod contactless and completely wear-free.
The measured value is processed by the internal evaluation
electronics and is available either via a CANopen interface
or as an analog output signal (mA or Volt). From here it
can be further processed by the subsequent electronics.
5.2 The absolute Measuring Principle
The absolute measuring principle ensures maximum safety, as the current position value is always present. Even
in the event of a power failure, no data is lost. The measuring system only needs to be referenced once by learn-
ing the upper and lower position (see

8.4 Calibration of the Measuring Range).
Figure 1: Example of an absolute coded round rod track
5.3 Available Output Signals
Depending on the ordered interface option (see type designation

11) the sampled signal information is con-
verted by the internal evaluation electronics into one of the following output signals:

Interface option CA0

CANopen standard interface according to DS406 (encoder profile)

Interface option I20

Analog 12 bit output signal (0 … 20 mA), proportional to the measured value

Interface option I24

Analog 12 bit output signal (4 … 20 mA), proportional to the measured value

Interface option V04

Analog 12 bit output signal (0.5 … 4.5 V), proportional to the measured value

Interface option V10

Analog 12 bit output signal (0 … 10 V), proportional to the measured value
More information can be found in chapter

9 Connections and Interfaces.
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