Schneeberger MINISCALE PLUS - Output Signals and Supplying MINISCALE PLUS and Interface Module; Supply Voltage and Current Consumption; ANALOG Interface Module (Analog Signal 1 Vss)

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2.3V

100μm

0.5V

≈100 μm

Output Signals and Supply

5.8 / 6.1 Output Signals and Supply

The sensor head in the carriage sends sinusoidal output signals when the carriage

is moved relative to the dimensional scale along the guide rail.

These signals are interpreted in the interface module and displayed in analog

(see chapter 6.2) or digital form (see chapter 6.3), depending on the type of

interface module.

6.1 Supply Voltage and Current Consumption

Supply voltage: 5 V DC +/- 5%

This must be adhered to in order to generate output signals.

Current consumption: 60 mA (analog) / 70 mA (digital)

6.2 ANALOG Interface Module (Analog Signal 1Vss)

6.2.1 Output Format:

Differential, sin/cos analog signals with reference pulse

1 Vss (at 100Ω)

The incremental sine and cosine signals are displaced 90° and correlate with the

markings on the incremental track. One electrical signal period (360°) corresponds

exactly to the scale increment on the dimensional scale, which amounts to 100 μm.

The reference pulse always marks electrically a particular section of the path of the

sine and cosine signals. The point of intersection of the two signals within the

reference pulse marks a precisely defined position on the dimensional scale.

The sine signal either lags behind the cosine signal or occurs before it, depending

on the direction of movement.

The analog signal must be interpolated by the customer in order to achieve an

appropriate resolution (e.g. Period 100 µm, interpolation 250 times, analysed 4 times

results in a resolution of 0.1 µm. The frequency of the electronics must be adjusted

to the travelling speed. E.g. A speed of 2 m/s with signal period before interpolation

of 100 µm results in a frequency of 20 kHz (see calculation in chapter 9.3)

Single-ended signals

Analog interface

module output

Differential signals

Reference point

Sine

Cosine

Reference

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Schneeberger MINISCALE PLUS - Output Signals and Supplying MINISCALE PLUS and Interface Module; Supply Voltage and Current Consumption; ANALOG Interface Module (Analog Signal 1 Vss)

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