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motrona SinCos - Model SI220 -Interpolator with Incremental Output

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The SI220 is a sophisticated encoder interface utilized for converting, multiplying, and dividing output signals from sine-cosine encoders and similar measurement systems into incremental pulse signals. This device interpolates a specified number of output pulses per period of sine-cosine voltage input, with an adjustable multiplier factor. A division of these pulses is also possible before output, facilitating versatile applications. The SI220 comes with extensive features, including control inputs for error detection and control outputs marked 'Error'. Additionally, it offers an adjustable interpolation factor, multiplier, divider, and glitch filter to cater to a multitude of technical applications. Configuration is made simpler via two 12-pin DIL switches, enhancing its usability in various operational environments, making it an intelligent choice for signal processing needs.
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The SI220 is the soccessor of the SI251.

The SI220 is an encoder interface for converting, multiplying and dividing the output signals of so-called sine-cosine encoders and comparable measuring systems into incremental pulse signals. A corresponding number of output pulses is interpolated from each period of the incoming sine-cosine voltage signal, taking into account an adjustable multiplier. If necessary, these can also be divided before output.

Extensive features such as control input for error triggering, control output "Error" as well as an adjustable interpolation factor, multiplier, divider and glitch filter ensure a broad range of applications of this intelligent interpolator. The desired settings are made via two 12-pin DIL switch.

  • Encoder input with format SIN+, SIN-, COS+, COS-, REF+, REF- [1 Vss]
  • Control input „Error Release“ for PNP signals [10 ... 30 VDC]
  • Input frequency up to 400 kHz
  • Pulse output with format A, /A, B, /B, Z, /Z [RS422] or with format A, B, 90° [HTL]
  • Output frequency up to 4 MHz [RS422]
  • Control output „Error“ with push-pull characteristic,
    short-circuit-proof, [5 ... 30 VDC]
  • Power supply 18 ... 30 VDC
  • Snap-on housing for top hat rail (according to EN 60715)
  • Adjustable multiplier for interpolation rates from 1:5 to 1:50
  • Adjustable divider 1:1 – 1:255 to reduce the output frequency