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Frequency dividers and multipliers

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article image The SI251 is designed for use with sine/cosine encoder systems.
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MKS, represented in Australia by Plant Control and Automation (PCA) , has released a frequency divider and multiplier for incremental encoder signals, as well as a sine-cosine interpolator.

The IT251 is an impulse and frequency divider for incremental encoder signals, providing error-free division of quadrature encoder signals, with an adjustable ratio from 1:1 to 1:4096. It also functions as a level converter for incremental encoder signals A/B/Z to both directions and offers translation between various modes of indication of the direction of rotation. It has a compact housing suited to DIN rail mounting and a maximum input frequency of 300kHz.

The SI251 sine/cosine interpolator has an adjustable multiplication rate and is designed for use with sine/cosine encoder systems. It converts sinus wave inputs with one Vss standard level into incremental quadrature output signals. Its RS422 / TTL outputs include A, /A, B, /B, Z, /Z while its 10V to 30V HTL outputs include A, B and Z. It has an adjustable multiplier for interpolation rates from 1:5 to 1:50, as well as an adjustable divider from 1:1 to 1:128, allowing reduction of the output frequency. The SI251 has a sinus input frequency of 0kHz to 400 kHz, quadrature output frequency of up to 4MHz and adjustable filtering functions.

Both units accept an 18V to 30V dc power supply. For more information please contact Plant Control Automation on 02 9482 3733.

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