DS250 / DS260 - Safety Speed Monitors for Incremental Encoders / Sensors

The Motrona DS250 / DS260 safety speed monitors provide solutions for ramp, underspeed, overspeed, standstill and direction of rotation applications.

DS250: 2 inputs for non-certified incremental encoders. Signal distributor for line break monitoring. Up to SIL3/PLe with two independent noncertified sensors.

DS260: 1 input for a SILs/PLe incremental encoder. Signal distributor for cable break monitoring. Up to SIL3/PLe with one equally certified sensor.

The input levels of the pulse inputs can be switched between HTL / HTL differential / TTL-RS422. Eight HTL / PNP control inputs also extend the functional variants.

Due to an adjustable encoder supply between 5 VDC and 24 VDC, the DS250 / DS260 units offer a flexible use of a wide range of encoder variants.

The safety-related outputs of the new device generation have been supplemented by an additional output relay (NO). Thus, the 4 fast switching transistor outputs and 2 forced relay outputs allow a variety of connection possibilities for external peripherals.

With the increased permissible load on the transistor outputs of max. 500 mA per output, external power contactors can be controlled without any problems.

Thereby these speed monitors are suitable for the retrofitting of systems and machines using existing "non-safe" incremental encoders and sensors. This not only saves significant costs, but also significantly reduces the cost of adaptation by maintaining the existing wiring.
The monitoring of the over-, underspeed, standstill and direction of rotation is ensured in the same way as the line break monitoring of the sensor signals.

A USB interface in combination with the user interface OS operator surface or, optionally, the BG200 display unit ensure simple parameterization of the certified monitors.