Pulse echo improves sensor communications
A
Schmersal UK product story
Edited by the Engineeringtalk editorial team
Feb 1, 2006
Non-contact safety sensor for monitoring the position of safety guards uses pulse-echo technology to communicate between the sensor and actuator.
Schmersal has introduced the CSS 34 non-contact safety sensor for monitoring the position of safety guards.
It uses pulse-echo technology to communicate between the sensor and actuator, which allows for greater offset of the coded actuator, both in the switching distance and lateral offset.
This means, for example, that door misalignment is more easily tolerated and detected without interrupting the process.
When it detects this offset, it sends an alarm signal so users can adjust the safety guard before signals can no longer be transmitted and the machine stops.
This increases machine productivity.
The user always gets the necessary information thanks to the integrated LEDs that indicate the sensor's operating status.
It has a rectangular design and can be fitted to standard 40mm profiles of safety guards and machine housings using two screws.
Slotted holes allow for an accurate alignment of the sensor with the actuator.
The variable actuating direction and four possible actuating planes increase flexibility.
Multiple CSS sensors can be wired in series and monitored with one safety relay, so users can save time and money in installation and product costs.
Safety switches, solenoid interlocks and safety sensors can be monitored through a common safety relay without loss of the control category.
Therefore, installations can achieve control category four to EN 954-1 and SIL level three to PR EN 13849.
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