Especially for safety-critical applications, DIS Sensors has supplemented the QG40N series of sensors with a tilt switch that complies with SIL1/PLc class. Because all mandatory safety checks are housed in a single enclosure, OEMs can now achieve functional safety using one element instead of two. By using two tilt switches of this type, SIL2 safety can be achieved.
Tilt switches are electronic acceleration sensors with a switching output where the preset angle is horizontal. This type of sensor is ideal for monitoring the maximum tilt angle of a platform or ensuring the range of a crane or boom, for example.
When the measured angle exceeds the set angle, the sensor will switch the output and thereby notify the application’s control unit of the situation. The control unit can then respond in the desired manner (e.g. with an alarm or audible alarm, by limiting the speed of a vehicle or by putting the machine into safe mode). It is also a more efficient alternative compared to mercury or proximity switches.
In order to be able to use these flexible and widely used switches in safety-critical applications, DIS Sensors developed a special version in which all mandatory safety checks within the framework of SIL1 are housed in a single enclosure. When two sensors of this type are used, a Performance Level 2 can be achieved.
This version can be programmed for one or two axes, with the angle adjustable to ±170° and from ±80° respectively. Furthermore, the tilt switch is equipped with a dual PNP output up to 200 mA and housed in a robust enclosure with protection class IP67&IP69K. It also offers an accuracy of 0.5°. Finally, the sensor can be “zeroed” after installation, which contributes to greater assembly tolerances and thus reduces production and service costs.
A configurator is available as an option, allowing customers to independently set their switching points, delay times, hysteresis, and signal filters.
Would you like to know more about these tilt switches? Please call us on 0348 – 495 150 or fill in the contact form. We will be happy to help you!
