In metal housing with ATEX approval, group II, category 3D
Compact speed monitoring
The new speed sensors are the compact solution for speed monitoring because the evaluation electronics are integrated in the sensor housing. The limit at the speed of which the output switches is set via a potentiometer or IO-Link. Both rotary and linear movements can be monitored for overspeed, underspeed and blockage. As compared to its predecessors, these new sensors feature a robust metal housing for flush mounting. A special version with ATEX approval is available for which no additional impact protection is required.
Especially in the field of conveying technology the compact speed sensors can be used for various applications, for example for monitoring belt conveyors or bucket elevators. Here they are typically used to monitor underspeed, blockage or standstill.
The speed sensors incorporate the complete speed monitoring. The switch point can be set using a multiturn potentiometer. IO-Link provides additional functions such as remote information about the current speed or the switch point and the configuration of important additional parameters such as the start-up delay time. This allows direct communication with the controller or the SMARTOBSERVER.
The integrated sensor is damped by passing cams or other metallic targets. The evaluation unit determines the period duration or the frequency (actual rotational speed value) on the basis of the time interval between damping and compares it to the set switch point (preset value). The output is switched during the start-up delay and when the rotational speed exceeds the set switching value. An LED signals underspeed and switch-off of the output.