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Speed monitoring with IO-Link

Compact speed sensors with integrated evaluation electronics and IO-Link in different housings for different applications

  • Various designs for different applications
  • Adjustable modes, e.g. single, two point or window mode
  • Many additional functions via IO-Link
  • Flush and non flush
  • Connector unit with 24 V DC supply voltage

Compact speed monitoring
The evaluation electronics are integrated in the sensor housing. This allows for low-cost and easy monitoring of rotating as well as linear movements regarding overspeed and underspeed. The limit of the speed at which the output switches is set via IO-Link.

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 different designs and the large speed range allow for an integration into almost any application.

Functions via IO-Link
The speed sensors incorporate complete speed monitoring. Additional values are provided via IO-Link, for example the current speed or the set switch point. Parameters such as the start-up delay can be set remotely using IO-Link. Besides, the “window mode” can be activated via IO-Link. Two switch points that can be set independently of each other provide added value. Teaching can also be done remotely via IO-Link. Due to the optional background compensation it is possible to adjust the sensing range through “teaching” in order to suppress interfering elements in the background. To increase plant transparency, a connection to the ifm SMARTOBSERVER is possible. Of course it is also possible to operate the IO-Link enabled sensor in SIO mode.

Operating principle
The integrated inductive 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.