Excessive speeds pose a danger to people and machinery. The compact PSRmotion over-speed safety relays and zero-speed safety relays monitor and disconnect rotating parts safely in the event of an emergency. The switching devices are compatible with all common sensor types and can be configured and commissioned particularly quickly using buttons on the product or using software.
Cable adapter for PSR over-speed safety relays (PSR-RSM4 and PSR-MM30), 15/8-pos., cable length: 2.5 m, for controller: SEW
Safety relay module for speed or zero-speed monitoring up to SIL 3, Cat. 4, PL e, suitable for connecting two proximity switches, pluggable Push-in terminal block, width: 17.5 mm
Safety relay module for speed or zero-speed monitoring up to SIL 3, Cat. 4, PL e, suitable for connecting two proximity switches, pluggable screw terminal block, width: 17.5 mm
Safety relay module for sensor-free zero-speed monitoring for 3- and 1-phase motors up to SIL 3, Cat. 3, PL e, 2-channel evaluation of the residual voltage of AC, three-phase, and DC motors, plug-in screw terminal block, width: 12.5 mm
2-channel over-speed and zero-speed safety relay up to SIL 3, Cat. 4, PL e, 2 safe relay outputs, suitable for connecting HTL, TTL, or sine/cosine encoders as well as proximity switches, plug-in screw terminal block, width: 22.5 mm
Multi-functional memory block for the INTERFACE systemf for easy storage and backup of the configuration.
Safety relay module for sensor-free speed and speed range monitoring up to SIL 3, Cat. 4, PL e, 2-channel evaluation of the rotating field of AC and three-phase motors, plug-in screw terminal block, width: 12.5 mm
Safety relay module for sensor-free zero-speed monitoring for 3- and 1-phase motors up to SIL 3, Cat. 3, PL e, 2-channel evaluation of the residual voltage of AC, three-phase, and DC motors, plug-in Push-in terminal block, width: 12.5 mm
Safety relay module for sensor-free speed and speed range monitoring up to SIL 3, Cat. 4, PL e, 2-channel evaluation of the rotating field of AC and three-phase motors, plug-in Push-in terminal block, width: 12.5 mm
2-channel over-speed and zero-speed safety relay up to SIL 3, Cat. 4, PL e, 2 safe relay outputs, suitable for connecting HTL, TTL, or sine/cosine encoders as well as proximity switches, plug-in Push-in terminal block, width: 22.5 mm
The PSR-MM20 safe over-speed and zero-speed safety relay is designed for motion monitoring. The PSR-MM20 detects the overspeed or zero speed of rotating parts in systems and machines.
PSRmotion over-speed and zero-speed safety relay
The sensor-free PSR-MM35 over-speed safety relay reliably monitors speeds to protect against dangerous motion. Based on the rotary field measurement of the drive, the integrated safety functions STO (Safe Torque Off), SLS (safely limited speed), SSM (safe speed monitor), and SSR (safe speed range) are reliably implemented up to SIL 3 or PL e.
With the PSR-MM25 zero-speed safety relay, machine zero speed is monitored without any additional sensors and an interlocking device can be actuated, for example. The zero-speed state is detected by evaluating the voltage induced in a motor winding.
Over-speed safety relays and zero-speed safety relays for reliable motion monitoring
With the PSR-MM30 combined over-speed and zero-speed safety relay, you can monitor up to three different operating modes in addition to zero-speed mode. The PSR-MM30 ensures high system availability with its reliable measuring procedure.
PSRmotion software for over-speed and zero-speed safety relays
Our over-speed and zero-speed safety relays can be started up, parameterized, and monitored conveniently with the PSRmotion software.
In live measuring mode, you can visualize the motion sequences of your machine.
You can download the Windows-based software free of charge. The software is then adapted via a USB interface.