Mechatronics Canada


March 18, 2021

The safety relays PNOZ monitor safety functions such as emergency stop, safety gates, light barriers, light grids, two-hand controls, speed, standstill and much more besides. Every day, PNOZ safety relays prove themselves in millions of applications worldwide.

In 1987 Pilz patented the first emergency stop relay to protect man and machine. That was a milestone in safety technology. The safety relays PNOZ quickly progressed to be the world’s most commonly used safety relays. The PNOZ brand is now synonymous with safety relays. PNOZ – The original!

Continuous further development has led from simple devices to the modular safety relay myPNOZ and the configurable small controller PNOZmulti, the global safety standard for machines.

Count on the standard in safety technology – Your benefits

  •    -   International certification
  •    -   High plant availability and short downtimes thanks to convenient diagnostic options on the device
  •    -   Faster commissioning and simple wiring through units with plug-in terminals
  •    -   Complete solutions comprising evaluation devices, compatible sensor technology and control and signal devices
  •    -   Maximum safety, up to performance level “e” of EN ISO 13849-1 and SIL CL 3 of IEC 62061


Decision-making support: How to find the right safety relay

The modular safety relay myPNOZ is easy to operate, individually pre-assembled and therefore easy to install, so it complements our existing range of safety relays. But when do you use myPNOZ and when might PNOZsigma be the right choice? 

myPNOZ is the ideal solution if you: 

  •    -   have to monitor up to 16 safe inputs in your plant; 
  •    -   need a safety solution individually coordinated to your application; 
  •    -   want to implement both AND and OR links; 
  •    -   don’t have time to learn a new software; 
  •    -   are looking for a space-saving solution for your control cabinet;
  •    -   also have to flexibly exchange modules following commissioning. 

If you only need to monitor one individual safety function such as an emergency stop, we recommend our classic safety relays PNOZsigma or PNOZ X.

If you have to monitor more than 16 safety inputs in a more complex way and need comprehensive diagnostics, we recommend using the configurable small controllers PNOZmulti. They can be freely configured using the configurator.

The features of our safety relays at a glance

Our safety relays are distinguished by a variety of supply voltage ranges, the number of safety contacts, the number of terminals or the ability to plug in terminals. Find out more about the functions of a safety relay in the lexicon article.
Based on their different features and functionalities, our products can be divided into the following product groups:


  •    -   Safety relay with an internal combination logic
  •    -   Individual creation in myPNOZ Creator
  •    -   Tailor-made in batch size 1
  •    -   Quick and easy commissioning


  •    -   Maximum function in a minimum width
  •    -   Adjustable operating modes and times
  •    -   Scalable thanks to a modular design


  •    -   Safety for every function
  •    -   Electromechanical, floating
  •    -   With wide-voltage power supply unit


  •    -   Square, single, yellow
  •    -   Ideal for high-volume series machine manufacturers
  •    -   Basic function of a safety application


  •    -   Easy to link
  •    -   Wear-free
  •    -   Expanded diagnostics


  •    -   High loads from 8 A to 16 A
  •    -   Switch motor loads directly
  •    -   Modular output contacts


Save costs with push-in technology

The unit types with push-in technology offer a great advantage in terms of both economy and safety. They help you to cut costs due to short commissioning and service times.

The following product ranges are available with push-in, spring-loaded terminals:

  •    -   Safety relays PNOZsigma, PNOZ X, PNOZcompact, PNOZelog
  •    -   Monitoring relays PMDsigma
  •    -   Line monitoring devices PLIDdys
  •    -   Small controllers PNOZmulti 2, PNOZmulti Mini, PNOZmulti


Easy to service through simple operation

  •    -   Connection of all commercially available cables with or without wire-end ferrule
  •    -   Quick and easy wiring
  •    -   Double connection option per pole; can be opened individually or both at the same time (beneficial when installing or changing the wiring)
  •    -   Cost savings when replacing devices, since no rewiring is required and potential wiring errors during rewiring are eliminated
  •    -   Separate opening for voltage testing
  •    -   Coded plugs for easy and unmistakeable installation and increased handling safety during servicing
  •    -   Maintenance-free due to defined clamping force; unlike screw terminals, no need to retighten regularly; no follow-up costs due to retightening of the terminals
  •    -   High contact reliability even against strong vibrations and shocks
  •    -   Further looping of potentials possible without any problems


The optimum safety relay for every application

In addition to the classic E-STOP function, the safety relays now monitor safety gates, light barriers, two-hand controls, pressure sensitive mats, muting, standstill, speed and many other safety functions.


Latest Articles

  • Prev
  Hygiene or environmental protection? Preferably both! Companies in the consumer goods ...
  As a system engineer, it is important to have a reliable and long-lasting power ...
  Every day, sensors in production plants collect huge amounts of data. However, ...
  As technological advancements become common-place and affordable, more industries ...
  Building and maintaining the factory of the future requires capable individuals who ...
  Nadine Oliynyk is an Applications Engineering co-op student at Electromate Inc and ...
  Considerable investments are made with respect to industrial gear units so one ...
  Augmenta made headlines recently with an announcement that they have raised US $4.1 ...
  Well-made protective packaging is key to ensuring that foods such as fresh fruit and ...
  The Endress+Hauser Canada’s Partners in Process Hybrid Event 2022 was a big success. ...

Featured Article

MC Why Manufacturing Career Opportunities Will Soon Be Booming 1 400x275

A common misconception surrounds manufacturing today: the idea that introducing robotics and other automation equipment into the picture will rapidly dry up the industry’s career opportunities. In fact, automation does the opposite – by creating even MORE demand for human intelligence and ingenuity.

Building and maintaining the factory of the future requires capable individuals who enjoy solving problems and thrive on novelty. While the humdrum jobs of the past may be in short supply as they get transferred to robots, the installing, troubleshooting, and innovating tasks — essentially, the exciting ones — will be desperately in need of takers.

Furthermore, these jobs tend to be safer, pay better, and offer more opportunities for growth. Read on to find out how you can use your skills to thrive in today’s manufacturing job market.

 Have you ever wondered what it’s like to build the factory of the future? From fully autonomous mobile robots to human-like machine vision systems, the things that used to be “science fiction” are now real. What’s more, You can be working alongside them.

It’s obvious that opportunity will be knocking loudly at the door of anyone with a degree in engineering. But did you know that the automation industry also needs people who aren’t engineers? In fact, one of the job titles that’s poised to grow exponentially is automation technician, which you can do with just an associate degree or even a high school diploma.

to read more, click here 


Mechatronics Canada

Mechatronics Canada‘s editorial informs and engages a targeted audience of manufacturers, distributors, specifiers and end users delivering an editorial mix of the right content for the right audience.

Subscribe Here

Kerrwil Publications

538 Elizabeth Street, Midland,Ontario, Canada L4R2A3 +1 705 527 7666
©2022 All rights reserved

Use of this Site constitutes acceptance of our Privacy Policy (effective 1.1.2016)
The material on this site may not be reproduced, distributed, transmitted, cached or otherwise used, except with the prior written permission of Kerrwil