The ESM modular principle
The modules in this series are typically built into a housing that is only 22.5 mm wide. Various safety relays are available to which expansion modules can be added on the output side. The advantage of the ESM modular principle is that different safety evaluations can be realized with only a few module variants.
The relays can be operated with various types of starting. The devices can be started manually or automatically using suitable wiring. The manual start can also monitor the start button.
Using suitable wiring it is also possible to integrate a feedback circuit such that safety-related parts of a machine or system downstream can also be monitored. In the ESM series the majority of the devices are available with a variety of input voltage ranges.