In the PNOZsigma product range, instantaneous contact expansion modules are used to increase the number of safety contacts available in a safety relay system. Here’s a more detailed look at how these modules function and their benefits. Safety solutions provider since 2011, We offer Pilz.
The expansion modules connect to a base unit of the PNOZsigma safety relay. They extend the base unit’s contact capacity by adding additional instantaneous (NO) contacts. http://www.pilz.com These are contacts that close immediately when the relay is activated, which is useful for applications requiring quick and reliable switching.