If your plant expands, the PNOZmulti simply expands with it. Expansion modules are available to extend the modular system; these can be used in any combination to suit the requirement. The configurable safety systems always comprise a base unit and optional expansion modules.
A base unit has inputs, relay outputs, safe semiconductor outputs, outputs for automation applications, cascade input and cascade output. The number of inputs and outputs can be increased at any time by the expansion modules. Special expansion modules enable e.g. safe speed monitoring.