The Ex digital output modules have the following mechanical features:
Compact configuration; The rugged plastic housing contains:
Green LEDs for each circuit to indicate "1" signal (internal status, not affected by short-circuit at the terminals)
Red LEDs for each circuit to indicate wire break or short-circuit.
Slot for front connector and cable guide, protected by the front cover
Labeling area on the front cover.
Easy installation: The module is mounted on the DIN rail and connected to the adjacent modules via bus connectors. There are no slot rules; the addresses of the inputs are predetermined by the slot.
User-friendly wiring: The modules are wired by means of a plug-in front connector. When they are first plugged in, a coding element clicks into place so that the connector will only fit into modules of the same type. The front connector contains a special barrier for covering the module's 24 V load current supply. When the module is replaced, the front connector can be used in its fully wired state for the new module of the same type.