Carriers are the building blocks on which the MTL8000 system is assembled. They distribute the basic power supply services to the modules, and provide the communications route between the Bus Interface Module (BIM) or Controller and the I/O modules. Most carriers can be mounted on DIN rail or directly to a flat surface and may be joined end-to-end to extend the size of an installation. Multipin connectors at the end of each carrier carry the system power supply and internal ‘Railbus’ communications across to the next carrier. All I/O module carriers have their own independent grounding busbar, with screw terminals, to terminate the screens/shields of field-wiring cables. At each end of the bar there is a separate terminal to enable it to be linked to other carriers, or to the system ground, as required.

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