System components: Digital output module SFC428

The SFC428 high density relay output module is designed to switch pilot lamps, valves, as well as relay coils and supplies up to 5 A per output. In order to feed conventional analog, discrete and pulse signals into the control system and to provide facilities for controlling valves, starters, pumps, switches etc., a number of local I/O modules can be added to the Field Controller rack assembly. The modules are addressed by means of a channel number in a special Field Controller hardware transducer block and, depending upon type and function, connected to the fielbus system by means of multiple or standard input and output blocks. Depending upon I/O type, an Analog or Discrete Multiple function block provides a connection for up to 16 input or output signals.

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