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The compact DIN rail RFS single-loop controller is a cost effective solution suitable as slave PID loop to a PLC. Many users prefer to use asingle-loop controller to manage each zone of a process, to link thetemperature controllers and zones to a supervisory controller for coordination and remote single-point monitoring. The RFS offers fast response times with single point monitoring using the Modbus communicationinterface, and has in-built intelligence. It has been designed using aSmart PID self-tuning algorithm equipped with soft start and a non-linear cooling function for use on water cooled extruders. The smart tuning adjusts the unit to existing process dynamics. The three outputs provide a heat plus two alarms or heat/cool plus alarm configuration. Acomplete set of process protection alarm functions are included. Allinputs and outputs can be read over the Modbus interface and the master can write to outputs not assigned as alarm or status functions, formachine troubleshooting and remote diagnostics. It is easily configured using PC wizard software and parameters can be modified at any time.
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