Purpose of Interlock in Distributed Control Systems (DCS)

Interlock is logic developed for machine parameters / Process parameters protection in case process goes out of control limits,

• To annunciation alarms to alert operator

• To take corrective action automatically for defined parameters

• To ensure that healthy compressor and process condition are available to start the machine

• To safeguard the Compressor by tripping automatically if critical parameters exceed danger limit & prevent severe damage.

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