The Compressor and Engine control system are designed, tested and built to safely start, stop, and automatically sequence a three-stage Ariel compressor with a gas-engine driver.

An Allen-Bradley PanelView 1000 colour Touch screen display mounted on the control panel door serves as the HMI (Human Machine Interface). The interface displays first-in shutdowns, alarm history, sequencing messages, and all process real-time data. Separate pushbuttons mounted on the door are provided for Unit Start, Unit Stop, Local ESD (Emergency Shutdown), Alarm/Shutdown Reset, and Horn Silence.

Logic function for the compressor control system includes:

• - Start Sequence.
• - Shutdown Valve sequence control.
• - Cool-down stop sequence.
• - Manual Speed control.
• - Emergency Shutdown.
• - Unit Local Shutdown System.
• - “Maintenance Mode” screen for input/output verification and shutdown bypass logic.

The system is designed to the following conditions:

• - Operating Temperature : 0 to 50° C (32 to 140° F)
• - Storage Temperature : -40 to 85° C (-40 to 185° F)
• - Relative Humidity : 5 to 90% (non-condensing)

Hazardous Area Classification

• - All electrical equipment fitted within the Compressor Enclosure shall be suitable for operation in operation in an NEC Class 1 Division 2 Group D temperature Class T3 hazardous area.

Control System Enclosure

• - The control system enclosure is a NEMA 4X rated 316SS Enclosure.

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