As part of our AirStar® family of controllers, Case offers a unique control scheme for Sullair two-stage, rotary screw compressors. The AirStarPD-SAS™ upgrade provides significant advantages over the OEM controls, delivering tighter control and increased reliability.
The controls provided with Sullair TS32/25 series compressors use a microprocessor to control the inlet and spiral-valve via mechanical/pneumatic pressure regulators. The problem is that this control scheme requires regular cleanings and fine tuning to operate efficiently. Pneumatic devices use hot, wet, unconditioned air straight off the top of the separator lid. Shuttle valves stick, regulators clog, control-line filters clog and auto-drains fill with rust and condensate. This need for continuous maintenance is the weak link.
Replacing the pneumatic control scheme with electronic controls, I/P transducers, and a modern PLC based control solution will yield noticeable results. Tighter pressure control, improved efficiency, faster system response, less maintenance, and valuable data are just some of the added benefits.
Allows complete configuration, tuning, troubleshooting, and operation of the compressor.
Easily supported—no proprietary parts are used.
Whether on-site, by phone, or via modem connection, support is prompt, effective, and available 24/7.
Thoroughly addresses set-up, tuning, troubleshooting, and operations.
Native and Modbus is optional for connection to any third party DCS, MIS, or SCADA systems.
Two I/P transducers - For Sullair Spiral Valve
Two Analog Outputs
Control is optional for Rotary Screw Compressors.
Permits electronic integration with numerous third party controllers.
The base system is defined as having eight analog inputs and ten digital outputs which are dry contacts. Additional variables for display, alarming, machine trip, and start-permissive can be added and configured in the field. When requested, the analog inputs can be increased to eighteen. Instruments are not included as part of the controller and may be provided separately, or existing instruments may be reused.
*The following configuration is an example of a standard build. Each control system can be customized to meet your specific requirements.
Compressor automation isn’t only about efficiency and reliability. It’s about delivering a solution that lends peace of mind. An autonomous, real-time monitoring, state of the art product that solves the need for tedious, daily, manual manipulation, and guess-work. With real-time monitoring and data collection you can rest easy knowing you’re getting the most out of your system. Don’t settle… do more, take control.