04/09/2026
Recently, HollySys’ T880 Triple-Modular Redundant Compressor Control System (CCS) has been successfully deployed for the MAN compressor train at Yancoal Xinjiang Coal Chemicals Co., Ltd.’s 80,000 Nm³/h air separation unit, enabling reliable operation across the full operating range.
To address challenges from aging control systems, HollySys upgraded the unit with its SIL3-certified T880 system, featuring a control cycle of less than 30 milliseconds and availability exceeding 99.99%. The project team reconstructed key control logic, including anti-surge protection and turbine startup functions, while completing critical integrations such as overspeed protection and speed probe compatibility.
As the first T880 application for an 80,000 Nm³/h air separation unit with a MAN compressor upgrade, this project demonstrates HollySys’ advanced turbomachinery control capabilities and provides a proven solution for modernizing legacy systems with safer and more reliable operations.
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