ASCO™ Redundant Control System

ASCO Redundant Control System
The ASCO™ Redundant Control System (RCS) is the only pilot valve system that has no single point of failure that could result in an unwanted closure of the process valve. The Redundant Control System is fit for use in SIL 3 applications and greatly reduces spurious trip rates. RCS achieves a higher level of process safety and reliability by using a redundant, fault tolerant architecture, high diagnostic coverage, and automated testing. A keyed bypass allows on-line maintenance of the RCS without process interruption. The RCS is available in a variety of constructions that provide valve diagnostics through automated, online testing.


ASCO's Redundant Control System Provides...

  • Process reliability and valve diagnostics, for safety instrumented applications up to SIL 3
  • The industry’s best choice for process valve diagnostics and actuation
  • Complete functional safety with enhanced reliability

The availability and reliability of RCS provides the industry’s best choice for process valve diagnostics and actuation. Advantages include:
  • No nuisance trips
  • Easy on-line maintenance
  • High availability
  • Automated solenoid testing
  • Known technology
  • Automated partial stroke testing
  • Industry’s best choice for valve actuation and automated testing

The ASCO™ RCS is the only pilot valve system with no single point of failure that can result in unwanted closure of the process valve.



Read Emerson’s white paper Doubling Up On Safety to learn more about the benefits of the Redundant Control System.

Download ASCO™ Redundant Control System Brochure


Talk to one of our experts today at (855) 737-4714, or fill out our online form to learn more.
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