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The Asco Numatics SIL3 certified Redundant Control System (RCS) for process valves offers high flow rates for large process valve configurations. It is suited for use across a variety of oil and gas, refining,and power generation applications. The system is third-party certifiedfor use in IEC 61508 SIL 3 applications and has received system approvals for ATEX Zone1. The RCS achieves high levels of safety by incorporating a redundant, fault-tolerant architecture, high diagnostic coverage, and automated testing. Its self-diagnostic capabilities test boththe safety system and process valve to ensure continuous proper operating performance. It allows the end-user to specify a normally closed,normally open or double acting configuration in redundant control ‘2oo2’ (two-out-of-two) or single solenoid with back-up ‘1oo1’ (one-out-of-one) operation. RCS is available with automatic on-line testing of the solenoid valves and partial stroke testing of the process valve. Italso provides users with a maintenance/by-pass mode, permitting service to the device without taking the process valve off line.
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