Rotork - Skilmatic SI4 linear actuator

The Skilmatic SI range are self-contained electro-hydraulic actuators combining the simplicity of electrical operation with the precision of hydraulic control and the reliability of mechanical spring-return fail-safe action.

Features:

• SI4 linear thrust output up to 400 kN (90,000 lbf)
• Electrical powered, 1-phase, 3-phase or 24 VDC
• Fail-safe to close, open or lock-in-last position
• Spring-return configuration
• Adjustable operating speeds with stepping facility and optional internal flow control valves
• Optional accumulators provide multiple back-up strokes on loss of power supply along with increasing the hydraulic stroke speed on spring-return actuators
• Configurable Partial Stroke Testing (PST)
• Single or dual ESD/PSD input with solenoid configuration options
• Positioning control option 4-20 mA input and output, resolution <0.25%
• Network options include Pakscan™, Profibus®, Modbus®, HART® and Foundation Fieldbus®
• Data logger, recording up to 3,000 events
• Configurable status and alarm outputs
• Watertight up to IP66/68 (control module), IP66/67 (complete assembly)
• Explosion-proof Exdb IIB & IIC T4 –ATEX, IEC and CSA
• Certified to IEC 61508-2:2010 for SIS with a Systematic Capability SC-3
• TÜV Functional Safety SIL certified to IEC 61508-2:2010
• Suitable for use in SIL 2 and SIL 3 system