Rotork enhances the Skilmatic SI range of electro-hydraulic actuators

Published: 30th May 2023 | Issue 84

Rotork introduces a compact and robust quarter-turn design to its Skilmatic SI range of self-contained electro-hydraulic actuators. The new actuator uses a rack and pinion drive for a torque output of up to 1,000 Nm (737 lbf.ft).

The SI range of actuators combine the simplicity of electrical operation with the precision of hydraulic control and the reliability of mechanical spring-return fail-safe action. Typical applications for Skilmatic SI actuators include functional safety-related Emergency Shutdown (ESD) inputs and Remotely Operated Shutoff Valve (ROSoV) duties.

Robustly constructed for challenging environments, SI actuators deliver a highly reliable means of safety valve positioning and intelligent management. With a wide choice of operating speeds, ESD options with single or dual inputs and partial stroke testing (PST) to meet a wide range of applications. All actuators are available with hazardous area certification and are suitable for use in SIL 2/3 systems.

The actuators share the same intelligent features as Rotork’s IQ3 range, including non-intrusive commissioning by means of an intrinsically safe handheld Bluetooth wireless setting tool, performance monitoring and configurable data logging, increased functionality, and enhanced availability of valve and process data for asset management and data analysis.

The actuator data logger is capable of storing up to 3,000 events. Users can export data logs to Insight 2 or Rotork’s cloud-based Intelligent Asset Management (iAM) system. iAM enables proactive maintenance to help reduce unplanned downtime through advanced analytics of valves/flow control assets and anomaly detection. With Insight 2 software, users can review, configure and analyse actuator setup configuration and data logger information easily and quickly.

Offering the flexibility of customisation to suit the application, SI range actuators can be integrated into the majority of digital bus control systems, including Rotork’s Pakscan™ network, Foundation Fieldbus®, DeviceNet®, Profibus®, Modbus® and HART®.

The SI range delivers quarter-turn torque output up to 200,000 Nm (147,500 lbf.ft) and linear thrust output up to 400 kN (90,000 lbf) that are suitable for valves of virtually any size and design.