ASCO Solenoid Spool Valves and Masoneilan SVI3 Intelligent Digital Valve Controller Valve Positioner

The Masoneilan SVI3 is a high-performance, HART-based digital valve positioner designed for precise control of pneumatic actuators in industrial valve applications. It converts a 4-20 mA input signal into a pneumatic output, supporting both single and double-acting actuators. The SVI3 introduces advanced online valve diagnostics to enhance plant efficiency, process uptime, and predictive maintenance. Housed in a rugged, weatherproof enclosure, it features an optional pushbutton LCD for local operation and integrates seamlessly with asset management systems via DTM or DD. Certified for hazardous areas, it offers scalable diagnostic levels (standard, advanced, online) and is suitable for marine and general industrial use, ensuring reliable performance in demanding environments.

• Advanced Diagnostics: Full suite of online valve diagnostics including standard (pressure sensors, travel counters), advanced (offline signatures), and online (continuous monitoring of friction, leaks) for predictive maintenance.
• HART Communication: Supports HART protocol for remote configuration, calibration, and diagnostics; integrates with DCS systems like Emerson AMS, Honeywell FDM.
• Auto-Tune and Calibration: Automatic tuning with aggressiveness levels (0 for no boosters); local LCD/pushbuttons for setup, including split range and custom characteristics.
• Rugged Design: Corrosion-resistant aluminum housing with IP66 rating; options for stainless steel in marine applications; flameproof conduit fittings for hazardous areas.
• Safety and Compliance: SIL capability with safety function instructions; supports CU TR 012:2011 for explosive atmospheres; overpressure and fault alerts.
• Flexible I/O: Optional options board for binary inputs/outputs, position retransmit, and switches; low power consumption with 9V at 20 mA compliance voltage.
• Ease of Use: Local display for status and errors; DTM software for detailed configuration and troubleshooting.

The SVI3 is optimized for valve control in oil & gas, petrochemical, chemical, and power industries, supporting surge-control, throttling, and safety applications on linear/rotary valves. It excels in harsh environments with vibration, corrosion, or extreme temperatures, and is suitable for marine applications with stainless steel options. Compatible with Masoneilan and non-Masoneilan actuators, it enhances process control in split-range configurations and safety instrumented systems (SIS) up to SIL levels.

• What causes a TuneERR after autotune? Possible air leaks, insufficient current (check 4-20 mA input), or high friction; refer to troubleshooting section for manual tuning.
• How to resolve "Std. Diagnostics Failed"? Check for actuator friction, air supply, or perform recalibration; see device status diagnostics table.
• What if the device shows "Out of Specification"? Deviations in ambient/process conditions; verify temperature, pressure, and recalibrate.
• How to handle "No Supply Press"? Ensure air supply is connected and meets 1.4-6.9 bar; check for blockages in pneumatic parts.
• What is the recommended aggressiveness level? Set to 0 for valves without boosters; adjust based on volume boosters for optimal response.

Phone/WeChat/WhatsApp:

+8613916209596

Email: svetama@gbsxj.com

• SVI3 Conduit Entry Plug Spare Part Kit (PN: 720085945-999-0000)
• ValVue3 Software: For configuration and diagnostics.
• SVI3 DTM: Device Type Manager for asset management integration.
• Booster Relays: For high-capacity applications.
• Pressure Gauges: For monitoring supply and output pressures.