Foxboro SRD991 SRD991-BHFS6EA4NY-V01 Smart Valve Positioner with ASCO Solenoid Spool Valves
The Foxboro SRD991 (Schneider Electric) is a microprocessor-based intelligent valve positioner designed to accurately control pneumatic valve actuators. It supports single-acting and double-acting actuators for both linear and rotary applications. The device offers local configuration via push-buttons and a multilingual graphical LCD, advanced self-diagnostics, and multiple communication options (4–20 mA, HART, PROFIBUS-PA, FOUNDATION Fieldbus H1). It is engineered for easy mounting, fast Autostart commissioning, and predictive maintenance in process industries.
- Easy local operation with three push-buttons and menu-driven multilingual full-text graphical LCD (visible with cover closed)
- Time-saving Autostart with self-calibration (Standard, Enhanced, Smooth, Fast response options)
- Advanced and premium diagnostics (valve footprint, online friction, position/response history, Partial Stroke Test – PST)
- Communication protocols: 4–20 mA (no communication), HART (420 Ω load), PROFIBUS-PA, FOUNDATION Fieldbus H1 (FISCO, with function blocks and LAS)
- Suitable for safety applications up to SIL 3; Partial Stroke Test for ESD valves
- Mounting to NAMUR linear actuators (IEC 60534-6 / VDI/VDE 3847), rotary actuators (VDI/VDE 3845), and direct mounting on FlowTop/FlowPak
- Optional position feedback 4–20 mA, binary I/O, inductive/mechanical limit switches, gauges, boosters
| Parameter | Specification |
|---|---|
| Stroke range | 8–260 mm (0.3–10.2 in) with standard lever |
| Rotation angle | Up to 95° (optional up to 300°) |
| Air supply | 1.4–6 bar (20–90 psig); up to 7 bar with spool valve |
| Air quality | ISO 8573-1 Class 2 solids, Class 3 oil |
| Pneumatic action | Single or double acting |
| Protection | IP66 / NEMA 4X |
| Ambient temperature | –40 °C to +80 °C (–40 °F to +176 °F) |
| Weight | ≈1.7 kg (single), ≈2 kg (double) |
| Electrical connections | M20*1.5 or ½-14 NPT |
| Pneumatic connections | G¼ or ¼-18 NPT |
| Linearity / Hysteresis | <0.4 % / <0.3 % of travel span |
| Certifications | ATEX, IECEx, FM, CSA, SIL 3 capable, others |
Process control valves in oil & gas, chemical, petrochemical, power generation, pharmaceutical, and water treatment plants. Ideal for continuous control, ESD (emergency shutdown) valves via PST, and predictive maintenance strategies.
A: After mechanical mounting and pneumatic/electrical connections, select mounting type and run Autostart via the local keys and LCD (typically two main steps).
A: 4–20 mA (no protocol), HART, PROFIBUS-PA, and FOUNDATION Fieldbus H1.
A: Yes, with appropriate NAMUR or direct-mount kits; flat side of spindle must point toward the housing arrow.
- Foxboro SRD960 intelligent positioner
- FlowTop/FlowPak control valves
- VALcare / Valve Monitor FDT-DTM software
- volume boosters
- gauge manifolds
- inductive limit switches
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