SRD991-BHQS7EA4NY-V01 operate pneumatic valve

The intelligent positioner SRD991 is designed to operate pneumatic valve actuators and can be operated from
control systems (e.g. the Foxboro I/A Series System), controllers or PC-based configuration- and operation tools
such as the FDT/DTMs VALcare™ or Valve Monitor. The positioner is available with different communication
protocols. The multi-lingual full text graphical-LCD (optional with infrared interface), in conjunction with the 3 push
buttons, allows a comfortable and easy local configuration and operation. For installations in contact with explosive
atmospheres, certificates are available.

Intelligent
• Auto-start with self-calibration
• Self diagnostics, status- and diagnostic messages
• Easy local operation with three key pads
• Multi-Lingual full text graphical LCD
• VALcare™ or Valve Monitor DTM for valve diagnostics and predictive maintenance with communication
• HART, PROFIBUS-PA,
FOUNDATION Fieldbus H1,
• Configuration by means of local keys, handheld terminal (HART), PC or I/A Series system or with an infrared interface by means of IrCom without communication
• Input signal 4 to 20 mA

SRD991-BHQS7EA4NY-V01

• Stroke 8 to 260 mm (0.3 to 10.2 in) with standard lever; larger stroke with special lever
• Angle range up to 95° (up to 300° on request)
• Supply air pressure up to 6 bar (90 psig), with spool valve up to 7 bar (105 psig)
• Single or double-acting
• Mounting on linear actuators according to NAMUR – IEC 60534-6-1 – VDI/VDE 3847
• Mounting on rotary actuators acc. to VDI/VDE 3845 and IEC IEC 60534-6-2
• Protection class IP 66 and NEMA 4X
• Approved for SIL applications
• Explosion protection: Intrinsic Safety according to ATEX and FM/CSA

The SRD991 consists of a basic device with a digital controller that supports different communication protocols
(or also simply 4-20 mA input). Into this basic device, additional equipment can be built such as plug-in cards for
electrical input/output signals, position feedback and pressure sensors.
The pneumatic part is available in different versions (single / double acting or spool valve). For very large
actuators, boosters with increased air capacity can be flanged on. Also, different manifolds for connection of gauges
can be flanged on. For the pneumatic screw connections we offer different threads in the housing and adapters.
For use in hazardous areas there are approvals according to ATEX, FM, CSA …