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Positioner SRD991

Digital Positioner

The SRD991 has the very latest technology currently available on the market. This includes, among other things, an infrared interface for contact-free operation and configuration, and a multilingual text/graphic LCD.

Article number: SRD991-BDNS7EA4NYV01

Technical specification

4 to 20 mAHARTProfibusFieldbus
VALcareValve Monitor (DTM)
Ex i / intrinsicsafety according to ATEX
Multilanguage LCD

Application areas

Easy mounting to all linear and rotary actuators

Features and advantages

  • Easy to operate, menu-driven graphical LCD
  • Multilingual full text display, visible also with cover closed
  • All parameters can be configured locally by push buttons
  • Status and diagnostic messages displayed in LCD
  • Advanced diagnostics for Valve predictive maintenance
  • Suitable for safety applications up to SIL 3
  • Partial Stroke Test (PST) for Emergency Shutdown applications
  • HART-Protocol with only 420 Ohms load
  • PROFIBUS-PA acc. to IEC 1158-2 based on FISCO
  • FOUNDATION Fieldbus H1 acc. to IEC 1158-2 based on FISCO with PID, AO, 2xDI, DO function blocks and LAS functionality
  • Infrared Interface for wireless communication


TitleLanguageFile typeDownload
SRD991 Specification german pdf Download
SRD991 Specification english pdf Download