"INTELLIGENT":

• Autostart with self-calibration

• Self diagnostics, status- and diagnostic messages

• Easy local operation and configuration by means of three push-buttons

• Display by means of full-text-graphical-LCD in multiple languages, or LEDs

• "WITH COMMUNICATION":

• HART

• FOUNDATION fieldbus H1

• PROFIBUS-PA

• FoxCom

• "WITHOUT COMMUNICATION":
  (in preparation)
  Input signal 4 to 20 mA

TECHNICAL DATA:

• "WITH COMMUNICATION":
  • HART: Load 420 Ohm (8.4 VDC at 20mA)
  • Fieldbus: Base-current 10.5 mA (acc. to FISCO)
  Function-blocks: AO, PID, Transducer, Resource
  Link Master (backup-LAS)
  • FoxCom: Digital point-to-point communication or Analog

• "WITHOUT COMMUNICATION":
  4-20 mA: Load 300 Ohm
  (6 VDC at 20 mA)

COMMON FEATURES:

• Stroke 8 to 260 mm (0.3 to 10.2 in)

• Angle range up to 95 °

• Supply air pressure up to 6 bar (90 psig), with Spool Valve up to 7 bar (105 psig)

• Low air consumption

• Low vibration effect in all directions

• Single or double-acting

• Mounting on linear actuators directly

• or  according to IEC 534, Part 6 (NAMUR)

• Mounting on rotary actuators according to VDI/VDE 3845

• Protection class IP 65, NEMA 4X

• Suitable for use in safety related applications up to SIL 3 according to IEC 61511-1 if the SIL safety instructions are observed

• Explosion protection:
  Explosion protection:
  • II 2 G EEx ia IIC acc. to ATEX
  • “Intrinsic Safety” acc. to FM and CSA

• Built-in independent inductive limit switches in 2-wire or 3-wire technology (optional)

• Pressure Sensors for supply air and output (optional)

• Additional in-/outputs (optional)
  • 2 binary outputs (position alarms)
  • Position feedback 4 to 20 mA, 1 alarm output
  • 2 binary outputs

The intelligent Positioner SRD991 is designed to operate pneumatic valve actuators and is available in the version EEx ia / intrinsically safe.
   The positioner is available with different communication protocols. This includes versions with analog setpoint (4 to 20 mA) without communication and with superimposed HART-signal; digital with FoxCom protocol, or fieldbus communication according to PROFIBUS-PA and FOUNDATION Fieldbus H1 based on IEC 1158-2 acc. to the FISCO-Model.
   The unit can be configured and operated from the Foxboro I/A Series System in connection with our Intelligent Field Device Configurator (IFDC) or the PC-based configuration- and operation tool PC20. The SRD can also be integrated into system environments and applications that support the FDT/DTM concept according to the Specification 1.2. For this purpose the required DTMs for HART, PROFIBUS and FoxCom are available. In addition the device can be integrated into any other common control system such as Fisher Rosemount-AMS or -Delta-V, Siemens SIMATIC- PDM, Yokogawa, Honeywell, ABB and SMAR.
   The local operation and configuration can be achieved comfortable and easy by a multi-lingual full text graphic LCD in connection with the three push buttons.
   Available menu languages so far:
• English (Standard)
• German (Standard)
   Freely selectable third menu-language:
• French
• Spanish
• Portuguese
• Polish
• Czech
• Italian
• Turkish
• Swedish
• Finnish
• Chinese
• Russian
• Hungarian
• Serbian
• Dutch
   The LCD version of the positioner can also include an infrared interface, that allows a configuration by means of a PC, without setting up an electrical connection to the unit.


Operation


Configuration


Diagnostics message

French text version: