SRD991 Intelligent Positioner with HART, PROFIBUS-PA, FOUNDATION Fieldbus H1 or without Communication
The intelligent positioner SRD991 is designed to operate pneumatic valve actuators and can be operated from control systems, controllers or PC-based configuration- and operation tools such as the FDT/DTMs VALcare™ or Valve Monitor.
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, there are different threads in the housing and adapters.
For use in hazardous areas, there are approvals according to ATEX / IECEx, FM, CSA, EAC, NEPSI, etc.
The device can be configured locally by means of push buttons and LCD / LED, or with PC + EDC82 Modem connected to the service plug of the SRD991. By means of communication, the device can be configured remotely via FDT/DTM. For more information about the attachment kits for all common valves and actuators, see TI EVE0011 A.
features
Intelligent:
- • Auto-start with self-calibration
- • Self diagnostics, status and diagnostic messages
- • 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, FOUNDATION Fieldbus H1, PROFIBUS-PA
- • Configuration by means of local keys, handheld terminal (HART), PC with FDT-DTM or Digital Control Systems
Without communication:
- • Input signal 4 to 20 mA