PI991
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ADCA ELECTRO-PNEUMATIC POSITIONERS PI991 DESCRIPTION The ADCATrol PI991 is a digital intelligent electronically configurable positioner with communication capabilities, designed for mounting to pneumatic linear or rotary actuators. Communication protocols include analog (4 to 20 mA) with or without superimposed HART communication, PROFIBUS PA and FOUNDATION Fieldbus-H1. The advanced diagnostic can be partially shown on the local LCD of the positioner or fully on a PC or a DCS workstation with a DTM based software (VALcare or Valve Monitor). The PI991 also has the capability to control a Partial Stroke Test (PST) that offers to operators a tool to identify the trouble-proof function of ESD (Emergency Shut Down) valves. MAIN FEATURES Low operating cost. Compact and flexible design. Easy to comission with user-friendly interface. Status and diagnostic messages displayed on LCD. Integrated mechanical position indicator. Mounting onto any linear or rotary actuator. Single or double acting. OPTIONS AND ACCESSORIES HART, Profibus PA or FOUNDATION Fieldbus-H1 communication. SIL3 certification. ATEX, FM, CSA and IECEx approvals. Stainless Steel housing for Offshore or Food and Beverage applications. Module for analog position feedback. Binary inputs and outputs. Digital position feedback with inductive switches (two or three-wire system). Digital position feedback with microswitches. Positioner with remote sensor. Sensors for supply air pressure and output pressure. Attachment kit for linear actuators acc. to IEC 534/NAMUR and rotary actuators acc. to VDI/VDE 3845. Connection manifold with gauges. Infrared Interface for wireless communication. Partial Stroke Test (PST) for Emergency Shut Down applications. VALSTEAM ADCA We reserve the right to change the design and material of this product without notice.

ADCA TECHNICAL DATA GENERAL INPUT SIGNAL Stroke range Housing: AISI 316L / 1.4404 st. steel, 1,25 mm thick Protection class IP 66 NEMA 4X Impact Resistance Pneumatic connections Electrical connections Angular range Remark: All “intelligent” versions are suplied with micro controller. RESPONSE CHARACTERISTIC Non-linearity (terminal based adjustment) M20 x 1,5 Cable glands Screw terminals: max. 2.5 mm² AMBIENT CONDITIONS Temperature effect Mechanical effect Ambient temperature FIELDBUS COMMUNICATION (ACC. TO FISCO) Max. particle size and density Supply voltage Operating current Current...