PowerVUE™ Fan Damper Actuators with Digital Fieldbus Communications Retrofit Kit 4 x 5 or 8 x 14

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Combines the power and reliability of the Hagan Pneumatic Drive with the accuracy and features of the Fisher DVC5000/6000 Digital Valve Controller Integral I/P: FOUNDATION™ fieldbus input or 4-20mA Reliable, closed loop positioning Double acting piston; no vanes Optional "fail in place" upon loss of air Manual operator ValveLink Diagnostics/AMS Suitable for hazardous area service; explosion-proof, flameproof or intrinsically safe

FEATURES AND APPLICATIONS Hagan Pneumatic Power Positioners have defined the standard of excellence in fan and damper actuation for more than 70 years. These actuators convert the linear motion from a pneumatic piston into an 80° rotation of a drive arm. With few moving parts, the pneumatic power positioner remains the simplest, most reliable and most cost-effective method of actuation. Torque ranges are offered from 400 ft-lbs to 4,600 ft.-lbs. The new PowerVUE design utilizes the same rugged Hagan actuator and frame construction, combined with the accuracy and reliability of the Fisher FieldVUE DVC5000/6000 Digital Valve Controller. The DVC5000 controller, using the HART or FOUNDATION fieldbus communications protocols, gives easy access to information that is critical to process operation. The controller uses feedback of the actuator travel position to diagnose not only the instrument, but the actuator as well. The information from the DVC5000/6000 can be integrated into control systems or be received for a single loop. These instruments use two-wire loop power for low-cost replacement of existing instruments. The two-wire design avoids cost of separate power and signal wiring. Self-diagnostic capabilities allow you to check fan/damper actuator performance in place. You can compare the present signature (load, friction, etc.)against stored signatures to discover performance changes before they cause problems. Field maintenance of these instruments is easy. Repair consists of quick replacement of a single master module without disconnecting wires or tubing. Troubleshooting of the master module is fast and easy in the instrument shop. Traditional positioners utilize a mechanical force/balance concept, whereby a pneumatic input signal forces a diaphragm down, actuating a valve which ports air into one side of a piston and vents the other side. A feedback spring provides a counterbalancing force as the actuator approaches setpoint. Mechanical positioners have worked well for many years, but are subject to sticking as mechanical components become soiled, resulting in a situation where the actuator "hunts" for the proper position. The process variable is always above or below setpoint, providing poor control that costs significant money, and causes excessive wear on the actuator/linkage/dampers system. The FieldVUE DVC5000/6000 Digital Valve Controller directly receives a 4-20 mA or fieldbus input signal. An independent feedback transducer provides an actuator position input, ensuring that the PowerVUE drive always moves to the setpoint demanded by the Control System. Fieldbus versions of the DVC5000/6000 also offer PID loop control capability. An existing Hagan torque-type power positioner can be retrofitted with the PowerVUE system in a few hours. The PowerVUE system eliminates most maintenance requirements associated with mechanical "balance" positioning systems, based on pilot valves. The Hagan PowerVUE retrofit package includes all mounting brackets, hardware, and pneumatic tubing needed to upgrade an existing Hagan Pneumatic Power Positioner. No drilling or tapping of holes is required. (The positioning system mounts directly to the frame, eliminating the need for connecting linkages.)