Power Drive

Pneumatic Damper Drive: The Pneumatic Power Drive Solution
The Pneumatic Power Drive is custom designed to provide accurate control and a long life performance. The Pneumatic Power Drive includes a variety of positioners to choose from based on your plant standards. Standard features such as limit switches and manual overrides with handwheel. The Pneumatic Power Drive goes through a rigorous testing process in our Hebron, KY facility and are machined to required dimensions, holding design tolerances. The Pneumatic Drive has one moving part, providing years of maintenance free service

Power Drive® Features:

• Mode of force is a vane style actuator.
• The mounting hardware, support column or frame, and lever arm are made from carbon steel or stainless steel.
• The drive shaft is stainless steel and is supported by flanged ball bearings.
• The lever arm is infinitely adjustable, both radially and axially.
• Teflon tubing is shielded with braided stainless steel. The fittings are stainless steel.
• Field retrofits are designed to match the critical dimensions of the old drive unit. Remove the old unit, bolt in and connect the Power Drive.
• The control characteristic has superior positioning accuracy, typically within 1/4 % of supply signal.
• Torque output up to 14,000 ft-lbs.
• Available in spring return mechanical ‘fail’ position in linear double acting and spring return

Power Drive® Design:

• The Power Drive design assures high quality and structural soundness.
• Lower torque output units utilize a stand design, while large units have a frame design.
• Each design is modeled in a 3D modeling program.
• The stainless steel drive shaft is supported by bearings, to prevent actuator side loading.
• The lever arm position is infinitely adjustable through the use of the shaft locking device.
• The design of the field retrofit unit ensures exact interchangeability with the unit being replaced.
• This design significantly simplifies the change out. Merely unbolt and disconnect the linkage and power of the old unit, inspect the linkage for reuse, then simply install the new Power Drive.

Electric Damper Drive: The Electric Power Drive Solution
The electric Power Drive is designed to provide accurate control and a long life performance. The electric Power Drive goes through a rigorous testing process in our Hebron, KY facility and are machined to required dimensions, holding design tolerances.

Power Drive® Features:

• Mode of force is a heat treated worm and gear driven actuator.
• The mounting hardware, support column or frame, and lever arm are made from carbon steel or stainless steel.
• The drive shaft is stainless steel and is supported by flanged ball bearings.
• The lever arm is infinitely adjustable, both radially and axially.
• Field retrofits are designed to match the critical dimensions of the old drive unit. Remove the old unit, bolt in and connect the Power Drive.
• Torque output up to 33k.
• Standard discrete controls, optional futronic analog controllers and various digital network communications.

Power Drive® Design:

• The Power Drive design assures high quality and structural soundness.
• Lower torque output units utilize a stand design, while large units have a frame design.
• Each design is modeled in a 3D modeling program.
• The stainless steel drive shaft is supported by bearings, to prevent actuator side loading.
• The lever arm position is infinitely adjustable through the use of the shaft locking device.
• The design of the field retrofit unit ensures exact interchangeability with the unit being replaced.
• This design significantly simplifies the change out. Merely unbolt and disconnect the linkage and power of the old unit, inspect the linkage for reuse, then simply install the new Power Drive.

Electro-Hydraulic Damper Drive: The Electro-Hydraulic Power Drive Solution
The environmental demands for lower emissions and reduced fuel consumption have increased the control specification requirements for damper applications. REXA X2D-Series Damper Drives increase combustion efficiency and reduce operating costs by providing precise damper positioning. The exact precision of Electraulic™ Technology guarantees that the damper is controlled by the signal and not the process.

Why choose Electro-Hydraulic:

• Self-contained electrohydraulic technology
• Instantaneous response
• High stiffness
• Compact power to size ratio
• 100% modulating duty cycle
• No oil maintenance
• Customizable configuration

Typical Components:

• Electraulic™ Power Modules
• Rotary rack-and-pinion hydraulic cylinder
• 90 or 120 degree rotation (other rotations available)
• Drive base pedestal and drive arm (custom heights/ lengths available)
• Position feedback device
• REXA control enclosure

Features

• Self-contained, positive pressure hydraulic system
• 100% modulating duty cycle rated
• Fail-safe capable (spring fail or accumulator)
• Deadband adjustable from 5% to 0.1% (optional to 0.05%)
• Input signal: 4-20 mA analog
• Repeatability: < 0.1%
• Resolution adjustable to < 0.1%
• Linearity correctable to < 0.05%
• User-friendly, push-button calibration