Universal Eddy Current Power Amplifier Units (PAU)

DS 820 Universal Power Amplifier shown integrated with InterLoc and Cell Interface AssistantDyne Systems introduces the DS820, an intelligent, third generation, universal Power Amplifier Unit (PAU). The modular construction allows the DS820 (center) to be interfaced with different dynamometer control components.

DyneSystems offers two options for controlling a dynamometer:

  • Closed Loop solution, utilizing either the Dyn-Loc IV or the Inter-Loc V dynamometer controller.
  • Open Loop solution at about half the cost, utilizing a Universal Eddy Current Power Amplifier Unit.

DyneSystems PAU's are designed to operate as standalone units or will interface with most available controllers. Compatible with the popular National Instruments LabVIEW™ software.

Three examples of error messages provided by DS820 universal eddy current PAUThree examples of error readouts provided by DS820 Universal Eddy Current Power Amplifier Unit.

DS820 - The Intelligent PAU Solution

pdf logoThe DS820 uses single-phase regenerative control with additional field forcing functionality, to provide ultra-fast response. Its main advances over the DS507 (see below) are LCD readout of diagnostics, faults and other information; 30 Amp capability in the rack-mounted model; and its ability to interface with all existing DyneSystems dynamometer controllers as well as most competitors' controllers.

  • Interfaces with all existing DyneSystems dyno controllers and most competitors' controls
  • LabVIEW™ compatible
  • Stand-alone operation supported
  • LCD diagnostic readouts display field current, input command, and PAU status and faults
  • 0 to +10 VDC control input
  • Dry contact and PCL-Level I/O
  • Rack-mount units up to 30A and 277 VAC
  • Wall-mount units up to 200A and 480 VAC
  • Advanced fault detection (e.g. blown fuse, incorrect transformer phasing and other wiring errors)
  • Integral safety inputs included
  • Simple setup and calibration

DS830 - The Intelligent Throttle Position PAU

Check out the new DS830 standalone Throttle Position PAU.

DS507 - The Original

This PAU has been discontinued, although support is still available for existing units.

pdf logoDyneSystems' original Universal Power Amplified unit, the DS507, was developed in the 1990's as a standalone unit. It is also designed specifically as an interface between the Dyn-Loc controller and the dyno, although it is compatible with any other controller that supplies a 0 to +10 VDC signal (except the DyneSystems Inter-Loc V - see DS820 below).

The DS507 is a Remote Power Amplifier Unit. It is not a controller and it has no control or data display capability. It is simply a fast response power supply for eddy current dynamometer coils, providing exactly the current required.

Full view of D S 507 universal eddy current power amplifier unitNeed help installing your DS507? Get instructions.

Each power amplifier provides field forcing and regeneration, greatly reducing the response time of an eddy current dynamometer. The power amplifiers include one DS506 Snubber board for noise suppression, and one SCR module.

Torque Measurement: DS507, along with a potentiometer, a Digital Strain Meter, and a Digital Speed Meter meets the requirements of measuring torque at a given speed at about one-half the cost of the closed loop solution.

For More Information

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