DS820 / 830

Stand-Alone Combo Dynamometer and Throttle Power Amplifier Unit

Stand-Alone Eddy Current and Throttle Position Control

This is a combination unit consisting of both the DS820 Eddy Current Dynamometer and DS830 Stand Alone Throttle Power Amplifier Units. Individual LCD display panels allow both the Eddy Current and Throttle Power Amplifier Units to be set up independently. The Power Amplifier Unit is rack mountable in a 19” W x 3.5” H x 15” D enclosure with cooling fan and is shipped with one copy of its wiring diagram.

The DS820 Power Amplifier Unit supplies DC power to an Eddy Current dynamometer coil. The Power Amplifier Unit provides a current-regulated output that is proportional to a 0 to +10 VDC or 0 to 20 mA control input, which may be customer supplied or from a Dyne Systems controller. A current limiting potentiometer is included in the unit and the Power Amplifier Unit is set up for various dynamometer ratings.

The DS830 Stand Alone Throttle Amplifier Unit providing a solution that allows precise control of a Dyne Systems throttle actuator system through the use of standard analog and digital I/O connections.

  • Interfaces with all existing Dyne Systems dyno controllers and most competitors' controls
  • Stand-alone operation supported
  • LCD diagnostic readouts display field current, input command, and Power Amplifier Unit status and faults
  • 0 to +10 VDC or 0 to 20 mA control input
  • Dry contact and PCL-Level I/O
  • Rack-mount units up to 30A and 277 VAC
  • Advanced fault detection (e.g. blown fuse, incorrect transformer phasing and other wiring errors)
  • Integral safety inputs included
  • Simple setup and calibration
  • Includes control power transformer
  • An on-board CPU provides closed-loop position control, fault detection, and actuator zero and span functions.
  • Can be controlled from a large variety of common control systems via digital and analog I/O.
  • LCD displays actuator position, fault status, setup information, etc.
  • Internal capacitor bank contains sufficient stored energy to return actuator to the “zero” position in the event of a power failure.
  • Operation is consistent with existing Dyne Systems throttle position controllers.

  • Engine
  • Electric Motor
  • Transmission / Differential / Transaxle


  • 19” Rack x 3.5”h x 15”d

Control Power:

  • 120 V, 1.0 Amps
  • 50/60 Hz compatible

Power Amplifier Unit (Field) Power (maximum):

  • 277 V, 15 Amps

Environmental Limits:

  • Air Temperature: 0° to 40° C (104° F)
  • Relative Humidity: 0 to 95%
  • No condensation allowed
Throttle Actuator

Throttle Actuator

The Throttle Actuator consists of a completely enclosed DC motor combined with a planetary gear reduction and optical encoder. The integral planetary gear reduction provides ample torque for actuating the most demanding mechanical throttle systems while the optical encoder provides precise position feedback for optimum control. Combined with Dyne Systems closed-loop throttle controls, this throttle actuator provides precise, repeatable control for position, speed and load modes. Dyne Systems throttle control systems offer an additional level of test automation by eliminating the need for manual throttle actuation.

Throttle PAU Remote

Throttle Power Amplifier Unit Remote

The Throttle Power Amplifier Unit Remote pendant is required to calibrate any of our stand alone throttle systems. This allows the dynamometer technician to make adjustments to the throttle in close proximity to the device under test. The standard remote includes a 5 foot cable in Sealtight that is terminated to a MS connector and also includes a hanging handle which allows it to be conveniently located on the Actuator Stand (sold separately).

Actuator Stand

Actuator Stand

The Actuator Stand works in conjunction with our Actuator Base Plate to give a convenient mounting location for the actuator. All cabling is internal with an exit port at the bottom of the stand.

Actuator Base Plate

Actuator Base Plate

The Actuator Base Plate is a useful mounting platform for the actuator that includes an adjustable anchor point for the throttle cable.

Remote Connection Box

Remote Connection Box

The Remote Connection Box is used instead of the Actuator Stand and offers the same electrical connection points including a MS receptacle for the Throttle Power Amplifier Unit Remote that is used for calibration and setup. An extra MS connector shown is used as a jumper to complete the circuit to avoid a soft shutdown fault when the Throttle Power Amplifier Unit Remote is not connected.

Actuator Cable Assemblies

Actuator Cable Assemblies

Multiple cable assemblies are available depending on mounting configuration of the actuator. Cables come in variable lengths, terminated or non-terminated, and with or without Sealtight depending on the needs.