Air Throttles

Air Throttle

Air throttles are used to directly control the power output of engines. Air throttles are made in the following models:

Pulse Width Modulation (PWM) Throttles

This a microprocessor based product that converts control air pressure to pulse width modulation (PWM). Switch, 4-20mA, 0-9V/1-9V and RS 232 can also used as input to generate the PWM output signal. PWM is the required signal to throttle the CAT ECM from 0-100%. There is a serial interface provided to facilitate programming and setup. When multiple engines are chained together this throttle can be adjusted to even load distribution. This will also respond to serial commands to throttle the engine.

Analog Throttles

This a microprocessor based product that converts control air pressure to voltage (analog signal). Switch, 4-20mA, 0-9V/1-9V and RS 232 can also used as input to generate the analog output signal, which is the required signal to throttle the CAT ECM from 0-100%. There is a serial interface provided to facilitate programming and setup. This will also respond to serial commands to throttle the engine.

J1939 Throttles

To learn about J1939 Throttles, see our J1939 Products.

We also design and build Dual Air Throttle Control, Relay Throttle Transfer Module (6 Pole) for various customers.

Downloads (Product Data Sheets)

Instruction guide for each model of the DNFT is available for download. These files are in Adobe Acrobat (.pdf) format. These product data sheets are available to be printed out and reviewed for your convenience. You must view these downloads using Adobe Acrobat Reader, which is freely available to download at http://www.adobe.com.

Fast Internet Connections(pdf) Slow Internet Connections
Analog Air Throttle - Model 774 (5 pages) Analog Air Throttle - page 1 Analog Air Throttle - page 2
Analog Air Throttle - page 3 Analog Air Throttle - page 4
Analog Air Throttle - page 5
PWM-Air Throttle - Model 642 (2 pages) PWM-Air Throttle - page 1 PWM-Air Throttle - page 2
Analog Switch Throttle - Model 744 Analog Switch Throttle - page 1