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Hayman Reese
1800 812 017
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49 Pacific Drive, Keysborough, VIC, 3173

Time vs Proportional Brake Controllers


June 25, 2014

Timed vs Proportional Brake Controllers

 

Australian road rules state that all trailers with a GTM exceeding 750kgs must have brakes. The most common heavy trailers operate an electro-magnetic trailer brake system which requires a brake controller to moderate the braking on your trailer. The voltage signal sent from the brake control unit to the electro-magnet is what controls how heavy or light the braking is applied. There are two distinct types of brake control units used to control this voltage and they are a Time or Ramp system or a Proportional system. Although the controller’s methods are different, both allow the user to adjust output or braking power & both have a pressure sensitive manual over-ride trigger that can be used to apply the trailer brakes independent of the vehicles brakes.

 

A Time delay brake control unit activates the trailers brakes by applying a varying voltage over a set time period. This is achieved by first setting the required power (voltage) setting and then adjusting the maximum time it takes to achieve this. This method of brake control requires a lot more user intervention as changing road conditions can determine the rate at which you need to stop requiring constant adjustment to the time and power controls. It is important to note that while time delay controllers are proven and robust in most applications, they do not provide the most efficient balanced braking. Key advantages of these units are their cost and ability to be mounted on any angle.

 

           

Compact 05550                           Sentinel  05300

 

A Proportional or motion sensing brake controller are enabled by the brake pedal switch and activated by a pendulum style circuit that senses the rate at which the vehicle is stopping and applies a proportional voltage to the trailers brakes. When this unit is correctly adjusted, the trailer will decelerate at the same speed as the tow vehicle. This increases braking efficiency and will overall reduce brake wear. A big advantage with this type of controller is its ability to operate well under adverse and changing braking conditions resulting in a smoother braking action.  

 

          

Guardian IQ 05900               Vinotour 05800

 

 

 

Hayman Reese
1800 812 017
info@haymanreese.com.au
49 Pacific Drive, Keysborough, VIC, 3173