BENDIX BW2920 manual Section a System Overview System Components, Maintenance Tool

Section A - System Overview

1.0System Overview

1.1System Components

Maintenance

Hand tool

Tire Sensors

and Cradles

Harnesses
Stainless Steel
Tire Straps	Trailer-Link ECU

Figure 1 - System Components and Hand Tool

ECU. The Electronic Control Unit (ECU) of the SmarTire Trailer-Link™Tire Pressure Monitoring System receives data transmissions from individual tire sensors mounted on each trailer wheel. The information received is compared to user-defined settings. An alert is triggered if the system detects that a tire is under-inflated and/or above expected temperatures.

Where the tractor is equipped with Bendix™ SmarTire® TPMS, the data and alerts are communicated to a dash display along with the tractor tire information. Alternately, where the tractor is not equipped with a SmarTire TPMS system, the Trailer-Link system alerts the driver using an optional trailer-mounted lamp.

Sensors. Designed for the harsh environment of a commercial truck tire, each tire sensor is mounted in a break-away cradle for extra protection.

The tire sensor measures internal tire pressure and temperature every 12 (twelve) seconds and transmits data every three to five minutes. If the system detects a pressure change of 3 PSI (0.206 bar) or greater, it does not wait until the next transmission, but will transmit the data immediately.

Sensor Straps. Sensors are mounted to the surface of the rim using a stainless steel strap, a reliable and universal method of sensor installation.

Harness. Designed to not require a separate power supply, the harness supplies trailer ABS system power to the SmarTire Trailer-Link Tire Pressure Monitoring System ECU.

1.2 Maintenance Tool

Maintaining tires in the yard is just as important as real-time tire information for the driver, but many TPMS systems don’t include functionality to help yard maintenance personnel. The SmarTire universal hand tool acts like an “electronic billy-club” allowing maintenance personnel to wirelessly ‘ping’ each tire to measure its pressure and temperature. The SmarTire hand tool reduces diagnostic time and helps keep every tire rolling safely and cost- effectively. (For the Maintenance Tool manual, see BW2809.)

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