WABCO TailGUARD System Description
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WABCO TailGUARD System Description

WABCO TailGUARD System Description

For truck & bus applications
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TailGUARD
TM
FOR TRUCK & BUS APPLICATIONS
SYSTEM DESCRIPTION

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Summary of Contents for WABCO TailGUARD

  • Page 1 TailGUARD FOR TRUCK & BUS APPLICATIONS SYSTEM DESCRIPTION...

  • Page 3: Table Of Contents

    Braking via a prepared interface for TailGUARD ........
  • Page 4 Deactivating TailGUARD via Trailer Remote Control ........

  • Page 5: General Information

    Important information, instructions and/or tips that you must always observe. Reference to information on the internet – Action step Ö Consequence of an action List „ Technical documents WABCO Customer Center http://www.wabco.info/i/1365 Please note that the publications are not always available in all language versions.
  • Page 6 26 = Norwegian, 27 = Slovenian, 28 = Finnish, 29 = Estonian, 30 = Latvian, 31 = Bulgarian, 32 = Slovakian, 34 = Portuguese (Brazil), 98 = multilingual, 99 = non-verbal Structure of the WABCO product number WABCO product numbers consist of 10 digits. Production date Type of device...

  • Page 7: Safety Information

    Adhere to all instructions, information and safety information to prevent „ injury to persons and damage to property. WABCO will only guarantee the safety, reliability and performance of their „ products and systems if all the information in this publication is adhered to.
  • Page 8 Safety information Avoid electrostatic charge and uncontrolled discharging (ESD): Note during construction and building the vehicle: Prevent potential differences between components „ (e.g. axles) and the vehicle frame (chassis). Make sure that the resistance between metallic parts of the „ components and the vehicle frame is less than 10 ohms. Establish an electrically conductive connection between moving or „...

  • Page 9: Summary Of The Safety Instructions From The Chapters

    The driver, however, remains fully responsible for vehicle movement and „ any damage that results from operating the vehicle. WABCO cannot hold liable for an accident that is caused despite of using „ this system; this is a support system only.
  • Page 10 In the case of EBS vehicles with brake intervention via separately „ installed valves, ABS functions are not available during TailGUARD braking. Even at the low speed range at which TailGUARD is active, the wheels might lock on slippery surfaces. Speed signal faults due to incorrect or unprofessional connection can „...
  • Page 11 Ultrasonic sensors must not to be mounted in a U-profile because this „ could cause reflections. WABCO recommends to mount the ultrasonic sensors mechanically protected to avoid damage. The ability to detect objects largely depends on the ultrasonic sensors' „ positioning on the vehicle. Make sure that the ultrasonic sensors are installed at a height of at least 40 cm.

  • Page 12: Introduction

    TailGUARD reduces stress for the driver while reversing and helps to avoid collisions with pedestrians, loading ramps, barriers, trees, forklifts, cars and other objects behind the vehicle.

  • Page 13: Vehicle Requirements

    Commercial vehicles with 12 V can be equipped if a permanent supply voltage of more than 11.5 V is ensured. TailGUARD is approved for application in vehicles of classes M3, N2 and N3 with compressed air systems in accordance with regulations in 71/320/EEC or ECE-R13.

  • Page 14: System And Function

    At speeds above 9 km/h the deceleration defined for TailGUARD may not suffice to stop the vehicle within the configured stopping distance. If the vehicle moves backward at 9 km/h or more, TailGUARD triggers short brake pulses to notify the driver of the excessive speed. TailGUARD here regulates the speed down to 7 km/h. If these warning brake actions are ignored and the speed continues to increase, the system is switched off at 12 km/h.

  • Page 15: Reverse Monitoring System

    TailGUARD can support up to 6 sensors. Each ultrasonic sensor monitors an area that is similar in shape to a flattened club. By arranging the ultrasonic sensors on the vehicle accordingly, objects near the roof area or the ground, for example, can also be identified.

  • Page 16: Autonomous Braking With Separate Valves

    5 .3 Autonomous braking with separate valves When TailGUARD detects an object, it can act on the compressed-air braking system of the vehicle, thus braking independently. Active braking is only permitted if the reservoir pressure on the brake valve (2) is at least 7.3 bar.
  • Page 17 System and function Brake intervention for vehicles with ABS ITEM DESCRIPTION Electronic Extension Module (electronic control unit) Brake valve Charging valve Pressure limiting valve Solenoid valve Solenoid valve Select High valve Pressure sensor Automatic load-sensing valve Trailer Remote Control...
  • Page 18 System and function Braking intervention for vehicles with EBS (braking via separate valves) ITEM DESCRIPTION Electronic Extension Module (electronic control unit) Charging valve Pressure limiting valve Solenoid valve Solenoid valve 2-way directional control valve Pressure sensor Trailer Remote Control Relay valve If the autonomous braking application is retrofitted, the system must be submitted to an acceptance procedure and an entry in the vehicle documents is required.

  • Page 19: Braking Via A Prepared Interface For Tailguard

    Vehicles with a prepared interface for TailGUARD: „ TailGUARD may not brake if the vehicle’s EBS system has a fault. Several vehicles from Daimler do not require an intervention into the pneumatic braking system. In addition, functional data such as speed, driving direction and distance to an object are electronically exchanged.

  • Page 20: Components

    Components Components 6 .1 Basic configuration for identification and warning and for braking intervention via a prepared interface for TailGUARD on the vehicle COMPONENT / PART NUMBER COMMENT Electronic Extension Module Control electronics „ 446 122 070 0 When used with autonomous braking: „...
  • Page 21 Use of signal lights instead of the Trailer Remote Control is not „ covered by the TÜV approval report. 449 535 100 0 Braking via a prepared interface for TailGUARD: „ see circuit diagram GIO13/14 Connector housing and cabling box The following additional connectors are required for use of the „...

  • Page 22: Extension For Autonomous Braking (Via Separate Valves)

    Components 6 .2 Extension for autonomous braking (via separate valves) COMPONENT / PART NUMBER COMMENT Charging Valve Permits autonomous braking only if sufficient reservoir pressure is „ available 434 100 033 0 Set pressure: 7.3 bar „ Pressure limiting valve Setting the braking pressure „ 475 010 313 0 Minimum set pressure: 3.2 bar „...
  • Page 23 441 044 101 0 Connection to GIO13 „ 2-way directional control valve Adjusts the TailGUARD braking pressure level in the braking system „ 434 208 027 0 "Solenoid valve" cable Connects one of the solenoid valves to the Electronic Extension „...

  • Page 24: Extension For Additional Buzzer

    „ Control 894 450 000 0 This extension is not possible for vehicles with a TailGUARD status lamp, as is the case with the prepared interface for TailGUARD in the Daimler Econic Euro 6, for example . Connecting cable for buzzer...

  • Page 25: Installation

    Download the outline drawing from the internet: „ Information on the Electronic Extension Module http://www.wabco.info/i/1488 Installation dimensions of the Electronic Extension Module in mm Mount the Electronic Extension Module vertically only, with the cable „...

  • Page 26: Notes On Installing The Cables / Dummy Caps

    Installation Once the cable has been installed, mount the cover again. „ Make sure that all catches are firmly in place. „ The open side must face in the direction of the 4-pin slots. „ 7 .2 Notes on installing the cables / dummy caps Observe the following safety instructions for handling cables: Water that enters the cable core or cable sleeve can damage electronic „...

  • Page 27: Notes On Installing The Ultrasonic Sensors

    The position and number of ultrasonic sensors are determined by the area to „ be monitored and the contour of the rear of the vehicle. The TailGUARD system can monitor a maximum of 6 ultrasonic sensors. „ Normally 15° ultrasonic sensors are used at the vehicle sides as the most „...
  • Page 28 Tail profiles, such as those of disposal vehicles, require tests by WABCO to rule out faults and malfunctions at a later stage. In such a case, please get in touch with your WABCO partner. The standard applications listed in the table below are suitable for vehicles with even rear sides.
  • Page 29 Installation FEATURES TailGUARD TailGUARD TailGUARDMAX ROOF Typical logistical Loading ramps and large Areas with restricted Areas with small and / or environment objects, such as palettes, heights: e.g. warehouses, moving objects: e.g. forklift vehicles and posts of loading gates, trees and...

  • Page 30: Tailguard

    Installation 7 .3 .1 TailGUARD – Mount the outside LIN ultrasonic sensors 446 122 450 0 (10°) inclined horizontally inwards. – If the middle sensor 446 122 450 0 (10°) is not exactly centred, mount it so that it is inclined in the direction of the farther away outer sensor.

  • Page 31: Tailguard Roof

    Installation 7 .3 .2 TailGUARD Roof – Mount the 5 LIN ultrasonic sensors horizontally in 2 levels. – Mount the outside LIN ultrasonic sensors 446 122 450 0 (10°) inclined horizontally inwards. – If the middle sensor 446 122 450 0 (10°) is not exactly centred, mount it so that it is inclined in the direction of the farther away outer sensor.

  • Page 32: Notes On Installing The Trailer Remote Control

    "Standard" mount. 7 .5 Notes on connecting the speed signal To avoid any accidents, observe the following safety instruction for vehicles with braking intervention through TailGUARD: Speed signal faults due to incorrect or unprofessional connection can „ significantly impair vehicle safety. Use of the speed signal is required for autonomous brake intervention.

  • Page 33: Notes On Controlling The Stop Lights

    Installation The valves can be grouped on a steel bracket or mounted directly on the „ frame. A sensible mounting point is near the rear axle so that line lengths to the braking system are kept short. Note the following restrictions: „...

  • Page 34: Start-Up

    A parameter set that has been prepared in advance for parameter setting will be sufficient in most cases and will simplify the start-up procedure considerably. Prepared parameter sets can be requested from your WABCO partner. Start-up using an already prepared parameter set requires PIN 2, which can be obtained by means of a successfully completed WABCO E-Learning course.

  • Page 35: Parameter Setting In Tebs E Diagnostic Software

    TEBS E diagnostic software via myWABCO. Please contact your WABCO partner if you have any questions. Vehicles with a prepared interface for TailGUARD: For systems with a prepared interface for TailGUARD in the vehicle, a parameter file (ECU file) is available that is preconfigured to the extent that only the sensor configuration needs to be adjusted. The file is stored in the default read directory of the Diagnostic Software when it is installed; the file name is "TailGUARD_Truck_and_Bus_ESA-R.ECU".

  • Page 36: Electronic Extension Module Pressure Test

    – In the TEBS E Diagnostic Software, click Measured values => TailGUARD. – In the TailGUARD window, click on the Begin start-upbutton – depending on the respective system configuration the positions of the ultrasonic sensors are assigned automatically or the TEBS E Diagnostic Software prompts you...
  • Page 37 Start-up Ö When the ultrasonic sensor was detected and the system is parameterised with automatic brake intervention, the stop lights flash and the next sensor to be learned flashes in the figure (window TailGUARD). – Briefly cover the ultrasonic sensor until it is detected by the system. To cover the ultrasonic sensors, a cover cap for drain pipes ("sleeve plug" HTM DN 75) is suitable, for example. Ö Now the next ultrasonic sensor that needs to be covered flashes on the diagnosis monitor.

  • Page 38: Reduced Eol Test

    Sensitive: High detection capability in close proximity (as delivered). „ Recommended sensor sensitivity for the upper sensor level with TailGUARDMAX and for TailGUARD with low sensor spacing ( < 1.5 m). Standard: The ultrasonic sensor sensitivity is reduced a little at close range „...

  • Page 39: Operation

    In the case of EBS vehicles with brake intervention via separately „ installed valves, ABS functions are not available during TailGUARD braking. Even at the low speed range at which TailGUARD is active, the wheels might lock on slippery surfaces. Speed signal faults due to incorrect or unprofessional connection can „...

  • Page 40: Instructing The Driver

    Vehicles with a prepared interface for TailGUARD: Activation is indicated by the measured object distance being displayed in the instrument panel. The driver will only be assisted by TailGUARD if the activation messages were signalled when the reverse gear was engaged.

  • Page 41: Deactivation Of The System

    „ button (pressing longer than 2 seconds) engaging the reverse gear twice within 1-3 seconds (configurable) „ a fault „ All deactivations are effective until the reverse gear is engaged again. 9 .4 Operation via the Trailer Remote Control ITEM DESCRIPTION Distance indication (colour bars) Preselection of buzzer volume Temporary TailGUARD deactivation Increase volume Decrease volume...

  • Page 42: Display

    – Select volume control by pressing button B (> 2 seconds) until the +/- buttons flash. – Press the +/- buttons to adjust the volume. 9 .4 .4 Deactivating TailGUARD via Trailer Remote Control – Press button C. Ö TailGUARD is deactivated until the reverse gear is engaged again.

  • Page 43: Distance Indication

    Activation check after reverse gear Progress bar indicates from is engaged the distance in cm Standard fault – first indication for Red and Yellow on TailGUARD activated via reversing Beeper on for 3 s lamp Standard fault – second indication Red and Yellow flash for after reverse gear is disengaged 60 s...

  • Page 44: Detection Of Malfunctions

    A malfunction is indicated by a red and yellow LED bar flashing or being lit on the Trailer Remote Control. Additionally, the buzzer of the Trailer Remote Control signals a beep tone for 3 seconds. TailGUARD is now no longer ready for operation. A fault is also present when the Trailer Remote Control provides no feedback at all by means of colour bars or buzzer when the reverse gear is engaged.

  • Page 45: Workshop Notes

    In the case of a TailGUARD fault message or failure of the indication for operational readiness to appear (Chapter "9 Operation", page 39) after longer periods of being stationary with the ignition turned on, the vehicle must be driven ahead a short distance until TailGUARD detects the speed signal.

  • Page 46: Disposal / Recycling

    Observe the national and regional regulations. „ Defective WABCO brake units can be returned to WABCO to „ guarantee the best possible processing. Simply contact your WABCO partner if you have any „...

  • Page 47: Appendix

    Please note that the circuit diagrams are not always available in all language versions. CIRCUIT DIAGRAM CIRCUIT DIAGRAM NO . Complete TailGUARD system with all options for 841 802 340 0 vehicles with ABS system. TailGUARD system with autonomous brake intervention for vehicles with ABS system in 841 802 341 0 accordance with TÜV approval report.
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  • Page 59: Pin Assignment "Electronic Extension Module

    Rear outline marker lamps / Stop light right output Rear outline marker lamps / Stop light right input GIO13, 4-pin code B Braking via separate valves: Pressure sensor supply Braking via a prepared interface for TailGUARD: Brake Relay Ground Braking via separate valves:...
  • Page 60 Appendix CONNECTIONS ELECTRONIC EXTENSION MODULE GIO14, 4-pin code B TailGUARD status lamp / additional external buzzer Ground Analogue input 1, additional TailGUARD Off button or alternative input reverse gear signal (see separate circuit diagram 841 802 342 0) GIO15, 4-pin code B Reverse signal light (optional) Ground Reverse signal light (optional)

  • Page 61: Checklist Tailguard Truck & Bus

    Trailer operation (requires shielding the Trailer Remote Control for the towing vehicle) It should be possible to deactivate TailGUARD on the towing vehicle manually if the trailer is hitched. TailGUARD on the towing vehicle should be deactivated automatically if the trailer is hitched Stop light control with TailGUARD intervention Stop light is activated through TailGUARD.
  • Page 62 Access to the C3 signal is accepted by the vehicle manufacturer or is documented in his system description. A pneumatic circuit diagram is available for optimum integration in the pneumatic system. All threaded connections required to integrate TailGUARD into the existing pipe system are available in accordance with vehicle manufacturer’s specifications.
  • Page 64 The world's leading vehicles. Founded about manufacturers of trucks, buses 150 years ago as Westinghouse and trailers rely on WABCO's Air Brake Company, WABCO cutting edge technologies. is committed to an increasingly Powered by its vision for...

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