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Related Manuals for WABCO TAILGUARD
Summary of Contents for WABCO TAILGUARD
- Page 1 TAILGUARD™ FOR REFUSE COLLECTION VEHICLES...
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Page 3: Table Of Contents
Why use TailGUARD™ and not a camera system? ....... . . -
Page 4: Introduction
Introduction Introduction This description is mainly intended for persons who want to plan the installation of TailGUARD™ in refuse collection vehicles and carry out the installation. TailGUARD™ is a system for monitoring the area behind vehicles which is automatically activated when reverse gear is engaged. TailGUARD™ was initially developed for trailers. The system is also installed on towing vehicles and buses for monitoring the area behind the vehicle when reversing with the aid of ultrasonic sensors. If the system detects an obstacle in the intended path of travel, it acoustically and optically indicates the distance to the driver. When the vehicle reaches a defined minimum distance to the object, the vehicle can be stopped by an automatic actuation of the braking system. Refuse collection vehicles frequently in reverse gear The system is particularly useful on refuse collection vehicles since they are often forced to cope with both shorter and comparatively long distances in reverse gear, for instance in cul-de-sacs where there is insufficient space for turning around. In situations like this, the driver has to negotiate longer distances over which he is partially unsighted when looking in the rear-view mirrors. This means that he may overlook obstacles in the road or people crossing over behind the refuse collection vehicle. Another special scenario: constant presence of people in the area behind the vehicle There is another important reason for installing a reverse monitoring system. In the case of most refuse collection vehicles, people are constantly working behind the vehicle who have to manoeuvre the refuse containers to the respective lifting and tipping mechanism, and then hook them into position before they are lifted and emptied. It often happens that refuse collections cannot stop the vehicle in time due to carelessness or a sudden health impairment. This regularly results in serious accidents and several deaths every year. This can be prevented to a large extent by... - Page 5 Introduction Special challenges with refuse collection vehicles In contrast to conventional towing vehicles or buses, most refuse collection vehicles have protruding lifting and tipping mechanisms and other auxiliary devices fitted to the back of the vehicle. This can make it difficult to find suitable locations for installing the ultrasonic sensors. For instance, the refuse collection devices on the back of the vehicle must not be wrongly identified as being objects in the area behind the vehicle. The sensors must also be installed with especially effective protection so that they are not damaged during the daily rigours of collecting refuse. Despite all these factors, they must be able to reliably sense the monitoring area behind the vehicle. Further challenges arise with the cable routing. Here, it must be considered what movements are made by the attached devices for filling and emptying the vehicle so that the sensor cables can be routed in a correct manner. This description contains important information explaining how you can master these challenges.
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Page 6: Safety Information
Safety information Safety information General safety instructions Observe all required provisions and instructions: Read this publication carefully. „ 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. Always abide by the vehicle manufacturer's specifications and instructions. „ Observe all accident regulations of the respective company as well as „ regional and national regulations. Make provisions for a safe work environment: Only trained and qualified technicians may carry out work on the vehicle. „ Use personal protective equipment if required (protective goggles, „ respiratory protection, ear protectors, safety shoes). Pedal actuations can lead to severe injuries if persons are in the vicinity of „... - Page 7 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 „ insulated vehicle parts, such as axles, and the frame. Prevent potential differences between the towing vehicle and the trailer. „ Make sure that an electrically conductive connection is made between „ metal parts in the towing vehicle and the coupled trailer via the coupling (king pin, fifth wheel, claws with pins), even without a cable being connected. Use electrically conductive bolted connections when fastening the „ ECUs to the vehicle frame. Run the cable within metallic casings where possible (e.g. inside the „ U-beam) or behind metal and grounded protective plating to minimise the influence of electro-magnetic fields. Avoid the use of plastic materials if they can cause electrostatic „ charging. While carrying out repair or welding work on the vehicle, observe the following: Disconnect the battery (if installed in the vehicle). „ Disconnect cable connections to devices and components and protect „...
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Page 8: Summary Of The Safety Instructions From The Chapters
TailGUARD: Because the stopping distance becomes longer with heavily laden vehicles „ - in particular when it is equipped with EBS - the settings (parameter setting / pressure limiting valve) must enable sufficient deceleration for the fully laden vehicle. Note pulsed braking when reversing too fast: „ TailGUARD can assist only with reversing speeds below max. 9 km/h. „ TailGUARD will trigger short brake pulses when a critical speed is „ reached to alert the driver. If the driver accelerates further, TailGUARD deactivates itself and „ outputs a fault message. 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 „ significantly impair vehicle safety. Vehicles with a prepared interface for TailGUARD: TailGUARD may not „ brake if the vehicle’s EBS system has a fault. - Page 9 Fasten the cable ties so that the cable is not damaged. „ When using tools, please note the instructions of the cable-tie „ manufacturer. If the cables are too long, do not wind them up but lay them in loops. „ Observe the following safety instructions for handling ultrasonic sensors: The surface to which the ultrasonic sensor is mounted must be even and „ must be at least 2 mm larger than the ultrasonic sensor (this is required to protect the drainage holes in the rear against direct high-pressure cleaning). 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. No other vehicle components should be installed within the ultrasonic „ sensor's range of vision. The rate of detection depends on object surfaces: „ Ultrasound is best reflected by smooth surfaces that are positioned at a „ right angle to the sound's direction. Small and unfavourable surfaces such as meshed structures, furry „...
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Page 10: Tailguard
TailGUARD™ systems and putting them into operation, even where TailGUARD™ is installed in the towing vehicle or bus. The diagnostic software automatically detects this when the system starts up and switches to the appropriate mode. Two different systems are available with TailGUARD™ for trailer vehicles: With TailGUARDlight™, two ultrasonic sensors are used to measure the actual distance to the loading ramp. The „ system does not monitor the entire area behind the vehicle, but is only an aid for approaching the ramp. The other three TailGUARD™ variants are systems for monitoring the area behind the vehicle. WABCO „ recommends a minimum system of three sensors on the same level (the variant TailGUARD™). With the TailGUARD ™ variant, for example, a roof over the ramp can be detected by two extra ultrasonic sensors ROOF mounted on an additional upper level. A rear area monitoring system can be realised with the aid of six ultrasonic sensors on two levels (TailGUARDMAX™) which is also capable of detecting smaller objects behind the vehicle. The most detailed description of TailGUARD™ for trailer vehicles can be found in the TEBS E system description. You can download the latest version in WABCO INFORM under the product number 815 010 093 3. TailGUARD™ for Truck & Bus With TailGUARD™ for towing vehicles and buses, the same sensor is used for the trailer vehicles which is used to monitor the area behind the vehicle. The most significant difference concerns how the system is integrated in the vehicle electrical system, and how an automatic braking action is realised when the configured minimum distance to an obstacle is reached. Here, TailGUARD™ for Truck & Bus supports various possibilities, which are concisely explained in this description. A detailed description of the system, together with a more precise description of the overall system, „ a list and description of the required components, „ installation instructions, „ a description of how the system is put into operation, „ operation by the driver, „ maintenance and diagnosis instructions for workshops, „... -
Page 11: Tailguard™ For Refuse Collection Vehicles
TailGUARD™ for refuse collection vehicles TailGUARD™ for refuse collection vehicles General functional principles To avoid any accidents, observe the following safety instructions for vehicles with braking intervention through TailGUARD: Vehicles with a prepared interface for TailGUARD: TailGUARD may not „ brake if the vehicle’s EBS system has a fault. The general functional principles of the system correspond to those of TailGUARD™ for Truck & Bus: TailGUARD™ is activated when reverse gear is engaged. - Page 12 TailGUARD™ for refuse collection vehicles Here, – three green LEDs stand for distances between 450 and 300 cm, – three yellow LEDs stand for distances between 300 and 150 cm, – and three red LEDs stand for distances between 0 and 150 cm. – The red LEDs also have two different states: ▪ If the corresponding LED flashes, the distance is about 50 cm. ▪ If the LED lights up continuously, the distance is approx. 25 cm or less. The Trailer Remote Control also emits acoustic signals via a built-in buzzer. Similar to parking aids familiar from passenger cars, this signal is emitted at ever shorter intervals, through to a continuous tone, when approaching an object behind the vehicle. Note: The display and control unit is called a "Trailer Remote Control" because it was introduced with TailGUARD™ for trailer vehicles, and because here it is the identical unit. In this configuration, however, the device has nothing to do with trailer operations. In certain countries, objects behind the vehicle can also be displayed by a corresponding flashing of the vehicle's rear outline marker lamps instead of via the Trailer Remote Control. • Second variant: Usually, it is reasonably required that the system – in addition to the display and warning function – also automatically stops the reversing vehicle when it reaches a certain preconfigured stopping distance. For this purpose, the vehicle is autonomously braked via additionally fitted pneumatic valves. These valves are controlled by the Electronic Extension Module. The amount of controlled braking pressure is also dependent upon the actual vehicle speed so that the stopping distance can be adhered to safely. For this reason, the Electronic Extension Module receives the speed signal from the vehicle via a corresponding connection cable. The Electronic Extension Module must also be connected to the vehicle electrical system with other special cables, for example to control the stop lights during an autonomous braking action. Third variant: Here, autonomous braking is effected by the vehicle's own service brake rather than with the aid •...
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Page 13: Why Use Tailguard™ And Not A Camera System
TailGUARD™ for refuse collection vehicles Why use TailGUARD™ and not a camera system? At first glance, a camera that provides the driver of a refuse collection vehicle with an optical image of the area behind the vehicle would appear to be superior to the ultrasonic-based detection principle used by TailGUARD™. On closer consideration, however, TailGUARD™ offers decisive benefits, particularly where refuse collection vehicles are concerned: A camera system requires good light conditions. Adequate lighting is only available during daylight hours, however. „ TailGUARD™, on the other hand, always functions equally well whatever the conditions: in daylight, at dawn and dusk, and even in the dark. With a camera system, while reversing the driver must always keep an eye on both the monitor with the detailed „ camera image and the rear-view mirror. This divided attention creates additional stress, and can lead to mistakes in recognising the situation behind the vehicle. With TailGUARD™, as well as a simple optical signal, the driver is alerted by additional acoustic warning signals. This enables the driver to visually focus on the rear-view mirror. With a camera system, the driver must himself identify any relevant objects in the camera image. The „ TailGUARD™ system automatically recognises both moving and stationary objects. TailGUARD™ also detects and measures the distance to objects in the immediate vicinity of the rear of the vehicle, „ and indicates the distances between them, which is something that camera-based systems are not capable of. With a camera system, the driver has to actively decide when to brake and then perform the action. TailGUARD™ „ on the other hand, can autonomously brake the vehicle when it approaches an object. While the cameras optics need to be regularly cleaned, TailGUARD™ does not require any maintenance. „ Retrofitting TailGUARD™: Requirements for the refuse... - Page 14 TailGUARD™ for refuse collection vehicles Type of braking system: „ • Conventional braking system without ABS: the vehicle can be fitted with TailGUARD™. In this case, the braking pressure generated separately by TailGUARD™ is fed into the input of the relay valve or the automatic load- dependent brake power regulator (LSV controller). • Vehicle with ABS: TailGUARD™ is approved for all ABS systems. • Vehicle with EBS: – TailGUARD™ is approved for vehicles fitted with WABCO EBS. – For vehicles with non-WABCO EBS, a conversion beforehand to WABCO EBS is recommended. Speed signal: „ • A speed signal in accordance with ISO 16844-2 (C3 signal) must be provided in the vehicle. • The vehicle manufacturer must not have prohibited use of this signal for external systems. Expert approval: „ • If the vehicle is to be braked autonomously when approaching objects behind it, and if it is being operated in public areas, it must be inspected by an expert after the conversion (at least in Europe) in compliance with the ECE-R13 standard. • A basic expert assessment is available from WABCO which confirms conformity with ECE-R13 provided the system is installed correctly. This means that it is then only necessary to have the individual vehicle inspected by an expert for correct installation. More detailed information regarding the requirements for the vehicle can be found in Chapter 4 of the system description for TailGUARD™ for Truck & Bus.
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Page 15: Required Components: Overview
If the driver accelerates further, TailGUARD deactivates itself and „ outputs a fault message. 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 „ significantly impair vehicle safety. Vehicles with a prepared interface for TailGUARD: TailGUARD may not „ brake if the vehicle’s EBS system has a fault. Variant: Only monitoring and warning If TailGUARD™ is only to be used for monitoring and warning purposes (see Section 4.1, first variant), the following components are required: 2 to 6 ultrasonic sensors depending on your own requirements, as well as the number of installation locations that „ are possible on the refuse collection vehicle in question. The appropriate extension and splitter cables for connecting the ultrasonic sensors to the Electronic Extension „ Module. -
Page 16: Variant: Autonomous Braking Via Separate Valves
Required components: Overview A GIO cable, with which the ECU taps the power supply for the reversing light. This enables the system to „ detect when reverse gear is engaged, so that it then activates the monitoring of the area behind the vehicle with TailGUARD™. A diagnostic socket. This is installed in an easily accessible position outside of the vehicle and is connected to „ the ECU with its cable. The diagnostic socket is used for configuring the system's parameters and putting it into operation, as well as for diagnosing malfunctions. Additional optional components, such as a monitoring off-switch, an extra buzzer and indicator lamps, can be „ connected to additional GIO sockets in the ECU. Variant: Autonomous braking via separate valves With this variant, the following line links are required in addition to the preceding variant: A cable via which the ECU receives the vehicle speed signal. This cable is routed either directly to the vehicle „ tachograph, or to an interface provided by the vehicle manufacturer in accordance with ISO 16844-2 ("C3 signal", also called a "B7 signal"). The other cable wires are not used and must be isolated. The speed signal is required by the ECU in order to be able to match the applied braking pressure to the actual speed of the vehicle. Other wires of the universal cable (which is only used with the first variant for tapping the power supply to „ the reversing light) are used to connect the two stop lights so that they can be supplied with power during an autonomous braking action. Which additional valves, sensors and line links have to be installed so that an autonomous braking action can be executed when approaching an object behind the vehicle will depend upon the braking system of the vehicle in question. This is how the system functions on vehicles equipped with an ABS braking system:... -
Page 17: Separate Valves For Vehicles With An Abs Braking System
Required components: Overview 5.2.1 Separate valves for vehicles with an ABS braking system When the driver actuates the braking valve (2) on a towing vehicle equipped with an ABS braking system, the braking pressure for the rear axle reaches the control input of the LSV regulator (9), which then adapts the braking pressure to the load status of the vehicle. Its output pressure reaches the Tristop cylinders at the rear axle via the two ABS solenoid valves (10). To additionally enable autonomous braking actions, the standard configuration of this part of the ABS braking system is extended with TailGUARD™ as follows: Supply pressure for the rear axle is passed on via a branch line to an appropriately set charging valve (3). The „ effect of this is that autonomous braking is only possible at a sufficient supply pressure of at least 7.3 bar. From here, the pressure reaches a pressure limiting valve (4). This makes it possible to set the maximum braking „ pressure that can be generated for an autonomous braking action. In the case of refuse collection vehicles, a maximum braking pressure of approx. 3.8 bar has frequently proved to be most effective. The braking pressure then passes through two solenoid valves (5) and (6) that are connected in series. These are „ controlled by the ECU (1), and enable modulation of a braking pressure that is adapted to the vehicle speed. The series circuit ensures that the vehicle is only braked when both valves are actuated. This prevents an autonomous braking action from being triggered due to an electrical fault. The modulated braking pressure is fed into the control input of the LSV regulator (9) via a two-way valve (7). From „ here, the output pressure reaches the Tristop cylinders of the rear axle in the usual manner. The braking pressure is also measured by a pressure sensor (8) that is likewise connected to the ECU (1). -
Page 18: Separate Valves For Vehicles With A Conventional Braking System
Required components: Overview 5.2.2 Separate valves for vehicles with a conventional braking system On vehicles equipped with LSV regulators but without an ABS system, autonomous braking is effected in the same manner as for vehicles fitted with an ABS braking system. In the system diagram (see 4.2.1), only the two ABS solenoid valves (10) are missing. On vehicles with a conventional braking system without an LSV regulator, the output pressure is instead fed into the control input of the conventional relay valve via a two-way valve. 5.2.3 Separate valves for vehicles with an EBS braking system When the driver actuates the brake signal transmitter (not shown here) on a towing vehicle with an EBS braking system, the braking pressure is applied directly to the Tristop cylinders from the outputs of the axle modulator (2) in the usual manner. -
Page 19: Variant: Autonomous Braking Via A Prepared Interface For Tailguard
Variant: Autonomous braking via a prepared interface for TailGUARD™ To avoid any accidents, observe the following safety instructions for vehicles with braking intervention through TailGUARD: Vehicles with a prepared interface for TailGUARD: TailGUARD may not „ brake if the vehicle’s EBS system has a fault. With this variant, separate valves do not have to be installed because the autonomous braking actions are effected using the existing EBS service brake system of the towing vehicle. -
Page 20: Installation Of The Ultrasonic Sensors
Installation of the ultrasonic sensors Installation of the ultrasonic sensors Observe the following safety instructions for handling ultrasonic sensors: The surface to which the ultrasonic sensor is mounted must be even and „ must be at least 2 mm larger than the ultrasonic sensor (this is required to protect the drainage holes in the rear against direct high-pressure cleaning). 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. No other vehicle components should be installed within the ultrasonic „ sensor's range of vision. The rate of detection depends on object surfaces: „ Ultrasound is best reflected by smooth surfaces that are positioned at a „ right angle to the sound's direction. -
Page 21: The Three Standard Applications
Installation of the ultrasonic sensors The three standard applications The following three sensor configurations are the standard applications for TailGUARD™ for Truck & Bus: The following conditions apply here: 15° sensors are installed as the respective exterior sensors. A 15° bend in their housings cause them to point „ slightly inwards towards the middle of the vehicle. They monitor the area between the outer edge and the middle of the vehicle. Using the outer edge of the vehicle as a detection limit is crucial to allow parked vehicles or other obstacles that are close to the path of travel to be passed unhindered, and to prevent them from being identified as objects behind the vehicle. A third ultrasonic sensor with a straight housing (0°) is positioned in the middle of the vehicle for better monitoring „ of this area. All the ultrasonic sensors have a club-shaped, relatively flat detection field. „ If a sensor is installed upright, it monitors a horizontal plane at the height of its installation position. „ If it is installed in a horizontal position, it monitors a vertically oriented plane. This enables it to also detect objects „ behind the vehicle that are considerably above or below its installation height. Further details about the standard installation of the ultrasonic sensors can be found in Section 7.3 of the system description for TailGUARD™ for Truck & Bus. -
Page 22: Positioning Of The Sensors On Refuse Collection Vehicles
Installation of the ultrasonic sensors Positioning of the sensors on refuse collection vehicles Observe the following safety instructions for handling cables: Water that enters the cable core or cable sleeve can damage electronic „ control units. Cables with open ends should therefore always be connected in the driver’s cab to ensure that no water can enter them. Where this is not possible, use a suitable cable joint box, e.g. AK 190. This applies in particular when using the prepared brake interface on the Daimler Econic Euro6. Plan your installation position so that cables cannot become kinked. - Page 23 Installation of the ultrasonic sensors On this vehicle, four sensors were installed on two planes: two sensors on the lower plane underneath the lifter in the driving position, together with two sensors directly underneath the bin deflectors as an upper plane. All the sensors were installed upright, meaning that objects are detected on two horizontal planes. A middle sensor in the lower level has been dispensed with here, although an installation in an upright position would appear to be possible here. In this case, two sensors form the lower plane directly underneath the bin deflectors, with two more sensors above them on the upper plane. The upper sensors are installed in a horizontal position. This results in a total of two horizontally and two vertically oriented measuring areas.
- Page 24 Installation of the ultrasonic sensors In this case, the two ultrasonic sensors underneath the bin deflectors form the upper detection plane, while the three sensors are mounted underneath the lifters. These are located here in the driving-off position. All the sensors are installed in an upright position. Generally speaking, the following installation rules of thumb have proved effective: The ultrasonic sensors should be installed wherever possible at the rear end of all the attached mechanisms so „ that no parts of them protrude into the measuring area of the sensors. The best solution has often proved to be to install a sensor directly underneath each bin deflector (assuming that „ the lifting and tipping mechanism is fitted with such deflectors). This location is not always suitable, however. In the case of systems that just have a loading position (i.e. without a driving-off position), it is often only possible to „ install two sensors on one main level. If sensors are only installed on one main level, they should be mounted wherever possible at a height of between „ 50 and 90 cm above the road surface. The distance between the two (outer) sensors on the main level should be at least 1.50 metres. „ In the case of systems with a driving-off position, an additional level with two to three further sensors can frequently „ be realised. Where sensors have been installed on two planes, the bottom edge of the sensors on the lower plane should be at „ least 40 cm above the road surface. Otherwise, ramps or curbs will be mistakenly detected as being objects behind the vehicle when it drives over them. In the case of a lower additional level, the outer 15° sensors should be mounted within the treads for the refuse „ collectors (if present) so that they are not in the measuring area. The distance between the two (outer) sensors of a lower additional level should be at least 1.20 metres. „ Here is a general note on the size and form of the measuring areas of the ultrasonic sensors: The club-shaped „ measuring area of an upright installed sensor is approx. 1.20 metre wide and approx. 20 cm high (namely the installation height of the sensor +/- 10 cm) at a distance of 1 metre.
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Page 25: Testing The Sensor Positions
Installation of the ultrasonic sensors Testing the sensor positions In the case of lifting and tipping mechanisms for which there are no empirical values regarding the positioning of the ultrasonic sensors, potential sensor positions should be tested wherever possible before permanently installing them. Since some special situations offer no suitable installation positions whatsoever, in case of doubt these tests should be carried out as early as possible, especially before installing components for the autonomous braking system. The best way to test the installation positions is as follows: The ultrasonic sensors are temporarily fastened in place at the intended installation locations with velcro fasteners „ or adhesive tape, or using suitable clamps. The Electronic Extension Module is also only installed temporarily. „ The ultrasonic sensors are connected directly to the ECU without the final cable routing „ The ECU is supplied with power via the power cable. „ The diagnostic socket is connected to the ECU. „ The multi-core cable which carries the signal indicating that reverse gear has been engaged is connected as usual „ to the GIO 12 slot on the ECU. The other end, however, is not yet connected to the reversing lamp. All that is required is to connect the wire with the pink insulation to a 24 V power supply to deliver the signal for the engaged reverse gear to the ECU. The system can now be started up with the aid of the TEBS E Diagnostic Software. The "Braking" option must be „ deactivated: After the system has successfully started up, it attempts to teach the connected ultrasonic sensors at their actual „ installation positions. If this fails because reflections are being permanently detected, the relevant installation positions have to be optimised or different ones have to be found. -
Page 26: Protection Against Damage
Installation of the ultrasonic sensors Protection against damage Once suitable mounting positions have been found for the ultrasonic sensors, they must be installed in these locations in such a way that they are well protected against damage during the daily rigours of collecting refuse. Here are some solutions that have proven effective: Here, the ultrasonic sensor is mounted with a retaining plate on the bin deflector, which at the same time effectively protects the ultrasonic sensor against damage. With this method, the ultrasonic sensor is integrated into the retaining plate for the rear lights. These photographs show the massively designed holders for the ultrasonic sensors as used by the German company FAUN Umwelttechnik GmbH & Co. KG, a manufacturer of refuse collection vehicles. Such enclosed holders should have a hole in the bottom to allow rainwater to drain. -
Page 27: Cable Routing
Installation of the ultrasonic sensors Cable routing The sensor cables must not be laid loosely, but must be securely fastened at short intervals. In the absence of any adequate fastening possibilities, new fastening points have to be created, for example (as shown here) by welding on round bars to which the cables can be fastened with cable ties: The plug-in couplings of the sensor cables should be installed in protected areas, for example behind a cover of the lifting and tipping mechanism as shown here:... - Page 28 Installation of the ultrasonic sensors If the sensor cabling is attached to moving parts, the cables at the transition points must be able to follow all the movements, for example on the joint axis of the lifting and tipping mechanism when it is fully raised for emptying the refuse collection vehicle: Photo credit: Petra Hoeß, FABION Markt + Medien / abfallbild.de At such joints, as for the rest of the cable routing, the sensor cables should be fastened wherever possible to the existing cables installed by the manufacturer of the superstructure:...
- Page 29 Installation of the ultrasonic sensors In the area in front of the lifting and tipping mechanism, the joint sensor cable is routed to the Electronic Extension Module with the aid of cable ties. The same applies for all the other cables. These are usually routed from the exit point in the driver's cab along the vehicle frame to the ECU.
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Page 30: Connecting Tailguard™ To The Vehicle Electrical System
Connecting TailGUARD™ to the vehicle electrical system Connecting TailGUARD™ to the vehicle electrical system Observe the following safety instructions for handling cables: Water that enters the cable core or cable sleeve can damage electronic „ control units. Cables with open ends should therefore always be connected in the driver’s cab to ensure that no water can enter them. Where this is not possible, use a suitable cable joint box, e.g. AK 190. This applies in particular when using the prepared brake interface on the Daimler Econic Euro6. -
Page 31: Variant: Only Monitoring And Warning
Connecting TailGUARD™ to the vehicle electrical system Variant: Only monitoring and warning As described in Section 5.1, both the Electronic Extension Module and the Trailer Remote Control have to be connected to the respective vehicle contacts in the electronics compartment. Here is the documentation for each of these connections, together with the WABCO product numbers (blue) for the required components: The ultrasonic sensors are connected using special splitter and extension cables. The documentation for the required cables and the product numbers can be found in the annex of the system description of the TailGUARD™ for Truck & Bus, as shown for example in the circuit diagram 841 802 343 0, which describes this TailGUARD™ variant in more depth. This also shows how other optional components can be connected to the ECU, namely another buzzer, an additional switch for deactivating the monitoring of the area behind the vehicle, a status lamp for TailGUARD™, as well as a separate warning lamp for signalling malfunctions of the TailGUARD™ system. -
Page 32: Variant: Autonomous Braking Via Separate Valves
Connecting TailGUARD™ to the vehicle electrical system Variant: Autonomous braking via separate valves Here is the documentation for the connections if TailGUARD™ should also autonomously brake the vehicle when objects are detected behind it with the aid of separately fitted valves (see Section 5.2):... -
Page 33: Actuation Of The Stop Lights
Connecting TailGUARD™ to the vehicle electrical system 7.2.1 Actuation of the stop lights According to a German technical inspection report (TÜV) on TailGUARD™, during an autonomous braking action the ECU supplies power to the back-up light. For this purpose, the power supply to the reversing lamp must be adequately dimensioned and fused. If it is not possible to supply the stop lights via the reversing lamp, they can also be supplied via terminal 15, for example. To do this, in the TEBS E Diagnostic Software it is necessary to enable the option "No stop light supply via reversing lamp" (up to Diagnosis V5.00) or "Reversing signal input to reversing lamp at GIO 14-3" (from Diagnosis V5.10), and the reversing signal has to be connected via terminal GIO14, pin 3. Further details can be found in Section 7.7 of the system description for TailGUARD™ for Truck & Bus. 7.2.2 Connecting with the electrical compartment To avoid any accidents, observe the following safety instruction for vehicles with braking intervention... -
Page 34: Interface Connector
Connecting TailGUARD™ to the vehicle electrical system 7.2.3 Interface connector The wires of the cables coming from the ECU can be directly connected to the respective contacts in the electronics compartment. However, the installation will be considerably more flexible and clearer when using an interposed interface connector. Here is an example for the pin assignment of a suitable AMP plug:... -
Page 35: Variant: Autonomous Braking Via A Prepared Tailguard™ Interface
Variant: Autonomous braking via a prepared TailGUARD™ interface The ECU is connected as follows to a TailGUARD™ interface already installed by the vehicle manufacturer: In the case of the first such series, the Econic Euro 6, three plug housings with the following Mercedes-Benz part numbers are required to connect the ECU: A056 545 57 28 (X1), A030 545 88 28 (X2) and A007 545 46 26 (X3). The display of the distance information, the optical and acoustic warning, and the controlling of other components, are shown here in a lighter colour as these functions are only implemented in the vehicle. -
Page 36: Installation Of The Separate Valves
Installation of the separate valves Installation of the separate valves Observe the following safety instructions for interventions in the braking system: Observe the specifications of the vehicle manufacturer. „ Deactivation when the supply pressure is too low: Switch the system off if „ the vehicle's supply pressure is too low. Only intervene with the braking system if you have sufficient knowledge of „ the braking system and know and can take responsibility for the effect of your actions and all their consequences. The braking system is under pressure. Before intervening with the braking „ system, make sure all reservoirs and lines are pressureless. With braking intervention via separately installed valves, the front axle „ must not be braked. Make sure that the vehicle's front axle can NOT be braked by the system. Braking intervention must only occur via the rear axle(s). - Page 37 Installation of the separate valves The two solenoid valves should be mounted upright as shown here. The air bleeders of the installed valves must „ point towards the ground. The prescribed nominal widths for the connections between the pneumatic components must be adhered to. Some „ connecting line lengths should also not exceed stipulated maximum lengths. This and further information about the pneumatic part of TailGUARD™ can be found in Section 7.7 of the system description for TailGUARD™ for Truck & Bus.
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Page 38: Planning And Performing The Tailguard™ Installation
Planning and performing the TailGUARD™ installation Planning and performing the TailGUARD™ installation The installation of TailGUARD™ should be planned in advance with the aid of a checklist provided by WABCO. This checklist can be found in Section 11.3 of the system description for TailGUARD™ for Truck & Bus. Based on the information given in the checklist, „ informative photographs, in particular of the lifting and tipping mechanism of the respective refuse collection „ vehicle, as well as the measurements for the intended positions of the ultrasonic sensors, „ WABCO prepares an individual set of parameters for TailGUARD™ that can be loaded into the Electronic Extension Module using the TEBS E Diagnostic Software. To be able to write this set of parameters to the ECU, a PIN 2 is required as access authorisation for this protected function. A PIN 2 authorisation can be acquired by taking the two e-learning courses "Trailer EBS E" (WABCO product number: 200 300 104 0) and „ "Trailer EBS E1 to E2" (WABCO part number: 200 300 114 0) „ and completing them successfully. - Page 39 Planning and performing the TailGUARD™ installation After installing the components and configuring the parameters for the ECU with the aid of the parameter set provided by WABCO, the system is put into operation with the TEBS E Diagnostic Software. In some cases, it may be necessary to first experimentally determine the appropriate mounting positions for the ultrasonic sensors during installations so changes can be made. The TailGUARD™ parameterisation must then be adapted accordingly in each case. This is done by adjusting the parameter set based on a documentation for the new sensor positions, which can be carried out by either WABCO or the vehicle operator. In the latter case, however, a PIN 1 is required as access authorisation for this advanced function. A PIN 1 authorisation can be acquired by attending a corresponding Trailer EBS E training course at WABCO.
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- Page 44 Founded nearly 150 advanced fleet management years ago, WABCO continues systems and mobile solutions. to pioneer breakthrough WABCO reported sales of $2.8 innovations for advanced driver billion in 2016. Headquartered in assistance, braking, stability Brussels, Belgium, WABCO has control, suspension, transmission 13,000 employees in 40 countries.
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