Safety without exception.

Conquering the elements with unique ultrasonic technology for maximum safety.

USi®-safety Ultrasonic Sensor System uppfyller kraven för kat. 3 PL d

PL d certification

Ultrasonic Technology for Safety in All Areas

The USi-safety ultrasonic sensor system is breaking new ground for safety applications—whether in challenging, dusty environments or in outdoor areas. Machines and vehicles can be reliably protected using state-of-the-art ultrasonic technology and all of the advantages this brings.
Intelligent Design for Every Situation

Intelligent Design for Every Situation

A miniature sensor unit detached from the control interface allows the USi-safety to be used even in confined installation situations. The special design of the converter allows the sensor to cover an elliptical, three-dimensional sound field with opening angles of ± 17° and ± 5°, providing an improved level of safety.
Protected against Manipulation

Protected against Manipulation

Preventing safety functions from potentially being manipulated is a recurring challenge when implementing safety applications. USi-safety supports a teach-in process where a machine part is used as a reference target, so that the sensor system can register deviations immediately and the safety function can remain operational.
Quick Parameterization and Automatic Documentation

Quick Parameterization and Automatic Documentation

Comprehensive parameterization software and documentation make commissioning the ultrasonic sensor system quick and simple for users. In addition, the parameterization software can be used to initialize periodic tests and to generate safety protocols for the required safety verification in a fully automated manner.




Two Category 3 PL d Safe Systems on a Single Evaluation Unit

USi-safety evaluation unit

Up to two ultrasonic sensor units (ultrasonic transducers) can be connected to the evaluation unit of the USi-safety ultrasonic sensor system. They each have a single-fault tolerance, 2-channel structure. Reliable protection is therefore possible via each of the two independent sensor channels. A safe sensor system is provided even when only one sensor unit is connected. One signal output and safe OSSD outputs in accordance with category 3 PL d are available for signal output to a safety controller for each connected sensor unit.

In combination with the remote design of the converters, which are available with cable lengths of up to three meters, the system can be used very efficiently in applications where left/right or forward/reverse movements in a space need to be safeguarded—on Auto-Guided Transport Systems, for example. In addition, applications can also be implemented in which both sound fields are focused directly adjacent to each other or even overlapping to secure the widest possible collective sensing range—for example, as a sound curtain that is used to control access to a work cell.

Technology

Elliptical Sound Field for Especially Wide Sensing Range

USi-safety sound field

Whereas conventional ultrasonic sensors emit acoustic signals in the form of a radially symmetrical sound beam, in the USi-safety this takes the form of a strongly elliptical sound field. The opening angle of ± 17° / ± 5° creates an especially wide sensing range in one plane and a narrow sensing range in the other. This allows the sensor unit to be mounted in confined installation situations.

The system can therefore be used successfully even just above ground level or close to a wall. At the same time, this technology—which is optimized for capturing 3-D spaces—enables the sensor to detect switching targets or obstacles that are overhanging or near to the ground.

The System

The USi-safety ultrasonic sensor system consists of a evaluation unit, a sensor unit, a temperature sensor, and the software. To learn more about the individual components, click through the tabber menu on the right.

USi-safety system

The Components

Evaluation Unit
Sensor Unit
Temp. Sensor
Software
USi-safety
The control interface contains two microcontrollers that monitor the connected sensors, their own hardware, and each other to ensure that the components are functioning correctly. This provides the system with single-fault tolerance in accordance with EN ISO 13849-1. In addition to the connections for the ultrasonic sensor units and the safe, short-circuit, and crossed-circuit monitored OSSD outputs, there is an input for a temperature sensor and a USB interface for parameterization via PC.

Exempel på tillämpningar

USi-safety ute på fältet (video)

Få en inblick i hur USi-safety fungerar: Vår animering visar systemet i arbete och illustrerar de tekniska förbättringarna.





Undvikande av kollision i gaffelspetsen

Undvikande av kollision i gaffelspetsen

Att på ett tillförlitligt sätt förhindra kollisioner med förarlösa gaffeltruckar är ett idealiskt användningsområde för ultraljudssensorsystemet USi-safety. Eftersom ultraljudstekniken är motståndskraftig mot smuts, temperatur, luftströmmar och luftfuktighet utökar den användningsområdet för dessa automatiskt styrda transportsystem (AGT) avsevärt. Dessutom kan USi-safety till och med säkert övervaka närgränsen precis innan gaffelarmarna går in i pallen – en utmaning som ingen av de vanliga säkerhetscertifierade systemen har kunnat hantera förrän nu. En specialutvecklad algoritm förhindrar överföring mellan flera automatiskt styrda transportsystem som är utrustade med USi-safety.

Safe Overhead Conveyors in Hospitals

Safe Overhead Conveyors in Hospitals

Automated guided transport systems can be found in many hospitals. This specific application involves an overhead conveyor with metal rolling containers in which materials such as laundry, medicine, and food are moved to their destination. The AGT system moves through the supply passages in basement floors, picking up rolling containers and transporting them to the required station through special shafts. The USi-safety devices are ideal for integrating into the chassis of the AGT system. The freely positionable sensor units are fixed at a predefined angle on the right and left using customized mounting sets. To prevent the sensor units from separating when the container holder rotates, they each seal with the bottom edge of the switch cabinet.

Tillförlitligt lateralt skydd för autonom transport av tankar

Tillförlitligt lateralt skydd för autonom transport av stora tankar

Inom den kemiska industrin kan tankar så långa som 20 meter flyttas runt på området med automatiskt styrda fordon (AGV) i motsvarande storlek. Dessutom används rutterna av andra fordon, och även av människor, antingen till fots eller på cykel. AGV-fordonet styrs med en elektronisk anslutning till ett märkningsspår. Långa tankar kräver dock en motsvarande radie vid kurvtagning och – särskilt vid sådana punkter – sidokollisionsskydd. Flera ultraljudssensorer med USi-safety finns på varje sida av fordonet. Den mycket kompakta sensorenheten kan monteras på platser där andra typer av sensorer inte passar, till exempel i hjulområdet. Ljudstrålen fungerar som en akustisk sensor som ger kontaktfri styrning av sidoområdet under transport. Enheterna upptäcker på ett tillförlitligt sätt alla hinder i ett definierat säkerhetsområde. Vid behov ingriper säkerhetsutgångarna i fordonets styrsystem.

Personal Safety in Lane-Guided AGVs

Personal Safety in Lane-Guided AGVs

Lane-guided AGVs follow a lane applied on the ground and transport goods from one station to the next. In this process, it can happen that the paths of people cross the specified transport paths of the vehicles. In such areas, collisions between the AGVs and people must be avoided to ensure both personal protection and uninterrupted transport. For this purpose, the detection range of the ultrasonic sensor units can be quickly and easily adapted to the conditions via the parameterization software. In addition to safe OSSD outputs for the safety field, the sensor system also has one signal output per channel, for example to reduce the speed of an AGV or to issue a warning signal.

Machine Safeguarding in the Wood Industry

Machine Safeguarding in the Wood Industry

Usually, machines are safeguarded by photoelectronic light curtains. However, wood dust or other particles flying around in the air, for example, can cause false alarms and the machine switches into the safe state. The light grid must be cleaned and the machine restarted manually in order to continue with the process. Due to ultrasonic technology, the USi-safety, used as a "sound curtain," is insensitive to wood dust and other particles and can withstand demanding environments. Unlike optical sensors, the USi-safety does not need to be kept clean, nor is the production process unnecessarily interrupted by false alarms—and the machine is still reliably safeguarded. At the same time, the system offers the advantage that fixed machine parts can be taught-in via teach-in function and used for manipulation protection. If this reference target is no longer recognized due to manipulation, the system switches to the safe state.

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Det här tillvägagångssättet har lett till branschens bredaste portfölj – med stöd av flera patent och innovationer – för högsta möjliga flexibilitet i produkturvalet och optimala tillämpningslösningar. Utöver vår standardportfölj har Pepperl+Fuchs den kunskap och infrastruktur som krävs för att tillgodose kundernas behov med snabbhet och flexibilitet.

Dessutom erbjuder vårt omfattande sortiment av tillbehör rätt moduler för anpassad integrering, oavsett om det gäller tuffa installationsförhållanden eller för särskilda tillämpningar, anpassad programmering och koordinerad anslutningsteknik. De förvandlar alla sensortillämpningar till en framtidssäker systemlösning med höga prestanda.






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