SICK is presenting the V300 WS Extended – the latest generation of safe camera sensors for protecting hazardous areas and points-of-operation at SIL2 or PL d levels – for the first time at the SPS/IPC/DRIVES 2009 trade fair in Nuremberg. Its range has been enhanced so that it can now monitor protective areas of up to 2.25 m². Operating two systems in Synchronous Mode allows the size of the protective field to be doubled. Commissioning of the V300 WS Extended has been made even easier with the help of intuitive single-button operation and the improved four-LED display. The single-device concept of the safe camera sensor is also convincing in economic terms – because the device ensures cost-efficient procurement, stock-keeping and spare-part administration.
The V300 WS Extended is a non-contact safety system based on image processing technology. It fulfils safety integrity level SIL2 according to IEC 61508 and Performance Level PL d in line with EN ISO 13849. The sensor’s transmitter and receiver are integrated in a single housing – as are the supplementary functions Reset and External Device Monitoring. The compact triangular housing of the safe camera system allows horizontal or vertical installation at locations in which the sensor is protected against impacts, misalignment or damage.
A single device for almost all common opening sizes and formats
With a range of 2.12 m, the V300 WS Extended is suitable for machine openings and monitored areas of up to 1.5 m x 1.5 m². Mounted in a corner, the V300 WS Extended generates a field that reaches to the reflector strip mounted opposite the device. The entire length and breadth of the reflector strip is monitored with selectable resolutions of 20 mm, 24 mm or 30 mm. The V300 WS Extended signals within 20 ms and stops the machine movement immediately if someone reaches into the machine during processing activities. The protective fields can be steplessly adapted to the application during commissioning. Long or narrow action windows, ducts on machines, cables passing through the protective field, or spatial geometries when used to prevent access from the back of a machine can be appropriately taught-in. In the case of larger monitoring areas, it is possible to connect two devices via the serial synchronisation input and thus double the protective field size to 4.5 m². If two sides meeting one another at an angle are to be protected, two V300 WS Extended units are also the perfect solution here: there is no need for a central strut in the corner – so the operator has unobstructed access to the machine via the corner, e.g. for the insertion and removal of larger workpieces.
Optimised installation as well as commissioning and diagnostic display
Almost no other safety sensor is as easy to install and commission as the V300 WS Extended. Two screws are sufficient to reliably fix the device, e.g. in or on the corner of a slotted profile frame. Only one cable is required for electrical connection. Alignment on the reflector strip takes place automatically. The protective field is taught-in in Teach-in Mode. The four-LED display supports this process in that one LED each indicates the status of the safe switching outputs, external device monitoring, the reset button and the teach-in button. If diagnosis becomes necessary, the above-mentioned assignment of the LEDs permits targeted corrective work, minimising the time spent handling servicing activities. The protective field is divided into four sectors during running operation – the LEDs provide visualisation of reflector strip detection for each sector and thus ensure safe function.
Safe camera sensor also keeps costs under control
The concept of the V300 WS Extended – a single device for all opening sizes and a wide range of protective field geometries – opens up economical solutions in many terms. The device, which can be easily and rapidly mounted and operated without expert knowledge, reduces commissioning costs. It creates safe working conditions, preventing accidents at work and thus minimising the risk of subsequent follow-up costs and liability demands. As a “universal sensor” for a wide range of similar but not always identical applications, it reduces the number of variants that would otherwise require stocking at machine constructors or system integrators – with a positive effect on economic efficiency in warehouses and logistics. This also applies for applications with two synchronised sensors: identical variants can be used here.
The “little brother” V200 WS Extended
The “little brother”, the V200 WS Extended, is also the suitable solution for tasks for which the risk analysis indicates a lower protective requirement – at the level of SIL1 and PL c – with the same performance data.