UV-LED Spot P – powerful UV spot

The device emits UV-A and blue light. UV radiation is invisible. Any visible light is only luminescence excited by the radiation; it is usually much weaker than the exciting UV radiation. The irradiance of the device is several hundred times stronger than that of sunlight.

UV-A radiation can cause cataracts in the lens of the eye and inflammation of the retina. Always wear suitable UV protective goggles when operating the device. UV-A also causes skin discolouration and skin ageing; use suitable clothing, gloves and further personal protective equipment - depending on the irradiation dose.

The devices are designed and classified according to DIN EN 62471:2009-03 "Photobiological safety of lamps and lamp systems"; the Spot P falls into risk group 3. Do not look into the LED and do not expose the skin to the UV radiation permanently.

We are glad to support you in setting up UV workplaces and with the risk assessment according to DIN EN 14255:2005.

To make machines safe and to meet the requirements of the machinery directive 2006/42/EC, safety functions are needed in the controls. Usually the required performance level PLr is determined for every safety function. This is where the first difficulty with UV installations begins: the severity of the injury, the frequency and duration of exposure and the avoidance of the UV hazard have to be determined.

In the short term, UV exposure of the skin leads to erythema, elastosis and skin cancer; exposure of the eye can lead to photokeratitis, conjunctivitis and cataractogenesis. Skin cancer is a severe and usually irreversible injury.

Directive 2006/25/EC on artificial optical radiation permits regular exposure up to a daily exposure limit of 30 J/m². The severity of the injury can therefore be reduced through the duration and the intensity of the exposure without having to achieve absolute zero exposure: if the limit is observed, healthy adults can be expected to be exposed repeatedly without acute harmful effects. In the event of a fault, a short exposure may cause a reversible injury such as a slight erythema. The boundary is not reliable, however, and measures and safety functions are needed in every case.

Measurements are possible on existing installations; during the planning phase they are not, or only with additional effort, which is why a higher PLr is often demanded. This is exactly what the LedControl S and the PLready option are for - already at the planning stage.

The PLready safety option is suitable up to PL category 4 according to EN ISO 13849-1 and SIL 3 according to EN 62061, provided that cross-faults in the control of the LED module and in the sensor circuit can be excluded.

It works with a safety extra-low voltage (SELV) of 48 VDC that is safely separated by an external circuit and can switch the LED modules off completely in the event of a fault.

The optional shutdown for the performance level separates the LED modules through an external contact:

A two-channel safety door monitoring with automatic start is shown in the following example. Compared with simply separating the DC voltages, the advantage is the monitoring of the external contactors. The example is suitable up to category 4, PL e (EN ISO 13849-1) or SIL 3 (EN 62061), provided that cross-faults in the control of the actuator and in the sensor circuit can be excluded.

The Spot P is 143 mm long, the short version Spot P short only 60 mm. Scope of delivery: the UV-LED spot including optic, mains cable and manual. Please specify the wavelength, the optic and the options.

Please state the required wavelength with your order; it is not part of the order number. The peak wavelength lies within ± 5 nm.

The optic determines the focus and the irradiance that can be reached; the additional optic is available as an accessory.

The spots are operated through a LedControl: S for one spot, 5S for five, 16S for sixteen, DC for operation at 24 V. At the LedControl different wavelengths can also be operated together.

The programming interfaces and the PLready safety option are ordered together with the control unit.

Additional cable length beyond the standard length is charged per metre; please ask us. For simple operation we recommend ordering the foot switch as well; for work in places that are hard to reach we offer extension cables with kink protection.