Finder’s lighting control components for energy savings

April 17, 2015 1:00 pm

 From a company formed to exploit its founder’s patent for a lighting control relay, Finder SpA has since grown to be a renowned name for such products and today offers reliable, rugged, superior electrical life, high inrush current handling capacity for lamp loads  and high temperature withstand capability to control over lighting circuits and in doing so, save energy.
Special time switches: In addition to a wide range of 24-hour, daily or weekly programmable time switches, Finder offers more specialised versions. Special light dependent relays: LDRs (light dependent relays) will, as the name suggests, switch according to the ambient light levels irrespective of the time of day or when the sun officially rises or sets. Fundamentally a simple device, there are a few refined version available where the light sensing element may be integral with the relay itself, or it is remote. The latter allows the light sensing to be more closely linked to the light entering an open area or a warehouse roof- light for example, or allows it to be less affected by the internal artificial light. This is important to avoid any “hunting” effect of the LDR due to artificial light feedback. An alternative way of achieving a decoupling of the sensor from the artificial light is to use special versions where the LDR’s micro-processor measures and then calculates for the effect of the artificial light and makes automatic correction for this (Finder 11.41 and 11.91 – Series).
“Zero hysteresis” version (Finder 11.41) incorporates special measures to overcome the natural instability that would normally result when having the ‘on’ and ‘off’ switching thresholds at the same level. All these fine tuning measures allow the threshold at which the lighting switches on and off to be more finely set, again contributing to optimising energy saving.
LDRs with time overrideApplications like this can be implemented on a simple case by case basis, and they are probably better served by using a simple stand-alone control component rather than trying to integrate within a wider system or network.
New application-specific movement detectorsBased on new innovative electronics and optics Finder has added three new application-specific movement detectors to its 18 Series range.

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