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OneSwitch
OneSwitch Dimming affords local control to the end-user whereby a simple,
momentary, push-to-make wall switch can be used to raise or lower the lighting level or
toggle the output of the unit ON or OFF. A short press (less than 1 second) toggles all
outputs from both OFF to both ON or from either ON to both OFF. A long press will ramp
the digital output either up or down with no effect on the volt-free output. If the output
prior to pressing the switch is above 90% the output will ramp down; if below 90% it will
ramp up. If the latest press and the current press are within 5 seconds of each other it will
ramp in the opposite direction. A latching switch can be used to override the outputs
OFF or ON at maximum output.
User Overrides
The end-user can configure a number of lighting scenes that can be recalled using a
hand-held override. With an HC5A hand-held controller lighting can be overridden OFF
or ON, or a set level can be chosen, affecting either the controlled group or, with an MLS
system, the whole zone. Regulating and switched loads can be adjusted independently
through a combination of OneSwitch Dimming and the HC5A.
Important Additional Notes
1. All terminals on this product are provided for final connections. It is not intended that the
product be used as a junction box for looping cables.
2. A means for disconnection must be incorporated in the fixed wiring in accordance with the
current wiring regulations.
3. Although nominally 12V, the dimming output is not SELV and therefore should be treated
with the same respect as mains with regard to wiring practice.
4. The dimming control output should be connected only to the control input of the ballasts -
never to other detectors.
5. Due to the fact that the photocell is on the ceiling looking down, it is not possible for
measurements made with a lux meter on the working plane to remain constant when daylight
illuminates the ceiling and the working plane to a differing extent. Therefore, products of this
type should be regarded as capable of maintaining an APPROXIMATE light level only.
6. This equipment switches lights no more frequently than would a responsible human
occupant. However, manufacturers of some lighting types (e.g. '2D' luminaires) may specify
a maximum number of switching cycles in order to achieve a predicted lamp life. Please
check with the manufacturer of the luminaires to ensure that they are compatible with
automatic controls in this respect.
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