Patent ID: 9723691
Date: 2017-08-01
CPC Classifications: F21S,F21V,F21Y,H05B,Y02B

Claim:
1. A method of automatically calibrating a lighting controller for controlling light assembly, said light assembly having a ballast and a dimmable light, comprising the steps of: providing an automated lighting controller comprising: selecting a light assembly to be exercised by the application of varying voltage and measuring current drawn by the light assemblies; setting the dimmer setting to 0% for the selected light assembly; measuring the current drawn by the selected light assembly; recording the current drawn as a ballast current minimum; increasing the dimmer setting by a selected amount; measuring the current drawn by the selected light assembly and determining if the measured current is greater than the ballast current minimum; if the measured current is within a tolerance value of the ballast current minimum, recording the dimmer setting as a dimmer minimum and the returning to the step of increasing the dimmer setting by a selected amount; if the measured current increases beyond the tolerance value of the current, recording the dimmer minimum as the final dimmer minimum and the current minimum as the final current minimum; recording the measured current as a ballast current maximum and the dimmer setting as ballast dimmer maximum; increasing the dimmer setting by the selected amount; measuring the current drawn by the selected light assembly and determining if the measured current is greater than the ballast current maximum; if the measured current increases beyond a tolerance value of the ballast current maximum, recording the dimmer setting as a ballast dimmer maximum and the measured current as the ballast current maximum and then returning to the step of increasing the dimmer setting by the selected amount; if the measured current is within the tolerance value of the current maximum, recording the ballast dimmer maximum as the final dimmer maximum and the ballast current minimum as the final current maximum; and controlling the dimming of the selected light assembly using the final dimmer minimum, the final current minimum, the final dimmer maximum and the final current maximum.