Abstract: A diagnostic and configuration identification system for an electrical device and a Photo-controller which automatically turns the electrical device on and off in response to ambient light levels. A detector senses the load drawn by the electrical device when it is on. A processor is responsive to the load drawn by the electrical device when it is on and programmed to detect a cycling fault condition based on the load drawn by the electrical device and to provide an indication of a cycling fault condition according several possible programming configurations. When no cycling or other fault condition is detected the processor determines the cycling fault condition indication configuration and then outputs a cycling signal indicative of the program configuration.

Abstract: A diagnostic and configuration identification system (40) for an electrical device and a photocontroller (10) which automatically turns the electrical device on and off in response to ambient light levels. A detector (32) senses the load drawn by the electrical device when it is on. A processor (54) is responsive to the load drawn by the electrical device when it is on and programmed to detect a cycling fault condition based on the load drawn by the electrical device and to provide an indication of a cycling fault condition according several possible programming configurations. When no cycling or other fault condition is detected, the processor (54) determines the cycling fault condition indication configuration and then outputs a code signal indicative of the programming configuration.

Abstract: A starting aid for a luminaires includes a trigger circuit for supplying a trigger voltage pulse to a lamp in response to the presence of a line voltage signal supplied by a photodetector, a feedback circuit for detecting the lamp voltage and means, responsive to the line voltage signal and the feedback circuit, for comparing the voltage on the lamp to a nominal voltage level for disabling the trigger circuit and terminating the trigger voltage pulse in the presence of a lamp cycling or lamp out condition.

Abstract: A photocontroller diagnostic system including a photocontroller with a sensor for determining the presence of daylight, and a relay, responsive to the sensor, for de-energizing a lamp during periods of daylight. The diagnostic subsystem is responsive to the photocontroller, and includes a microprocessor programmed to verify the operability of the relay and/or the sensor and programmed to transmit a signal representative of the operability of the relay or the sensor.

Abstract: A filtered photocontroller with a housing including a window portion; a circuit board within the housing including a light sensor behind the window portion of the housing; and a polymer filter which attenuates infrared radiation in front of the light sensor for improving the responsiveness of the photocontroller.

Abstract: A luminaire diagnostic system including a lamp and a photocontroller for automatically turning the lamp on during periods of darkness and off during periods of daylight wherein the photocontroller includes detector circuitry for detecting the load drawn by the lamp, a microprocessor, responsive to detected load and programmed to predict a condition of the lamp such as a cycling event and/or lamp out condition based on the load drawn by the lamp, and an indicator such as a visual alarm for indicating the occurrence of the condition detected and/or a transmitter for transmitting the detected condition to a remote location. Also, upon cycle detection, the lamp may be turned off to prevent damage to fixture components.