Location-based configuration of a load control device
A method of automatically programming a new load control device that replaces an old load control device takes advantage of a remote identification tag (e.g., an RFID tag) located in the vicinity of the old device. The remote identification tag stores an identifier that is representative of a location in which the old device is installed. The method includes the steps of: (1) storing a setting of an old device in a memory of a controller; (2) associating the setting with the identifier of the old device in the memory of the controller; (3) the new device retrieving the identifier from the remote identification tag after the new device is installed in the location of the old device; (4) the new device transmitting the identifier to the controller; and (5) the controller transmitting the setting of the old device to the new device in response to receiving the identifier.
1. An apparatus comprising: a lighting load; a load control circuit configured to control power delivered from a power source to the lighting load; a controller configured to control the load control circuit to adjust the power delivered to the lighting load; a first communication circuit communicatively coupled to the controller and adapted to be coupled to a communication link n enable the controller to transmit and receive messages via the communication link; and an identifier-retrieval circuit communicatively coupled to the controller; wherein, when the apparatus is mounted in close proximity to an identifier-transmitting device, the controller is configured to receive, via the identifier-retrieval circuit, an identifier from the identifier-transmitting device located in a fixture in which the apparatus is installed, the identifier received from the identifier-transmitting device representative of a location of the identifier-transmitting device; and wherein the controller is further configured to transmit a first message including the identifier on the communication link via the first communication circuit, and to subsequently receive a second message including a load control setting associated with the identifier via the first communication circuit.
2. The apparatus of claim 1 , wherein the load control circuit is adapted to be coupled between the power source and the lighting load and comprises a back end circuit configured to control an amount of power delivered to the lighting load to control an intensity of the lighting load.
3. The apparatus of claim 2 , wherein the load control circuit comprises a front end circuit configured to receive an alternating-current line voltage and generate a direct-current bus voltage that is received by the back end circuit.
4. The apparatus of claim 3 , wherein the front end circuit comprises a boost converter circuit configured to generate the bus voltage.
5. The apparatus of claim 4 , wherein the boost converter circuit operates as a power factor correction circuit to improve the power factor of the apparatus.
6. The apparatus of claim 4 , wherein the bus voltage has a magnitude greater than a peak magnitude of the alternating-current line voltage.
7. The apparatus of claim 3 , wherein the front end circuit comprises a rectifier circuit.
8. The apparatus of claim 7 , wherein the bus voltage has a magnitude equal to approximately a peak magnitude of the alternating-current line voltage.
9. The apparatus of claim 3 , further comprising:
a hot terminal and a neutral terminal for receiving the alternating-current line voltage;
wherein the front end circuit comprises an electromagnetic interference filter for minimizing noise provided at the hot and neutral terminals.
10. The apparatus of claim 1 , wherein the identifier-retrieval circuit comprises a second communication circuit configured to receive a third message including the identifier from the identifier-transmitting device.
11. The apparatus of claim 10 , wherein, prior to receiving the third message including the identifier via the second communication circuit, the controller is configured to transmit a fourth message to the identifier-transmitting device via the second communication circuit of the identifier retrieval circuit.
12. The apparatus of claim 11 , wherein the controller is configured to automatically transmit the fourth message when the controller is not assigned a short address at power up of the apparatus.
13. The apparatus of claim 1 , wherein, after transmitting the first message including the identifier on the communication link via the first communication circuit, the controller is configured to receive a short address associated with the identifier via the first communication circuit.
14. The apparatus of claim 13 , wherein the controller is configured to use the short address to transmit and receive messages via the communication link.
15. The apparatus of claim 13 , wherein the controller is configured to operate in a default mode after storing the identifier in the memory.
16. The apparatus of claim 1 , further comprising:
a memory coupled to the controller for storing the identifier;
wherein the controller is configured to store the identifier received from the identifier-transmitting device in the memory.
17. The apparatus of claim 16 , wherein the controller is configured to store the identifier received from the identifier-transmitting device in the memory when the controller is not assigned a short address at power up of the apparatus.
18. The apparatus of claim 1 , wherein the controller is configured to receive a plurality of messages including a plurality of respective load control settings associated with the identifier.
19. The apparatus of claim 1 , wherein the lighting load comprises an LED lighting load, and the apparatus comprises an LED driver for controlling an intensity of the LED lighting load.
20. The apparatus of claim 1 , wherein the control setting comprises one of a high-end trim, a low-end trim, a fade time, and a group of the apparatus.