Greetings,
I am new to Arduino, but hoping I can use it for building lighting controls. Sorry if the below information is too much or if it is unclear. At least I broke it up into sections.
Usage:
I want to be able to push a momentary master on or off switch near the door and sequentially turn most or all of the building lighting on or off from that location.
Present setup:
I am presently using a G.E. master sequencer (discontinued) or a G.E. RSP12 sweeper ($600+ U.S.) for this purpose.
The Sweeper or sequencer is connected to multiple (Up to 16) G.E. RR7 low voltage (24VAC) relays, which turn on or off 120VAC power to the florescent lights in the building when activated. Each room has a switch which can individually activate the relay(s) for that room as well.
The master switch is a G.E. RS232 2-button momentary switch. It has 3 connections: common, on, and off.
The relays use a 24v pulse to turn on, and once on they will remain in that state until turned off, again using a 24v pulse. They can be activated using a minimum 50ms pulse.
They have an inrush current of 325mA according to the attached spec sheet.
The sweeper or sequencer activates the relays sequentially, but in fast succession.
The entire setup is powered by a 24VAC, 2A relay. Presently the circuit to the relays is half rectified to increase service life, as mentioned in the spec sheet.
Proposed setup:
I am thinking about using an Arduino Uno connected to 2 stacked 4x4 Driver Shields, one for the "on" side of up to 16 RR7 relays, and one for the "off" side.
How to wire the master switch is a question. I thought about putting 5v to the common wire of the master switch, then connecting the switch's on and off outputs to different analog inputs of the Arduino. It could read the voltage when the switch was pressed and sequentially activate the relays either on or off, depending on which input got voltage.
I don't know if there is an easier or better way to do this, or if this will even work.
Thanks for your input.
RR-7.pdf (78.8 KB)