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Unread 28-01-2011, 10:57
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Re: Control of Decorations (Led displays)

Quote:
Originally Posted by AndrewN View Post
Each "spike" can switch two circuits: there are two relays inside that can switch between +12V and 0V. The "fwd", "rev" control signals each control one relay. You could control 4 separate light ropes with 2 "spikes". The "ground" from each rope would be connected back to a black terminal on the power board.
<R42> Each power-regulating device (speed controller or relay module) shall control one and only one electrical load (motor, actuator or compressor).
Exception: Multiple low-load, pneumatic solenoid valves may be connected to a single relay module. This would allow one relay module to drive multiple pneumatic actions. No other electrical load can be connected to a relay module used in this manner.

From my understanding, a spike can control 2 circuits only if they are low-load, pneumatic solenoid valves. So you cannot control 2 different LED's (although I'm sure the current requirement is comparable).

If someone here disagrees, please let me know. Right now we have 3 relays for this purpose and I would not mind going down to 2!
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