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Unread 14-02-2014, 18:04
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Re: Compressor code kills our drive system

Quote:
Originally Posted by EFastring View Post
Our system spazzed out when we tried to run the four motors/jaguars with two split pwm cables. After spending countless hours changing wires, jaguars, pwm cables etc, we gave up.

We have since run 4 PWN cables to the four jaguars and that seems to have solved those problems.
This is a classic symptom of a Digital Sidecar that isn't powered. There can be some leakage current through the DB-37 which is enough to get somethings to work. When you have 4 active PWM signals, you have more current then when you have 2. I suspect that when the compressor code tries to activate the relay, it's drawing more power then is available through the DB-37 cable.

If you remove the DB-37 cable, are all 3 power LEDs brightly lit?
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