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I have an EC2-A3 20B, this is not the latest
revision that uses the MOSFET staging relay, rather the version that uses the
electromagnetic relay. When in injector test mode, I get
firing pulses on all injectors. In this EC2 configuration, the
staging relay is closed when there is no signal to the relay, so the secondary
fire also. If you have the version with the MOSFET SSR relay, I would
suspect the signal line to the relay works in the inverse with a
corresponding change in the program logic from active low to active high on the
staging relay channel. Disconnecting the signal line from the MOSFET
SSR (Tracy's drawing, terminal 1, connection A) and running a line from the
terminal to ground should close the relay and the secondaries should fire as
well as the primaries.
Joe
----- Original Message -----
Sent: Sunday, January 13, 2008 7:28
AM
Subject: [FlyRotary] Re: EC2
Bob,
It is my understanding that the injector test mode
works on the 2-rotor models only, not the 3-rotor model.
Something to do with the injector staging relay used on the 3-rotor
units. If you hear the injectors click when you press the primer (store)
button, then I would conclude that they're good. Concerning the
primaries, you could connect one at a time and press the store button and
listen to see if it responds. Then repeat the process for the other
two. I don't think this works on the secondaries.
Mark
On Jan 13, 2008 12:04 AM, < BMears9413@aol.com> wrote:
Ok guys...my turn for help,
I hooked up a real battery tonight. no smoke..no popped breakers...no
blown fuses....EM2 lights right up and all temps are displaying accurate,
along with pressures. EM2 shows NOP on the RPM until I power up the EC2, as
it should. I tried the test mode of the injectors and the coils. I can hear
the injectors when I use the primer function, but I get nothing on the
continuous injection or the continuous coils. So mode 0 is working for
prime, but I get nothing on mode 1 and 9. Its late, Im tired, and I havent
checked anything with a test light yet. will start that tomorrow. All
grounds are hooked up and grounding. All plugs in tight on the EM2. EC2, and
control panel. Harness built by Bob White so I dont think anything
is messed up there. Am I overlooking anything simple ?????
Bob Mears
Supermarine Spitfire
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