D180 Rotax 912 UL - Tach & Amp

[Av8r3400]

I am first flying a new built Kitfox fitted with a 912UL (Zipper big bore) and a D180.

First I have the tachometer set to 1.5 pulses per revolution.  Is this correct?

Second - the amp (current) reading is all over the board.  I am using the supplied shunt wired per the installation instructions.  The reading during engine run is all over, swinging wildly from negative 60 amps to positive 60 amps current flow.  How can this get settled down.

 

[dynonsupport]

Typical Pulses Per Revolution values are 1.0, 1.5, and 2.0. We've seen all of these used used on various engines. The Pulse Per Revolution should be stated in your engine manual, but most customers find it easier to experiment with those three settings.

Typically, this indicates a fusible link or fuse blown in one of the input lines. Please check the fusible link or fuse in the input lines between the amps shunt sense terminals and the FlightDEK-D180.

I am first flying a new built Kitfox fitted with a 912UL (Zipper big bore) and a D180.

First I have the tachometer set to 1.5 pulses per revolution.  Is this correct?

Second - the amp (current) reading is all over the board.  I am using the supplied shunt wired per the installation instructions.  The reading during engine run is all over, swinging wildly from negative 60 amps to positive 60 amps current flow.  How can this get settled down.

 

[Av8r3400]

Fusible links are fine.

Is there any type of configuration or something that needs to be tweaked?

 

[Dynon]

Nope, there's no configuration there. It should just work. Which position (A/B/C) is your shunt in? And is it on the positive side of the electrical system?

 

[Av8r3400]

It is in the "A" location on the positive side.