Rotor RPM sensor input?

[CGameProgrammer]

I have a Rotax 912 and a rotor RPM sensor that is 5V. I am trying to figure out which EMS pin to use for the rotor RPM so I could display both values. Its voltage seems too low for 33 so should I use 35?

 

[silverlight]

The sensor being used here is an inductive sensor that senses 10 holes in a metal ring by proximity for one revolution. Sensor is LJ12A3-4-Z/BY that works with 6 to 30 volt input, outputs 300 mA

 

[Dynon]

Yes, if you have a voltage output that is below 10V, pins 32/33 won't be able to see it. Instead, used either of pins 34 or 35 (it doesn't matter which).

 

[CGameProgrammer]

For clarification, the 912's rpm sensor is on pin 32. So I guess that means we should use pin 35 for the rotor rpm? I'm assuming we can't use both 32 and 34...? Not that it matters but it's good to know for sure. The rotor rpm sensor pulses 10 times when one revolution has been completed; I assume this setting is configured somewhere so the display knows how to interpret the pulses?

 

[Dynon]

Yes, you can only use one of 32/34 and 33/35.

The pulses per revolution are set in SETUP MENU > HARDWARE CALIBRATION > EMS CALIBRATION > TACHOMETER CALIBRATION, and you can set both sets of pins individually (whether you're doing a conventional setup or splitting the L/R pins) . See the installation manual for more details.

 

[CGameProgrammer]

Perfect, that is what I needed to know. Thanks.