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Thread: Check Amperage!

  1. #1

    Check Amperage!

    I frequently get this audible alarm and by looking at cockpit videos I realize they tend to come any time I am idling and key the microphone to talk to ATC, which makes them especially annoying as it interrupts my train of thought, even if ATC cannot hear it. I searched the manuals and cannot find any reference to this alarm.
    Last edited by Harold Roberts; 12-09-2021 at 06:04 AM.

  2. #2
    Harold, check your amperage and voltage when transmitting at idle. It could be a temporary low amperage alert (configurable in settings). It'd make sense if you're at idle and the alternator isn't putting out much amperage. It also could just be a very quick drop and recovery with the radio transmitting causing your amperage to drop below the alert limit. You can change the alert by decreasing your red range.

  3. #3
    majuro15, Thanks! Is there anything in the manuals (either pilot guide or installation) that covers this? We searched using 'amperage', 'current' and 'alarm' in both documents and found nothing. How do I navigate to the alert settings?

  4. #4
    Press SET, press and hold CAL. That gets you into the setup menu. Just look for Amperage I think or Amps. It's the same way you'd adjust any values, CHT, EGTs, etc.

  5. #5
    Thanks! Won't be in the same state as the plane until January but will try it out then.

  6. #6
    Another question: What is the alarm that says "Check Amperage" triggered by? A low voltage reading?

  7. #7
    Alarm would be triggered by the amps reading crossing into either the high or the low red bands as defined in the SET --> CAL --> Amperage (Shunt and/or Hall Effect) menus.

  8. #8
    Well, we found we could not set the amperage to negative numbers, even though they are defaulted to negative numbers. However, I found a menu setting that got what I wanted. You can set the audio alert to not go on if the rpm is below 1500. That fixed the problem without completely shutting off the audio alert. PROBLEM SOLVED!

  9. #9
    Quote Originally Posted by Harold Roberts View Post
    Well, we found we could not set the amperage to negative numbers, even though they are defaulted to negative numbers. However, I found a menu setting that got what I wanted. You can set the audio alert to not go on if the rpm is below 1500. That fixed the problem without completely shutting off the audio alert. PROBLEM SOLVED!
    I spoke too soon. Our normal idle rpm is above 1500. So the squelch below 1500 rpm does not squelch the alert since it is never below 1500rpm. I will post a question on how to change the amperage settings in a fresh posting.

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