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Thread: Flaps and Elevator trim positions sensor connections to AFS.

  1. #1

    Flaps and Elevator trim positions sensor connections to AFS.

    Hi,
    sorry to bother all, but me and my aircraft electric mechanic can't work out how to connect the sensors for the Flaps and Trim to the V1 AFS 5000 (non-SV).

    Out of the Elevator MAC servo/sensor there are 5 wires. 2 are white and for the motor. The rest are position sensor.
    Out of the Ray Allen Flaps sensor there are 3 wires - all for position sensor.

    We have a non AFS controller board for the Trim (connects to aircraft power, the trim motor and the sticks. We would not wish to use the AFS to control or supply the trim motor with power - we only want the indication on the screen - the same for the Flaps sensor.

    On the Engine Sensor connect, pin 34 is flap position (IN) and pin 35 is elevator trim position (in) - but which wire of the 3 goes in here and is it enough ? Pin 2+3 are Trim power and GND (out) but since we have a control board for the trim I suppose that this is not to be used.

    We are quite puzzled but the description of install manual page 157.

    Can someone please help out ??

    Getting to a fully ready aircraft very soon - super exited !!

    cheers
    Per, Copenhagen - Denmark

  2. #2
    The Ray Allen sensors are wired to the AFS system only. The trim motors are wired to the trim control board. The sensor wires are red(+) green (signal) blue(-). The sensor positive and negative get their power from the AFS and if you connect them anywhere else you have to make sure that theyare the correct voltage as the AFS can not take 12 v in on the signal. Gang the two positive and the two negative wires and connect them to the sensor positive and negative pins. Hope this helps.

  3. #3
    Like this ???

    Sk

  4. #4
    Yes, that is correct

  5. #5
    Advanced Flight Systems Shawn McGinnis's Avatar
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    Just wanted to point out this document if it got overlooked:
    http://advanced-flight-systems.com/S...(Standard).pdf
    Shawn McGinnis

    Advanced Flight Systems
    support@advanced-flight-systems.com

  6. #6
    How does the Elevator Trim indication wire to a SV-EMS 221? Signal (Orange) wire to Pin 4? Do the other two Sensor Position wires (Blue and Green) need to be terminated? Thanks,

  7. #7
    The default elev trim signal in an AF-5/6000 system with EMS-220/1 is pin 10. Pin 4 is an option, however, so this is not technically incorrect, but it is incorrect to call orange the signal wire. In the Ray Allen color coding scheme, wire as follows:

    green -- signal -- pin 10
    orange -- ground -- pin 30
    blue -- +5V -- pin 18

    For further reference see our EMS-220/1 wiring document:
    https://www.advancedflightsystems.co...%20Diagram.pdf

  8. #8
    Thanks Jonathon. My manual shows SV-EMS 211 Pin 10 for Coolant Temp and Pin 4 for Elevator Trim. For the SV-EMS-220 is shows Pin 4 for Carb Temp and Pine 10 for Aileron Trim. The reference drawing for the 5V wire states (not used with Advanced Control Module)
    Last edited by bhughes; 08-11-2023 at 07:44 AM.

  9. #9
    Much of what is shown on the EMS-221 schematic on page 129 of the AF-5/6000 install manual is really just a suggested use case. While in previous software revisions of the AF-5/6000 EFIS the EMS-220/1 pins were hard-coded to specific sensors only, with current EFIS software any sensor that is wired to what the SkyView documentation refers to as a general purpose input or an enhanced general purpose input is eligible to be reassigned to any other pin from that same family, and this includes every sensor that you have named.

    So when you look in the SET --> CAL --> Elevator Trim menu, you will see a menu option for "Pin Select". You will see this same value in the respective coolant temp and carb temp menus, and this is how you can tell the EFIS which compatible pin you have wired these sensors to. Note that while the general purpose and enhanced general purpose input pins are fungible in this manner, other pins are not. +5V sensor power is only available on pin 18, grounds are only available on the named ground pins, 24/25 are only available for the ammeter shunt, etc..

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