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JPI EDM-930 - User Manual

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FAA Approved Installation Manual for the Report No 908
EDM-900 and EDM-930 Page 1 of 55 Rev I
Primary Engine Data Management System Date 1-18-2013
TABLE OF CONTENTS
1. Revisions ______________________________________________________________________________________ 3
2. Instrument Marking ______________________________________________________________________________ 4
3. Primary TSO Label ______________________________________________________________________________ 4
4. Operation and Abbreviations ______________________________________________________________________ 5
5. Dimming ______________________________________________________________________________________ 6
6. Locating and Installing the Indicator and Remote Alarm Display (RAD and Alert Light) ________________________ 9
6. EDM-900/930 Key information installation __________________________________________________________ 11
7. Routing the Wiring Harnesses_____________________________________________________________________ 12
8. Power Connection ______________________________________________________________________________ 12
9. Wiring Markings _______________________________________________________________________________ 13
10. Exhaust Gas Temperature Probe (EGT) Installation ___________________________________________________ 13
11. RADIAL Engine EGT_____________________________________________________________________________ 14
12. Turbine Inlet Temperature (TIT) Probe Installation (optional) ___________________________________________ 14
13. TIT for second Turbine Inlet Temperature ___________________________________________________________ 14
14. Using the Factory original TIT Probe_______________________________________________________________ 14
15. Cylinder Head Temperature (CHT) Probe Installation__________________________________________________ 15
16. Radial Engine CHT (spark plug gasket) _____________________________________________________________ 15
17. Outside Air Temperature (OAT) Probe Installation ____________________________________________________ 15
18. Induction Air (IAT), Compressor Discharge Temperature Probe Install (optional)____________________________ 15
19. Carburetor Probe Installation (optional) ____________________________________________________________ 15
20. Oil Temperature Probe Installation ________________________________________________________________ 15
21. Oil Pressure Sensor Installation ___________________________________________________________________ 16
22. Fuel Pressure Sensor Installation __________________________________________________________________ 17
23. Adding a non-primary gauge to the system ___________________________________________________________ 17
24. Fuel Pressure Sensor Installation __________________________________________________________________ 17
25. Ammeter Shunt Installation _______________________________________________________________________ 18
26. Load Meter Configuration________________________________________________________________________ 19
27. Fuel Level Sender Wiring Types ___________________________________________________________________ 20
28. Capacitive Sender Frequency Output Type Sender System_______________________________________________ 20
29. Resistive Output Type Sender System (Float type, most common) _________________________________________ 20
30. Voltage Output Type Sender System ________________________________________________________________ 22
31. Fuel Tank Calibration Setting Fuel Calibration Points _________________________________________________ 22
32. After you have collected your data _________________________________________________________________ 24
33. Fuel Flow Totalizer, Refuel Question _______________________________________________________________ 26
34. GPS Interface _________________________________________________________________________________ 27
35. Manifold Pressure (MAP) Sensor __________________________________________________________________ 27
36. RPM Sensor installation _________________________________________________________________________ 28
37. EDM-900/930 Specifications and Limitations_________________________________________________________ 29
38. EMI Radio Test and functional check:_______________________________________________________________ 30
39. Component Parts_______________________________________________________________________________ 31
40. Weight and Balance Data ________________________________________________________________________ 32
41. Pilot Programming _____________________________________________________________________________ 33
42. Programming the HP Constant ____________________________________________________________________ 33
43. Selecting Fuel Pressure Type (EDM-900 only)________________________________________________________ 34
44. Customizing Non-Primary Data (EDM900 only) ______________________________________________________ 34
45. K Factor______________________________________________________________________________________ 34
46. Adjusting the K Factor___________________________________________________________________________ 37

Table of Contents

Questions and Answers

  • Z
    zbauerAug 20, 2025
    Why does my JPI Avionics Display show '--- GPH'?
    • J
      James WallaceAug 20, 2025
      Dashes displayed instead of GPH indicate that there are no fuel flow transducer signals. To resolve this, have a mechanic verify the sensor and wiring.
  • T
    Tammy SalasAug 22, 2025
    How to fix off-scale EGT columns on my JPI Avionics Display?
    • S
      Steven GregoryAug 22, 2025
      Off-scale EGT column readings in your JPI Avionics Display usually mean the EDM is in Normalize view (blue EGT scales). To return to the Standard mode, hold the LF button.
  • A
    April BennettAug 25, 2025
    What to do if my JPI EDM-930 freezes or is incorrect?
    • G
      Glenda RossAug 25, 2025
      If your JPI Avionics Display freezes or shows incorrect data, it might be due to a power transient causing the processors to malfunction. Try recycling the power to the EDM.
  • K
    Kristina HarrisonAug 26, 2025
    Why does my JPI Avionics Display show '--- H.M'?
    • D
      derekjenkinsAug 26, 2025
      Dashes displayed instead of H.M indicate that there are no fuel flow transducer signals. This may be due to no GPS signal. Check the wiring.
  • A
    Allison MorenoAug 28, 2025
    How to fix a missing column in the JPI EDM-930 Avionics Display on start up?
    • D
      Donna LeeAug 28, 2025
      A missing column in the JPI Avionics Display upon start up means that the diagnostic routine has found an open line or probe with no connection. Replace the EGT or CHT probe shown in the error message.
  • T
    Timothy GutierrezAug 29, 2025
    What to do if there is a missing column in the JPI Avionics Display during flight?
    • M
      michael14Aug 29, 2025
      A missing column in the JPI Avionics Display during flight means a reading that is jumping around or incorrect. The probe is removed from the line up. Replace the EGT or CHT probe shown in the error message on the next flight.
  • K
    Katherine OliverAug 31, 2025
    Why is there a red 'X' on a single gauge of my JPI EDM-930 Avionics Display?
    • E
      edward84Aug 31, 2025
      A red ‘X’ drawn through a single gauge on your JPI Avionics Display indicates a measurement out of range. Have a mechanic verify if it is the engine or the sensor and replace as necessary.
  • H
    Harry GonzalesSep 2, 2025
    Why does LeanFind on my JPI EDM-930 Avionics Display find a peak too soon?
    • A
      alex69Sep 3, 2025
      If LeanFind on your JPI Avionics Display finds a peak too soon, it could be due to failure to pre-lean before performing LeanFind or stopping while leaning, or leaning too slowly. Continue to lean without stopping and lean more rapidly.
  • H
    hooverdonaldSep 4, 2025
    Why is there a red 'X' on all gauges for an engine on my JPI Avionics Display?
    • D
      Diana AndersonSep 4, 2025
      A red ‘X’ drawn through all gauges for an engine on your JPI Avionics Display indicates a DAU failure or DAU communications error. Check the power to DAU and wiring harness connections.
  • U
    ubartonSep 6, 2025
    What does 'OPEN PRB' mean on my JPI EDM-930?
    • J
      Jean BlanchardSep 6, 2025
      If the JPI Avionics Display shows 'OPEN PRB', it indicates an open probe. This means the wiring to the probe is open circuit. Check the wiring and crimps. Swap probes to troubleshoot.

Summary

6. Locating and Installing the Indicator and Remote Alarm Display (RAD and Alert Light)

Single Engine Aircraft EDM-900;930

Installation guidance for single-engine aircraft, covering display and RAD placement.

5. EDM Display Installation

Choose the Proper Installation Location

Guidance on selecting the optimal mounting location for the EDM display.

6. EDM-900;930 Key information installation

7. Routing the Wiring Harnesses

8. Power Connection

10. Exhaust Gas Temperature Probe (EGT) Installation

11. RADIAL Engine EGT

12. Turbine Inlet Temperature (TIT) Probe Installation (optional)

15. Cylinder Head Temperature (CHT) Probe Installation

17. Outside Air Temperature (OAT) Probe Installation

20. Oil Temperature Probe Installation

21. Oil Pressure Sensor Installation

22. Fuel Pressure Sensor Installation

23. Adding a non-primary gauge to the system

25. Ammeter Shunt Installation

Charge;Discharge configuration

Details the ammeter shunt configuration for charge/discharge monitoring.

Load Meter Configuration

26. Load Meter Configuration

General Fuel Flow Transducer Installation

27. Fuel Level Sender Wiring Types

29. Resistive Output Type Sender System (Float type, most common)

31. Fuel Tank Calibration Setting Fuel Calibration Points

35. Manifold Pressure (MAP) Sensor

36. RPM Sensor installation

38. EMI Radio Test and functional check:

41. Pilot Programming

42. Programming the HP Constant

45. K Factor

Fine tuning the K Factor

46. Adjusting the K Factor

48. Trouble Shooting

Diagnostic Testing on Startup and During Flight

48.1 GPS Interface Diagnostics

49. Connector Pin Assignments on EDM, J1 through J5

50. Connector Pin Assignments on EDM, J1 through J5

Alarm Limits

4- Maintenance Instructions:

5- Troubleshooting Information:

6- Removal and Replacement Information:

JPI EDM-930 Specifications

General IconGeneral
BrandJPI
ModelEDM-930
CategoryAvionics Display
LanguageEnglish

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