ENGINE MANUAL
IAE50R – AA
E1.01.05 – E
Issue date: 25.Jan.2018
Page: 19-12
Revision no: 9
19.2
GND Concept IAE50R
A common Ground (GND) concept is required for the installation of the IAE50R. This means all
electrical GND are connected together. Best practice is a star layout, which can be seen in the
following figure. The aircraft GND shall be included.
Engine
housing
12V Battery
Capacitor
+
-
Generator
Regulator
+
-
+
-
Aircraft
GND
ECU
+
-
Starter
+
-
Fig. 17: GND concept
Possible GND connection Points
) Regulator
see Chapter Generator Regulator
) Engine:
Possible connecting points for the engine GND
Engine backplate see Fig. 18
Screw for starter motor mounting
For any other points on the engine contact Austro Engine GmbH
Max allowed contact resistance for engine GND connection 50 mOhm
Wire suggestion 4x AWG14 GND; Engine housing to Battery negative terminal.
Fig. 18: Engine GND
