Connection To The Electrical System - Kanardia EMSIS User And Installation Manual

EMSIS – User's and Installation Manual
Figure 32: EMSIS unit with AHRS unit built-in (left), EMSIS slave unit (right). Both versions are
available, 80 mm and 3.5" screen.
EMSIS unit requires about 6 cm additional clearance behind. This clearance is needed for the connectors
and cables. Figure 33 shows the photo of EMSIS 80 mm version taken from side together with all cables
and connectors. EMSIS 3.5" screen version requires similar clearance space.
Figure 33: Side photo of EMSIS 80 mm version with all cables connected.

7.2 Connection to the Electrical System

The EMSIS unit must be connected to a 12 V DC standard aircraft power source. Additionally it can be
connected to the backup battery – UPSU unit.
Do not connect it to a 24 V system. If you do, you will probably not damage the equipment, but the screen
will be black. If you have a 24 V system in your aircraft, then you need a voltage adapter from 24 to 12 V.
The EMSIS display consumes very little power (less than 2 W), which means about 0.15 A at 12 V. We
recommend connecting EMSIS using appropriately rated breaker or replaceable fuse on the power input. A
1 – 2.5 ampere fuse is appropriate.
Make sure that all units share the same common ground. There should be none or minimal voltage (up to
10 mA) between common ground and each unit ground, when all units are turned on. Otherwise your
aircraft electrical system needs a good inspection.
EMSIS with AHRS unit built-in is shipped with 1 m power cable with 2 pin female connector on one side
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