Fusing; Power Supply Conditioning - Sierra Wireless AirLink GX Series Hardware User's Manual

Pin 4 is configured in ACEmanager
as Digital Input/Relay Output 1
Rev 4 Jan.15

Fusing

For DC installations, Sierra Wireless recommends fusing the power input using a
2.0 A fast-acting fuse. Install the fuse on the positive line, as shown in
on page 35. For vehicle installations, use an automotive fuse.

Power Supply Conditioning

For automotive applications, the supply voltage may momentarily drop below 7 V
during engine cranking, causing the GX Series device to reboot. If this happens,
the GX device restarts automatically and is ready for use once the reboot is
complete. If your application requires the GX device to continue operating during
engine cranking, add external power conditioning circuits to ensure the supply
voltage does not drop below the rated value (7.0 V)
The following illustration shows the GX device power connector pins and the DC
cable wires.
GX
Power
connector
Pin 4
Digital I/O
Pin 2
Ground
Figure 2-20: GX Series device Power Connector Pin Diagram
To contact switch, relay, or external device
Green wire
Note: Pin 4 has a maximum rating of 30 V, 150 mA
White wire
To vehicle ignition
(or to VCC if NOT connected to the ignition)
Pin 3
Ignition Sense
Pin 1
VCC
Red wire
Black wire
Installation and Startup
Figure 2-20
Note: Colors are colors of
wires on the DC connector cable
2.0 A
fast-acting
- fuse
Battery
or
Power Source
(9 VDC to 36 VDC
12 VDC Nominal
35