Wiring Diagrams - Sierra Wireless AirLink RV55 Hardware User's Manual

Wiring Diagrams

Recommended Vehicle Installation
For vehicle installations, Sierra Wireless recommends connecting the white Ignition Sense
wire to the vehicle's ignition switch, as shown in the following illustration.
Figure 2-7: Recommended Vehicle Installation
The recommended vehicle installation allows the router to operate with the vehicle. When
the vehicle ignition is off, the router is off. If desired, you can configure a delay between
the time the vehicle's ignition shuts off, and the time the router shuts down. A delayed
shutdown is especially useful if you want to maintain a network connection while the
vehicle's engine is shut off for short periods, such as in a delivery vehicle.
•
•
•
Alternate Vehicle Installation
The main difference between this installation and the standard vehicle installation is that
you can configure a timer to turn the router on at set intervals for a configured length of
time; for example 20 minutes once every 24 hours when the ignition is off. Also, instead of
the router turning on and off, the router alternates between on and standby mode.
Rev. 1 June 2019
Battery
Ignition
Engine compartment
Vehicle firewall
Pin 1 (Power) —Use the red wire in the DC cable to connect Pin 1 to the power
source. Include a 4.0 A fast-acting fuse in the input power line. Sierra Wireless recom-
mends using a continuous (unswitched) DC power source.
Pin 2 (Ground)—Use the black wire in the DC cable to connect Pin 2 to ground. See
also Grounding the RV55 Router Chassis
Pin 3 (Ignition Sense) —Sierra Wireless recommends always using the Ignition Sense
wire (Pin 3) to turn the router off. It should not be turned off by disconnecting the
power.
Vehicle fuse box
4 A fuse
1 Power
3 On/Off
4 I/O
2 Ground
Vehicle cabin
on page 19.
27
Installation and Startup
RV55
41113042