
AirLink RV50 Series Hardware User Guide
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4117313
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 3-5: Recommended Vehicle Installation
The recommended vehicle installation allows the gateway to operate with the
vehicle. When the vehicle ignition is off, the gateway is off. If desired, you can
configure a delay between the time the vehicle’s ignition shuts off, and the time
the gateway 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.
•
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 recommends 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 RV50 Series Gateway Chassis
•
Pin 3 (Ignition Sense) — Sierra Wireless recommends always using the
Ignition Sense wire (Pin 3) to turn the gateway off. It should not be turned off
by disconnecting the power.
Alternate Vehicle Installation
The main difference between this installation and the standard vehicle installation
is that you can configure a timer to turn the gateway 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 gateway turning on and off, the gateway
alternates between on and standby mode.
RV50
Series gateway
Power
Ignition Sense
I/O
Ground
-
+
Battery
Ignition
1
3
4
2
4.0 A Fuse
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