Ignition Sense (Pin 3); General Purpose I/O (Pin 4) - Sierra Wireless AirLink LS300 Hardware User's Manual

Table 3-2: Power Connector Pin Description
Pin Name
Cable Wire Color
3 IS
4 GP I/O
Rev 5 Apr. 13
Associated DC Description
White Ignition Sense: Connected to external switch or VCC. It can be
used as the trigger for the low power mode. For more
information, see
Green User configurable digital input/output or analog voltage sensing
input. Connect to switch, relay or external device. Maximum
rating is 30 V, 150 mA. For more information, see
Purpose I/O (Pin 4)

Ignition Sense (Pin 3)

This pin (white wire on DC cable) must be connected and receiving the
appropriate level of input voltage for the device to power on. Either:
• Combine it with the red wire from Pin 1 and connect both to the positive
battery terminal. Sierra Wireless recommends fusing the power supply on
Pin 1. See Fusing
• Connect the white wire to a switch on an external device you want to monitor,
and the red wire from Pin 1 to the positive battery terminal.
Once the AirLink LS300 is powered on, you can configure it to go into low power
mode when the switch being monitored is turned off. For details on configuring
Low Power mode, refer to the ALEOS Software Configuration User Guide
(Services chapter).
If desired, you can also configure the LS300 to notify you when it goes into Low
Power mode. For details, refer the ALEOS Software Configuration User Guide
(Events Reporting chapter).

General Purpose I/O (Pin 4)

This pin is a digital input/output (green wire on DC cable).
Pin 4 can:
• Monitor digital inputs and outputs
• Drive a relay
• Monitor analog input
It has a maximum rating of 30 V and 50 mA sink current. For information on
configuring Pin 4 (Digital Input/Relay Output 1 in ACEmanager) refer to the
ALEOS Software Configuration User Guide (I/O Configuration chapter).
You can use Pin 4 in conjunction with events reporting to configure the LS300 to
send a report when the state of the monitored device changes, for example when
a switch is opened or closed. For more information, refer to the ALEOS Software
Configuration User Guide (Events Reporting chapter).
Ignition Sense (Pin 3)
on page 23.
on page 21.
Installation and Startup
on page 23.
General
Type
I
I/O
23