SIERRA WIRELESS AirLink LX40 Enterprise LTE Router User Guide

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AirLink LX40 Series Hardware User Guide  

Wiring Diagrams  

If you do not use the AC power adapter to power the LX40, you can wire the supplied DC  

cable to your power supply. You have various options for wiring power to the LX40,  

depending on your application.  

Note: If using PoE as a power source, connections to the 4-pin power connector are not required.  

Basic Installation with DC Power  

For installations using DC power, connect the wires as shown in the figure below. You can  

configure Low voltage disconnect to force the router into Standby mode when the voltage  

is low. Voltage is monitored on Pin 1 (red wire).  

7.54AAFfuussee  

LX40 router  

1 Power  

DC Power Source  

DC power source  

3 On/Off  

1

Ignition Sense  

4 I/O  

Power  

LX40  

3

4

2 Ground  

I/O  

2

Ground  

Figure 2-9: Fixed Installation without I/O  

•

Pin 1 (Power) —Use the red wire in the DC cable to connect Pin 1 to the power  

source. Include a 4 A, fast blow fuse, recommended to have no more than 10% de-  

rating over the operating temperature range, 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 Step 2—Mount and Ground the LX40 Chassis on page 14.  

Pin 3 (On/Off control)—Connected to power  

Basic Installation with I/O Input Triggered by Standby Mode  

If you want to use the I/O to monitor an external device such as a motion detector, remote  

solar panel, or a remote camera, refer to Figure 2-10. You can configure the I/O line to  

wake the router up for a configured length of time, and use low voltage disconnect to put  

the router in Standby mode if the voltage falls below a configured value.  

7.5 A Fuse  

4 A fuse  

LX40 router  

1 Power  

DC power source  

DC Power Source  

3 On/Off  

1

Power  

LX40  

3

Ignition Sense  

I/O  

4 I/O  

Motion Sensor  

4

2 Ground  

2

Ground  

Motion sensor  

Figure 2-10: Fixed Installation with I/O  

Rev. 4 January 2022  

22  

41112510  

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General	Details
Name	SIERRA WIRELESS AirLink LX40 Enterprise LTE Router User Guide
Make	SIERRA WIRELESS
Language	English
Filetype	PDF (Download)
File size	0.96 MB

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