Step 5-Check The Device Operation - Sierra Wireless AirLink LS300 Hardware User's Manual

Example: AirLink device configured in ACEmanager
to send an email when storage tank is
almost empty (5 V on pin)
Analog voltage input
available on connector
Pin 4
Note: Pin 4 has a maximum rating
of 30 V, 50 µA
Rev 5 Apr. 13
The initial state of the digital output when the device is rebooted is configurable in
ACEmanager.
Note: Some solenoids/relays include a flyback diode built into the unit. For those that do
not, Sierra Wireless recommends a flyback diode with a voltage rating at least double the
relay voltage and a current rating at least double the relay ON current to avoid damage to
the LS300 input. A common 1N4007 will work for most applications.
Analog Input
As an analog input (voltage sensing pin), it monitors voltage changes in small
increments. This allows you to monitor equipment that reports status as an
analog voltage.
Pin 4 detects inputs of 0–30VDC across the pins to ground. When used with a
sensor to transform values into voltages, the pins can monitor measurements like
temperatures, pressures or the volume of liquid in a container.
ACEmanager can transform these voltages into meaningful values. You can also
use the Event Reporting feature in ACEmanager to configure reports to be sent
when an analog threshold is crossed. For more information, refer to the ALEOS
Software Configuration User Guide (I/O Configuration and Events Reporting
chapters).
Figure 3-7: Analog Voltage Input Operation
Step 5—Check the device operation
1. When power is supplied to the AirLink device, it powers up automatically, as
indicated by the flashing LEDs. If it does not turn on, ensure that the:
· Power connector is plugged in
· Power cable is connected power (line or battery power)
· Power is turned on or the battery is fully charged
· Ignition Sense (pin 3) is connected to the battery or power source (see
4—Connect the Power
Storage tank
level sensor
on page 21 for details)
Installation and Startup
Level Full
Sensor output
voltage = 20 V
Storage
Tank
Level Almost empty
Sensor output
voltage = 5 V
Step
25