Sierra Wireless Airlink GX450, Руководство пользователя по оборудованию

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AirLink GX Series Hardware User Guide
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I/O X-Card Analog Voltage Input Pins
Pins 7, 8, 14 and 15 are the analog voltage sensing pins configured in
ACEmanager. Analog inputs monitor voltage changes in small increments. This
allows you to monitor equipment that reports status as an analog voltage. You can
use volts as the units reported or you can use the ACEmanager I/O Configuration
screen to convert voltage to the desired units of measurement. 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.
The pins have a maximum rating of 30 V, 200 µA.
These pins detect inputs of 0–30 VDC 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. In ACEmanager, events
reporting tells the device to perform an action when a specified voltage is
detected.
Figure 2-27: I/O X-Card Analog Voltage Input Operation
Table 2-7: I/O X-Card Analog Voltage Input Pins
Pins Name Specification Parameter Min Typical Max Units
7
8
14
15 AIN[1...4] Voltage range VADC 0 — 30 V
Input leakage current — — 200 µA
Input capacitance CIN — 30 — pF
Error 0 2.5 5 %
Level Full
Sensor output
voltage = 20 V
Level Almost empty
Sensor output
voltage = 5 V
Storage
Tank
Storage tank
level sensor
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
pins 7, 8, 14, 15
Note: Pins have a maximum rating
of 30 V, 200 µA