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SYSTEM-40 BTU MEASUREMENT SYSTEM
5.4 ANALOG OUTPUT
When configured with an auxiliary analog output, the System-40 will have the
ability to send a single analog signal to a remote device or building automation
system. The analog output can be programmed in the commissioning menu for
4-20 mA, 0-5 V, or 0-10 V output types. The factory default is 4-20 mA.
Energy Rate, Volume Rate, Delta Temperature, Supply Temperature and Return
Temperature are available to be mapped to the analog output.
The analog output is configured in the commissioning menu. See 4.2.2.3
AUXILIARY INPUT/ OUTPUT CONFIGURATION SETTINGS for more information.
The minimum value set in programming will be what 4 mA or 0 V is equivalent
to. The maximum value set in programming will be what 20 mA / 5 V / 10 V is
equivalent to.
Example: A 4-20 mA analog output configured as supply temperature with a
minimum of 30 and maximum of 80 will have an output signal of 4-20 mA =
30°F-80°F.
The units of measurement for the analog output will match the LCD description
on the System-40. If the System-40 is equipped with an analog output, the page
which corresponds to the analog output will show the output signal type and
scaling programmed.