Applications Guide Tracer Graphical Programming - Trane

®
Chapter 7 Constant-volume AHU example
Figure 145: Reset block linear equation plot
• SNVT_amp_mil is not a network variable input (nvi) type that
includes the flag for the Fail block, so use a Between block to check
that the value from the nvi is in a valid range.
➤ Using a Between block
Use a Between block to check an analog value against a range and
then output a binary value accordingly. If the analog value is
between the upper and lower limits, the output is true.
• Use wireless connections to carry the resultant data to the portions of
the program controlling the cooling and heating valves and controlling
the humidifier.
Note:
This module enables or disables only the ability to humidify or
dehumidify. Control of the cooling and heating valves to accomplish
dehumidification is incorporated into the appropriate
modules. Control of the humidifier itself requires a separate
module.
168 CNT-APG001-EN