Applications Guide Tracer Graphical Programming - Trane

®
Chapter 7 Constant-volume AHU example
(CNT-SVP01A-EN). The SCC profile provides the configuration data
listed in Table 20.
Table 20: Network configuration inputs for the SCC profile
nci SNVT Notes
nciBypassTime SNVT_time_min Occupied bypass time
nciOAMinPos SNVT_lev_percent Outdoor air damper minimum position
nciSpaceCO2Lim SNVT_ppm Space CO 2 limit
nciSpaceRHSetpt SNVT_lev_percent Space relative humidity setpoint
nciSetpoints SNVT_temp_setpt Provides default unoccupied, occupied,
and occupied standby cooling
and heating setpoints
The air-handling unit receives the space relative humidity from a peer
Comm5 device, a Tracer MP503 I/O module in this scenario. The space
relative humidity is sent to the Tracer MP580/581 controller through a
network variable input nviCurrent_mA01. See Table 21 for more information.
Table 21: Network variable inputs
nvi SNVT Notes
nviCurrent_mA01 SNVT_amp_mil Space relative humidity, measured
in current (mA)
Note:The Tracer MP503 module communicates this value that must be converted to
units of humidity at the Tracer MP580/581 controller using TGP.
Then make sure that the TGP editor is open and ready to go.
152 CNT-APG001-EN