Applications Guide Tracer Graphical Programming - Trane

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Reviewing the sequence of operation
The corresponding data definition is presented in Table 23 and Table 24,
and a wiring diagram is presented in Figure 165 on page 198.
Table 23: Modified constant-volume AHU inputs and outputs data definition
Inputs and
outputs
Type Name Notes
Inputs 1 Analog Space Temp Universal input configured as thermistor or RTD
2 Analog Thumbwheel SP Universal input configured as thermistor or RTD
3 Analog Mixed Air Temp Universal input configured as thermistor or RTD
4 Analog Discharge Air Temp Universal input configured as thermistor or RTD
5 Analog Outdoor Air Temp Universal input configured as thermistor
6 Analog Duct Humidity
7 Binary Low Temp Detect
8 Binary Run/Stop Interlock
9 Binary Occupancy/Generic
10 Binary Supply Fan Status
11 Binary Filter Status
12 Binary Exhaust Fan Status
Pressure Duct Static Pressure*
Binary outputs 1 Supply Fan Start/Stop
2 Exhaust Fan Start/Stop
3 Not Used
4 Not Used
5 Not Used
6 Alarm Output Status/custom alarm indicator
Analog outputs 1 Supply Fan Speed* Analog output configured as voltage, 0–10 V
2 Cooling Valve Position Analog output configured as voltage, 0–10 V
3 Heating Valve Position Analog output configured as voltage, 0–10 V
4 Face and Bypass Damper* Analog output configured as voltage, 0–10 V
5 OA Damper Position Analog output configured as voltage, 0–10 V
6 Humidifier Analog output configured as voltage, 0–10 V
* These inputs and outputs are not used in this program but are often used in air-handler programs.
Note: The inputs and outputs in this table are configured so that a Tracer AH540 main logic board could be replaced with a Tracer
MP580/581 board, except for the Mixed Air Temp, which is input 6 on the Tracer AH540.
Table 24: Modified constant-volume AHU variables data definition
Variable Name Notes
Tracer Summit binary variables
Economizer Enable
BAS Setpoint Enable
Alarm Reset (BAS)
CNT-APG001-EN 195