Applications Guide Tracer Graphical Programming - Trane
Applications Guide Tracer Graphical Programming - Trane
Applications Guide Tracer Graphical Programming - Trane
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®<br />
Chapter 8 Constant-volume AHU with warm-up, pre-cool, and communications<br />
Table 24: Modified constant-volume AHU variables data definition (continued)<br />
Variable Name Notes<br />
Local binary variables Supply Fan Failure Sourced from a program<br />
Exhaust Fan Failure<br />
Sourced from a program<br />
Sensor Failure<br />
Sourced from a program<br />
Duct Humidity Limit Sourced from a program<br />
Low OA Temp Alarm Sourced from a program<br />
Fan Failure Reset<br />
Sourced from operator display and a program<br />
Alarm Reset<br />
Sourced from operator display and a program<br />
Manual Reset Alarm Sourced from a program<br />
Auto Reset Alarm<br />
Sourced from a program<br />
Thumbwheel SP Enable Sourced from operator display<br />
Heat/Cool Mode<br />
Sourced from a program<br />
OK to Economize<br />
Sourced from a program<br />
Humidify<br />
Sourced from a program<br />
Dehumidify<br />
Sourced from a program<br />
Night Heat/Cool<br />
Sourced from a program<br />
Warm-Up<br />
Sourced from a program<br />
Pre-Cool<br />
Sourced from a program<br />
<strong>Tracer</strong> Summit analog variables Not Used<br />
Local analog variables Space Temp SP (OD) Setpoint sourced from the operator display<br />
Eff Occ Cool SP<br />
Sourced from a program<br />
Eff Occ Heat SP<br />
Sourced from a program<br />
Effective Cool SP<br />
Sourced from a program<br />
Effective Heat SP<br />
Sourced from a program<br />
Economizer Changeover SP Sourced from the operator display<br />
Discharge Air SP<br />
Sourced from a program<br />
Low OA Temp SP<br />
Setpoint sourced from the operator display<br />
Mixed Air Temp SP<br />
Setpoint sourced from the operator display<br />
Dehumidification SP Setpoint sourced from the operator display<br />
Humidification SP<br />
Setpoint sourced from the operator display<br />
Ex Fan OA Damper SP Setpoint sourced from the operator display<br />
Ex Fan OA Damper Dbd Setpoint sourced from the operator display<br />
Before you write the program, configure these inputs, outputs, and variables<br />
in your <strong>Tracer</strong> MP580/581 controller. Because you are programming<br />
a constant-volume air-handling unit, set the controller to use the Space<br />
Comfort Controller (SCC) profile. For more information about configuring<br />
the controller, including setting it to use the SCC profile, see the <strong>Tracer</strong><br />
MP580/581 Programmable Controller <strong>Programming</strong> guide<br />
(CNT-SVP01A-EN). The SCC profile provides the configuration data<br />
listed in Table 25 on page 197, and the network variable inputs and out-<br />
196 CNT-APG001-EN
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