Basic Rooftop Focus Guide.pdf - ProLon

Basic Rooftop Controller
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• Differential: The differential used for the Analog Output 1 heating stage. Only enabled
if the Analog Output 1 Function is set to “Heating ONLY”.
Units MIN MAX Default
% 8 99 N/A
• Enable Pulsing: Analog Output 1 will use pulse width modulation with a pulse width
period of 1 second. Only enabled if using proportional. Pulse width modulation is
designed for solid-state relay-equipped electric duct heaters.
• Enable Reverse Acting: The output voltage will be inversely proportional to the
calculated output value
2.1.5.3 Preheating
Preheating is calculated using a PI control loop (proportional and integral) to achieve the
desired setpoint.
• Setpoint: The setpoint used for the Analog Output 1 preheating control sequence. The
Master Controller maintains the supply air at this value. Disabled if the Analog Output
1 Function is set to “OFF” or “Heating ONLY”.
Units MIN MAX Default
°C 15 27 21.5
°F 59 80.6 70.7
• Proportional: The proportional band used to calculate the proportional component for
Analog Output 1 preheating. Disabled if the Analog Output 1 Function is set to “OFF”
or “Heating ONLY”.
Units MIN MAX Default
°C 0 50 20
°F 0 90 36
• Integral: The integral value used to calculate the integral component for preheating. It
defines the amount of time required for the integral component to add 100% to the
output due to an error of 1 °C. Disabled if the Analog Output 1 Function is set to
“OFF” or “Heating ONLY”.
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