Grain Systems PNEG-1851 - Manual (Page 44)

Chapter 5: The Drying Modes
Figure 5-3 Speed versus temperature relationship for the 2-speed temperature control scheme
The 5-Speed Control Scheme
In the 5-speed control scheme, you enter the following parameters:
• The reference speed
• The grain temperature setpoint
• The metering roll speed’s inner offset
• The metering roll speed’s outer offset
• The grain temperature’s inner offset
• The grain temperature’s outer offset
As shown in the following figure, the 5-speed temperature control scheme uses five speed settings to
obtain the target moisture content, and the speed that is selected is dependant on the measured grain
temperature. If the grain temperature exceeds the measured temperature, higher speeds are automatically
selected. Conversely, if the grain temperature is below its setpoint, lower speeds are automatically
selected. This control scheme expands on the 2-speed scheme, creating a more dynamic moisture control
scheme that can accommodate a wider variation of incoming grain moisture. See
Setting the 5-Speed
Temperature Scheme in Continuous Flow, page 60 for details on how to set up this control scheme.
44 PNEG-1851 Vision N2