Grain Systems PNEG-1935 - Manual (Page 39)

6. Moisture Control Options
PNEG-1935 Vision Hybrid for Portable Dryers 39
2 Speed Temperature
When to Use:
For use when good management is available and a quick reacting time is desired in all heat or dry and
cool operation.
How it Works:
The user should stabilize the dryer with the Unload switch in the “MANUAL” position. It is imperative that the
dryer is outputting the desired moisture content grain before switching the unload to the “AUTO” position.
The user specifies two (2) desired meter roll speeds (Low and High) and a grain temperature setpoint for
this scheme. If the grain temperature sensors on the dryer report a temperature 1° above the setpoint, the
dryer will select the fastest unload rate (High). If the sensor reads 1° below the setpoint, the controller will
run at the slower speed (Low).
There is also an “ON/OFF” option associated with the 2 Speed. The user only specifies one unload rate
(ON) and the controller knows the other speed is zero (OFF). If the temperature sensor reads 1° above
the setpoint, the metering rolls will run at the “ON” speed. The metering rolls are turned OFF if the
temperature falls below the setpoint.
NOTE: A “Max Grain Temp” is available for this scheme. By enabling this feature, the dryer will shutdown
and issue a warning if the grain temperature exceeds the “Max Grain Temp” value.
Setup Procedure
1. Press the “Stop” button on the control panel if the dryer is running.
2. From the “Setup” screen, select “Drying Mode”, then “Continuous Flow”.
3. From the “Drying Mode Selection” screen, select “M/C Setup” to access “Continuous Flow Setup”.
4. Select “Temperature” from the “Continuous Flow Control Schemes” group.
5. If desired, enable the “Max Grain Temp” safety.
6. Select “2 Speed” from the “Temp Based Options” group.
7. Press the “Accept” button and return to the “Default Operation Screen”.
8. Press the “Meter Roll Speed” adjustment knob to access the “Modifying Meter Roll Speed
Setpoints” screen.
9. If the “ON/OFF” option is desired, verify the “ON/OFF” check box at the top right of the window is
selected. If “ON/OFF” is not desired, make sure the “2 Speed” check box is selected.
10. Press the “Meter Roll Speed” adjustment knob until the “HIGH SP” bar is colored red. Adjust the
“HIGH SP” by turning the knob until the desired setpoint is reached.
11. If “ON/OFF” is selected, skip to the next step. Depress the knob until the “LOW SP” bar is colored
red. Turn the knob until the setpoint is attained.
12. Press “Accept/Exit”.
13. From the “Default Operation Screen”, press the “M/C” button and enter a grain temperature setpoint.
14. Turn the “Unload” switch to the “AUTO” position.
15. Press the “Start” button on the control panel.