5. Control System
18
PNEG-696
TopDry Series 2000 Autoflow
Aeration Fan Bypass
- Allows the aeration fan to remain running after the dryer has shut down. Use the
increase and decrease buttons to toggle between enabled and disabled. When the aeration fan bypass is
enabled, the aeration fan will remain running after the dryer has stopped if the Aeration switch ON the
dryer front panel is placed in the “ON” position. When the aeration fan bypass is disabled, the aeration fan
stops with the dryer.
Number of Fill Systems
- Use the increase and decrease buttons to toggle between one or two fill
systems. Press the enter button when the number of fill systems displayed on the screen equals the
number of fill systems that the computer will be controlling. If one fill system is selected only one fill system
will be controlled by the computer. The High Level SW delay will be used to delay the shut off of the fill
system after the drying chamber is full. The Fill 1 delay will have no effect on the operation of the fill
system. If two fill systems are selected two (2) fill systems will be controlled by the computer. Both the High
Level SW delay and the Fill 1 delay are used by the computer to delay the shut off of the fill systems after
the drying chamber is full.
Select Dryer Type
- Use the increase and decrease buttons to select one of the four (4) model types that
fits your system. The four (4) models are as follows:
1. AF2 - Autoflow with two (2) main drying fans
2. AF1 - Autoflow with one main drying fan
3. AB2 - Autobatch with two (2) main drying fans
4. AB1 - Autobatch with one main drying fan
Most systems will be either an Autoflow with one fan or an Autoflow with two (2) fans. Press the enter
button when the correct model number is displayed.
Select Temp Scale
- Use the increase and decrease buttons to toggle between Fahrenheit or Celsius.
Press the enter button when the correct scale is displayed.
Burner Cycle
- ON/OFF or High-Low cycle.
Burner Differential
- Use the increase and the decrease buttons to change the burner differential.
The burner differential is the span in degrees between high-fire and low-fire when the high/low option has
been selected. When the temperature in the dryer reaches the plenum temperature set point plus the
differential the burner will cycle from high-fire to low-fire. When the temperature in the dryer falls to the
plenum temperature set point minus the differential the burner will cycle from low-fire to high-fire.
Example:
Plenum temperature set point = 180°, temperature differential set to 3°. The burner will cycle
from high-fire to low-fire at 183° and will cycle from low-fire to high-fire at 177°. When burners are set to,
Diesel
- Select for diesel burners only.
Plenum High-Limit
- Setable high-limit that will shut the dryer down when met. Default is 20° above set
plenum set point.
Grain Temp High-Limit
- Setable high-limit that will shut the dryer down when met. Default is 30° above
set plenum set point.