960-3100-00
iPonic 614 Installation Manual
27
To Disable or Re-Enable Fan Cut
Menu->SystemSetup->6. Advanced->Global CO2 Settings->button 2 to change Fan Cut settings->choose
enable/disable->ok (current setting will display)
Light Sensor
By default the CO
2
is cutoff when lights are cut off (i.e. at night.) If your light banks do not run off of the
controller, you may want the light sensor on the sensor module to detect whether there is light in the
photosynthesis range in the growing environment and rely on that reading to determine whether CO
2
equipment should be engaged or not. Once CO
2
cut-off with light meter is enabled, a light threshold of
100 W/m
2
will be tolerated before the CO
2
equipment will be allowed to cycle on. A deadband of 50 W/m
2
will prevent the CO
2
equipment cycle from shutting off again until the light level falls 50 W/m2 below the
light threshold.
Enable CO
2
Shutoff in Low Light
Menu->SystemSetup->6. Advanced->button 8 for More-> button 8 for CO2 Light CutOff->2Light Cut Off-
>select “CO2 Cut off with light meter”->OK
Change Light Threshold and Deadband for CO
2
Shutoff in Low Light
Menu->SystemSetup->6. Advanced-> button 8 for More-> button 8 for CO2 Light CutOff ->3Light
Threshold->select your light threshold (press 1 to change increment)->OK
Menu->SystemSetup->6. Advanced-> button 8 for More-> button 8 for CO2 Light CutOff ->4Light
Deadband-> select your light threshold (press 1 to change increment)->OK
Fuzzy Logic
Employing “Fuzzy Logic” with your controller’s advanced settings will allow your CO
2
target to be met
based on the amount of need, rather than treating every situation where the CO
2
falls below your setpoint
target as equal. This is done by taking into consideration the size of the CO
2
error (in parts per million)
and assigning that error range a ratio which translates to the actual percentage of time the CO
2
equipment is on during a CO
2
cycle. When you enable Fuzzy Logic, there is already a default program in
the controller’s system to get you up and running
Amount Error
(Short of CO
2
Target)
Delay Ratio
(Ratio On to Off time during Cycle Period)
>50ppm
0.05
>75ppm
0.10
>150ppm
0.40
>250ppm
0.75
>500ppm
1.00
Figure 2.2 Default Fuzzy Logic Settings
When you enable Fuzzy Logic you will also enable a CO
2
cycle period that you will need to set. The ratio
of time the CO
2
tank is on to time off will always be a function of the amount of CO
2
error measured by
the sensor. This CO
2
budgeting will keep you from constantly overshooting your CO
2
target.
Enabling and Creating Your Fuzzy Logic Settings
Menu->SystemSetup->6. Advanced->button 7 for Adv. Setpoint Settings->4CO2 Fuzzy Settings
(enable/disable)->save if prompted->button 1 to Enable/disable CO2 Fuzzy->select the error size or delay
ratio you would like to change with buttons 5, 6, 7 & 8->press 2 to edit value (press 1 to change
increment)
Setting Your Fuzzy Logic Cycle Period
Menu->SystemSetup->6. Advanced->Global CO2 Settings->6CO2 Cycle Period->Set Time with buttons
1, 2, 3 & 4 and wheel
