Nova Biomatique Intelligent Growing Systems iGS-110, User Manual

Displaying the Dynamic Differential

The Dynamic Differential is the window of operation that the controller will
have chosen to optimize setpoint fidelity without provoking annoying repeti-
tive switching or setpoint over and undershoots. The value takes approxi-
mately a full day of normal operation of your grow room to stabilize. The
smaller your Dynamic Differential is, the better the overall grow room equip-
ment is tuned. The Dynamic Differential will vary automatically to change
upon room sizes, heater-cooler power and location, ventilation apparatus,
control sequence and room insulation.

1

- In order to display the current Dynamic

Differential for each controlled output
(Temperature and Relative humidity), depress
repeatedly if necessary the MODIFY key until the
Differential light turns ON. 

The controller will display the Temp Differential if  any Temp sensor is select-
ed and the Relative humidity differential if the Humidity sensor is chosen (use
SENSOR SELECT key). 

PART-

2

MORE ON THE iGS-

110

Temperature Control sequence

When the controller is configured heat your grow room, it will activate both
slots of output 

1

(Temp control) when the sensor detects levels under the

user defined levels minus the Dynamic Differential. The Dynamic Differential
is subtracted to the setpoint to determine at what level the heating equip-
ment has to stop to attain the actual valid setpoint without over or under-
shooting (warm air might move slowly in your grow room). 

When on the other hand the controller is configured to cool down your grow
room, it will activate both slots of output 

1

(Temp control) when the sensor

detects levels over the user defined setpoint plus the Dynamic Differential. The
Dynamic Differential is added to the actual valid setpoint to determine when to
stop the cooling equipment without under or overshooting.

Humidity control sequence

The humidity control loop uses the same algorithm has the Temp control loop.
If configured to dehumidify, the controller will activate output 

2

whenever the

relative temperature rises over the user setpoint plus the Dynamic differential
value. If configured to humidify, the controller will activate output 

2

whenever

the relative temperature falls below the user setpoint minus the Temp
Dynamic Differential.

Keep in mind that if a special timer delay or priority mode was selected (see
output 

1

and 

2

operating modes) the outputs will respond according  to the

operating mode (extra OFF timer delay, Temp or RH output priority).

8

When you chose the controller to control RH or Temp levels day and night the
controller will use the setpoint value during the day and the night setpoint
value during the night even when in day and night modes.

Selecting the temperature units

The iGS-

110

is able to display the current temperature, setpoint and logged

data values either in Celsius (  C) or Fahrenheit (  F). The user selected units
will be maintained even if the controller is turned OFF and ON again, as well
as all other user settings. 

The procedure below will allow the user to select his preferred temperature
units (default is   C). Once selected, the actual temperature will still be dis-
played either in   C or   F at all times, as selected by the SELECT SENSOR key ;
however, all MODIFY functions will be available only when the user preferred
unit light (Temp   C or Temp   F) is ON, as chosen by the SELECT SENSOR
key.To change the temperature units : 

To set the iGS-

110

to Celsius, depress the SELECT SENSOR key until the TEMP  C

light is ON, and make sure that all MODIFY lights are OFF. Then keep the MODI-
FY key depressed for 

3

seconds until you see [

Cels

] on the display. You can then

release the key and the iGS-

110

will resume operation displaying all tempera-

ture values in Celsius.

To set the iGS-

110

to Fahrenheit, depress the SELECT SENSOR key until the

TEMP F 

light is ON, and make sure that all MODIFY lights are OFF. Then keep

the MODIFY key depressed for 

3

seconds until you see [

Fahr

] on the display.

You can then release the key and the iGS-

110

will resume operation display-

ing all temperature values in Fahrenheit.

Adjusting day and night setpoint values

To set your target Temp and RH levels for the daytime :

1

- Depress repeatedly if necessary the MODIFY

key until the SETPOINT light comes on. The SET-
POINT value will be displayed according to which
sensor is selected (use the SENSOR SELECT key).

2

- To change that value, simply use the UP and

DOWN keys. 

Holding the UP or DOWN button for more than 

4 

seconds will increase the

speed at which the value will be modified. 

To set your target Temp and RH levels for the night :

1

- Depress repeatedly if necessary the MODIFY

key until the NIGHT SETPOINT light indicator
turns on. The night setpoint value will be dis-
played according to which sensor is selected (use
the SENSOR SELECT key).

2

- Use the UP and DOWN keys to change the cur-

rent NIGHT SETPOINT value.

Display functions

The controller will flash the temperature (output 

1

) or relative humidity (out-

put

2

) readings on the display when their respective output is activated.

7

Setpoints adjustments for temperature control is adjusted through 

0.5  C/1.0   F

increments. Going over 

50  C/ 122  F

will rollover the display to 

- 20  C/-4  F

.