iGrow 1800 Installation Guide
Page79
Link4 (714) 524-0004
Light Equipment
The iGrow 1600/1800™ can be used to control lights (typically HID) in the greenhouse. There are
four
operational modes that you can program. These are:
•
Supplemental
•
Scheduled
•
Cyclic
•
Daily Light Integral (DLI)
06 HID Light
Select Operational
Mode:
Supplemental
You can press the enter key and highlight the Mode: With the plus key you can toggle between the four
options.
Supplemental Light control
06 HID Light
Start
at
09:00A
End at 07:00P
Use OLightSensor
No
Supplemental
mode is active between the Start and End times. You have the option of controlling the Start and
End times based on a fixed time window or a relative time window. The latter is relative to the sunrise and
sunset times. When the cursor is over the
at
position and you press the
+
or
–
keys, you will cycle through the
three options: SRise, SnSet, and at.
When you set the parameters up for the first time as shown in the above screen, the Start and End times will be
adjusted every day thereafter, at 2 AM, to track the shortening and lengthening of the days.
Note:
When you select SRise or SnSet,
It does not mean that the Start is exactly at the sunrise time, or the End
at exactly at the sunset times. You can select any time window. What it means is that the daily
adjustment is per the change in the sunrise and sunset time amounts. When the days get longer, the
sunrise rise time will be earlier each day and the sunset time will be later.
If you do not have an outdoor light sensor, then the output functions as a time clock with the optional
astronomical adjustment.
If you
do
have an outdoor light sensor, you can program the following screen:
06 HID Light
Turn ON < 500 W/m2
Turn OFF > 600 W/m2
Time Delay 20 Min
First you will program the light level below which the lights will be turned ON. Then you will program the level at
which they will be turned off. The final parameter is the Time Delay. If the sun were to appear momentarily, you
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