41
GalStar
Instruction 1.0
4. Advanced Operation
Screen Explanation:
Only the relevant data appears.
•
Water M3 (THG):
The water accumulation in cubic meters (THG) since the date shown below.
•
Fert A-C Litre (gallon):
The fertilizer accumulation of fertilizer pump No.1 of the head since the
date shown below.
•
Time Hours:
The time that the valve has been operating since the date shown below.
•
Accum. St. Date:
The date that the accumulation started.
•
Restart Accum.:
All values are reset to zero and the date is assigned to today.
Valves Faults:
Press “Valves Faults” in the “Valves Status -13” screen to access the “Valves Faults
– 136” screen. This screen displays the list of faults. The possible faults can be:
Flow Fault, No
Water Pulse, Fert. Fail, Fert. Not Finish, EC Fail, pH Fail.
The faults appear when relevant.
Valves Manual:
Press “Manual” in the “Valves Status -13” to access the “Valves Manual – 137”
screen. There is only one parameter in this screen-
Valve- Man.Oper.
The options are:
Automat,
Open, Close
. This action is only on the valve solenoid and doesn’t open the irrigation. It is used for
checking the system.
Fertilization:
The method of operating fertilizers in the Gal-Star controller is by programming
“Fertilizer Programs” and assigning them to an “Irrigation Program”.
EC/pH Control:
The Gal-Star controller enables fertilization with EC/pH control. The EC/pH
correction is made by “looking” at the EC/pH reading and comparing it with the target value that is
programmed in the “Fertilizer Programs”. The fertilizer starts with an injection ratio as programmed in
the “Fertilizer Program” and increases or decreases according to comparison of the actual readings
with the target. For example: If the EC reading is below the target the controller increases the fertilizer
injection of the fertilizer pumps defined as EC. The EC rises accordingly. The same applies (in the
opposite direction) for the pH reading. For example: If pump A is set to EC, 2.5 liter per M3 and pump
B is set to EC 5 liter per M3 (Gallon\THG) and pump C is set to pH 1 liter per M3 (Gallon\THG)and
the target is EC 1.8 and pH 5.8. If the actual reading is EC – 1.5 and pH – 5.5 then the EC pumps
(A and B) will increase the injection rate and the pH pump C will decrease the injection rate. The
percentage of correction is according to PID. Assuming that the percentage is 30% then pump A will
increase its dosage to 3.25 liter per M3 (Gallon\THG), pump B will increase its dosage to 6.5 liter per
M3 (Gallon\THG) and pump C will decrease its dosage to 0.77 liter per M3 (Gallon\THG).
