Spraying Systems AUTOJET 1750+ - Duty Cycle Control

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7.6 DUTY CYCLE
Duty cycle represents the rao of the spraying "on" me to the "o" me, which results in some percentage of the
maximum possible (connuous) ow through the nozzle. The duty cycle sengs allow you to select the source and
enter sensor default values. Selecng 4-20mA signal will allow you to congure your sensor. The other opon is remote
setpoint, which requires a cable to connect to an external PLC. When connected correctly, the Duty Cycle on the
controller display adjusts according to the input signal, 4mA corresponds to 0% duty cycle and 20 mA corresponds to
100% on.
DUTY CYCLE SETTINGS
Select whether the duty cycle source will be local or 4-20mA signal.
• Sensor Value at oset: The minimum value of percent that oset the starng point to control Duty Cycle.
• Sensor Value at 20mA: The maximum value of setpoint for the remote duty cycle to control. Set the value at 20mA
to be 100% or another value depending on your trigger source.
• Sensor Oset: The minimum level of the sensor oset can control usually starng from 0mA or 4mA. Set the sensor
Oset to match the baseline mA value of your sensor (lowest value).
• Filter Time: Used to control interference/noisy signals from sensor.
Assembly Specicaons:
•
Panel connecon: 4-20mA
•
Part number: LE00M8M5M
•
Cable: 16.4 . [5 m] cord
•
Flying Leads
•
Connector – M8 4 pin male
—DO2 represents your spray status in the form of an On/O signal depending on whether the 1750+ is acvely
spraying. This can be used to monitor the acve status externally.
REMOTE SETPOINT (AI2) [0-20MA] DUTY CYCLE
The duty cycle setpoint is mulplied by the value of the input to calculate the actual duty cycle. The following equaon
represents the calculaon made by the 1750+.
Duty Cycle Sengs
Color Code: Duty Cycle
Pin# Color Descripon
1 Brown +24 VDC
2 White DO2
3 Blue 0 VDC
4 Black 4-20mA
If your 0 VDC is coming from a
power supply outside of our panel
(PLC), connect it to this wire—#3