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7.6 DUTY CYCLE
Duty cycle represents the ratio of the spraying "on" time to the "off" time, which results in some percentage of the
maximum possible (continuous) flow through the nozzle. The duty cycle settings allow you to select the source and
enter sensor default values. Selecting 4
-
20mA signal will allow you to configure your sensor. The other option 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 offset
: The minimum value of percent that offset the starting 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 Offset:
The minimum level of the sensor offset can control usually starting from 0mA or 4mA. Set the sensor
Offset to match the baseline mA value of your sensor (lowest value).
•
Filter Time:
Used to control interference/noisy signals from sensor.
Assembly Specifications:
•
Panel connection: 4
-
20mA
•
Part number: LE00M8M5M
•
Cable: 16.4 ft. [5 m] cord
•
Flying Leads
•
Connector –
M8 4 pin male
—DO2 represents your spray status in the form of an On/Off signal depending on whether the 1750+ is actively
spraying. This can be used to monitor the active status externally.
REMOTE
SETPOINT (AI2) [0
-
20MA] DUTY CYCLE
The duty cycle setpoint is multiplied by the value of the input to calculate the actual duty cycle. The following equation
represents the calculation made by the 1750+.
Duty Cycle Settings
Color Code: Duty Cycle
Pin#
Color
Description
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
