Setting Up Liquid Configuration; Configuring Liquid Channel For Prewet Yes/No - Dickey-John Control Point Operator's Manual

OPERATOR'S MANUAL
Figure 25. Configuring Liquid
Channel for PREWET YES/NO
CONTROL POINT™
11001-1100-199904 Revision A
SETTING UP LIQUID CONFIGURATION (F5)
Configuration parameters specify types of actuators and sensors used
including performance specifications. To prepare for system calibration,
the liquid configuration parameters for each liquid material used must be
verified or programmed. These parameters do not change unless system
hardware changes or related calibration routines are rerun.
1. From the keyboard, press Function key F5 to obtain the
LIQUID CONFIG screen (See Figure 25).
Four (4) liquid materials names appear each followed by the word
ENABLED or DISABLED. Products are enabled/disabled from the
LIQUID APPL RATE screen (F4).
2. Select a material using the corresponding number key.
See Figure 25.
3. Edit the parameters on the screen.
Check each following item the desired setting.
a. PRE WET - If spraying with the pre-wet spray bar, enter Y
(YES). If used with the anti-icing boom, enter N (NO).
b. K-FACTOR (Flowmeter Constant) - Represents the number of
flowmeter pulses generated per gallon (P/GAL) of dispersed
liquid (for pre-wet and anti-icing liquids).
The K-FACTOR number stamped on the flowmeter body is
sufficiently accurate for keyboard entry if the viscosity of the
liquid is near that of water.
If the flowmeter constant is unknown, leave the displayed default
value shown. A corrected value automatically calculates and
enters during LIQUID CALIBRATION.
c. PRESSURE - N (NO) indicates a pressure transducer is not used.
Y (YES) indicates a pressure transducer is present and additional
items appear on the menu (See items k through p below and
Figure 26).
d. SRVO DRV (Servo/Proportional) - If using a servo drive, press
Y (YES). For a proportional valve, answer N (NO).
e DRV FREQ (Drive Frequency) - Represents the valve manufac-
turer's suggested drive frequency, as shown on the valve specifica-
tion sheet. The rated drive frequency for the DICKEY-john servo
valve is 100 Hz.
f. PWM OFFSET - Represents the valve operating range starting
point (position flowmeter begins generating pulses). This constant
automatically calculates and enters during a LIQUID SYSTEM
RESPONSE routine (F11-2 and F11-3) or can be keyboard
entered. Anti-icing boom liquids may have a different offset
constant than pre-wet bar liquids because of different plumbing
components.
KEYBOARD PROGRAMMING/ 25