Great Plains DICKEY-john IntelliAg Planter-Drill Control L3 - Manual (Page 85)

OPERATOR’S MANUAL
IntelliAg PDC User 2 & 3
11001-1501-200811
SYSTEM CONFIGURATION / 77
SERVO RETURN
A ball valve or butterfly valve that is driven by an electric motor gearbox and
the valve is installed in the tank return line.
NOTE: DICKEY-john Servo valves
operate at 40 Hz; DICKEY-john
Proportional valves operate at
100 Hz.
PWM (Pulse Width Modulation)
A proportional valve regulating hydraulics and varies the oil flow to a
hydraulic motor proportioned to electric current supplied. This type of valve
consists of a flow cartridge and coil assembly.
Drive Frequency
Drive Frequency specifies the frequency for the proportional or servo valve
that is being used. The recommended setting for this option should be
specified from the specific valve manufacturer.
Input Filter
The Input Filter provides a setting for the amount of filtering applied to the
flow meter feedback frequency of the control channel.
IMPORTANT: It is NOT recommended that the Input Filter be altered.
Any adjustments could result in the channel not
operating properly. If adjustments are made, a valve
calibration must be performed.
K Factor
K Factor specifies how many pulses are produced by the sensor per gallon/
liter of liquid through the flow meter. A flow meter calibration is
recommended for better accuracy. However, if known, the K-Factor can be
entered manually. If not, a flow meter calibration is required. Refer to the
Liquid Flow Calibration section for additional information.
Valve Locking
When enabled, locks the valve into the last operating position whenever the
booms are turned off. This maintains system pressure while turning so a
quick spray pattern may resume after turning is complete. Valve locking is
also used for tank agitation.
Channel Width
Channel Width requires a manual entry of the width of the liquid sprayed.
Precharge Time
Precharge Time is a specified length of time a control channel will operate
or be active with a minimum Precharge ground speed greater than 1. (Refer
to the Ground Speed Setup section for Precharge Ground Speed setup
information).
IMPORTANT: A Precharge number MUST be entered as a positive
number (5.0 seconds) for the system to identify between
a Precharge or Delay Time state.