Dickey-John Control Point - Granular Channel Configuration

OPERATOR’S MANUAL
Control Point ®
11001-1489-201702 Rev B
INTRODUCTION / 3
INTRODUCTION
The DICKEY-john Control Point
®
system uses three-channels (three
separate controlled servo loops) on spreader vehicles to simultaneously
control the spreading of granular and liquid ice-control materials. Two
channels control granular and liquid application rates and the third channel
precisely controls spinner speed to maintain even material coverage over
the desired spread width. The dispensing rate varies directly with ground
speed to ensure accurate product application.
Material can also be spread at a preset “BLAST” application rate. This is
normally a very large rate to instantly adjust the target APR (application
rate) coverage for bridges and intersections with a much heavier amount of
material.
Figure 1 illustrates the Console, Switch Module, and Keyboard.
Figure 1
System Components
GRANULAR CHANNEL CONFIGURATION
The granular channel controls the amount of material dumped onto the
spinner plate(s). The Control Point
®
monitors a tachometer-style feedback
sensor located on the V-box drag chain or tailgate auger. A resultant drive
signal adjusts the conveyor mechanism speed to deliver the target
application rate (APR) by regulating the hydraulic valve position.
435
SALT
LBS/MILE
LIQUID
GAL/TON
MPH
0% 100%
SPREAD WIDTH
8 MAR
12:25:PM
1
2
3
4
5
6
7
8
9
0
-
=
Q
W
E
R
T
Y
U
I
O
P
[
]
\
A
S
D
F
G
H
J
K
L
;
'
Back
Space
Z
X
C
V
B
N
M
,
.
/
RS232
Connector
for
Computer
Display Console
Keyboard
Connectors
Switch
Module
Keyboard
Connects to
Rear side of Console
OFF AUTO UNLOAD
MASTER
0
0
40
60
80
100
BLAST