1.5 Three Position Selection Switch Wiring
An optional mode selection switch is available with the weatherproof
enclosure. With this switch the user may select either continuous
cleaning, on-demand cleaning, or off. This switch is supplied factory wired
as shown in Figure 4. The switch has a front and rear section. The front
section, consisting of two independant contacts, controls the power to the
board. These contacts must be wired in parallel as shown in the diagram.
The rear section controls the manual override, which when closed will
force the system into a continuousmuct be reconneccted, follow the wiring
diagram.
Caution:
Do not interconnect the low voltage manual override
leads with the power leads. This will destroy the control board
as well as pose a serious shock hazard
2.0 Programming the DCT1000DC Master Controller
We’ve made it easy to navigate the DCT1000DC. Menu items can be
accessed simply by pressing the “SELECT” button. The menu item that
you are currently accessing is indicated by the illumination of an LED. To
change menu items, all you have to do is push “UP” to increase a value
or push “DOWN” to decrease a value. There are no keystrokes that you
need to memorize, special combinations, or passwords that are required.
The master controller is equipped with an on board display and
programming information center. The controller will power-up with the
process indicator illuminated. If a pressure module is installed, the display
will indicate the measured pressure in inches of water (w.c.); otherwise it
will normally be blank.
2.1 • Last Output
The Last Output setup selects the last channel to be activated. When first
selected, the display will flash the last output available in the system. With
single board installations, this will be the number of channels installed,
typically 6, 10 or 22. This value becomes more important when multiple
modules are installed. The last output value flashed will be the sum of all
channels available in the system.
After the last available channel indication has completed, the currently
programmed last channel value is displayed. This value may be changed
using the “UP” and “DOWN” buttons. The minimum value is one while the
maximum value is the maximum number of installed channels, including
all expansion modules.
The default value is the maximum number of channels. Pressing
“SELECT” will change the setup mode to Time Off Setup.
2.2 • Time Off (Sec.)
Time off defines the period of time between solenoid activations when no
channels are enabled. This may be set between one second and 255
seconds. The factory default is 10 seconds. The display will show the
current time off setting when the time off setup mode is entered. The value
may be changed using the Up and Down buttons. Pressing both “UP” and
“DOWN” simultaneously and holding for approximately four seconds will
restore the default value of 10.
2.3 • Time On (msec)
Time On Setup sets the solenoid on time. The display will indicate the
currently programmed time on setting. This is measured in milliseconds.
Using the “UP” and “DOWN” buttons, the value may be changed. The
value may be set between 10 msec and 600 msec in 10 msec increments.
Pressing the “UP” and “DOWN” buttons simultaneously for approximately
four seconds will restore the factory default value of 100 msec. Pressing
the “SELECT’ button will advance the setup mode to the High Limit setup
if the pressure module is installed. With no pressure module, it will step to
Cycle Delay Setup.
2.4 • High Limit [Only available when DCP connected]
The High Limit Setup, available only with a pressure module installed,
sets the pressure at which the cleaning cycle will begin. This value may
be between zero and the pressure module full scale pressure. Normally,
the High Limit should be above the Low Limit. If, however, the High Limit
pressure is set below the Low Limit, the cleaning cycle will begin when the
High Limit is exceeded and stop when the pressure falls below the High
Limit. The Low Limit in this case will have no effect. Pressing “SELECT”
will change the system to the Low Limit Setup mode.
HIGH
LIMIT COM
LOW
LIMIT
TB3
COM
ALARM
MODE
MAN
OVR
DT
CLN
ALARM
RESET COM
TB2
L1
+
L2
-
SOL
COM
1
2
3
4
5
6
7
8
9
10
(INTERNALLY CONNECTED)
TB1
(10 CHANNEL SHOWN)
DCT1000DC
MASTER CONTROLLER
DAISY
CHAIN
OUT
DAISY
CHAIN
IN
MODE SELECTION SWITCH
REAR
SECTION
FRONT
SECTION
CONTINUOUS
OFF
ON DEMAND
OUTPUTS (3A MAX)
L1 L2
LINE INPUT
4-20 MA
OUTPUT
TB4
4-20 MA
SOURCE
EXTERNAL
INTERNAL ALARM
CONT
ACTS
TB5
Figure 4
Three Position Selection Switch Wiring
(+) (-)
E-97DC:e-97DC 10/5/10 8:27 AM Page 6
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