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23
AW16000 - Instruction Manual
Dimensional Specifications
1.1 Power Requirements
The controller has a “universal” power supply that will allow operation on 120 VaC to 240 VaC power lines. The
input voltage must be between 85 VaC and 270VaC either 50 or 60 Hz. No circuit changes are required when
switching between these voltages. The solenoid loads, however, must be sized to accommodate the line voltage
selected.
1.2 DCT1000 Terminal Connections
The line and solenoid connections are located at the lower edge of the board below the plastic guard. The
terminal block is a “Euro” style connector system that clamps the wire within the connector body. The connector
will accept wire sizes from 14 to 22 aWG.
The wire should be stripped to no more than 0.25 inches to avoid shorts or expose line voltages creating a
potential safety hazard. To assist you in determining the proper wire gauge required, a strip gauge is provided
at the lower right corner of the board.
The connector system used on the DCT1000 is specified for single connection but you can piggyback to a single
lug provided that local codes allow for this and good workmanship practices are followed.
To power up the master controller and the channel expander, connect line power to l1 and l2 (see Dimensional
Specifications, Figure 1). Connect the solenoids between the selected output and the solenoid common.
Solenoid common and l2 are internally connected.
Switches connected to the control inputs at the top of the board must be isolated contacts connected only to
the relevant terminal and to the common terminals. The following subparagraphs describe the external switch.
1.2.1 External Pressure Connection
The controller may be used with an external pressure limit switch or sensor to provide demand-cleaning
operation. The high limit and low limit inputs may be used for this purpose.
a simple on-off system can be established with a single pressure switch connected to the high limit input. better
control can be achieved with a high and low limit switch/gage such as the Dwyer Photohelic®.
In this on demand mode, time on, time off, and cycle delay may be programmed to define the cleaning cycle. a
three pin terminal block (Tb3) provides connection for external high and low limit switches (see Figure 2 on the
next page). These switches must be isolated contacts. The common line must not be connected to equipment
ground or protective ground, since these may introduce electrical noise and cause improper operation or
possible damage to the control board. The operation of these inputs are summarized as follows (see next page):
Note: If a DCP100a or DCP200a pressure module is installed in the master controller, the switching
functions are ignored.
Current
operation
Low limit
switch
High limit
switch
Next
operation
Hold
Open
Open
Hold
Hold or Run
x
Closed
Run
Hold
Ø
Ouvert
Hold
Hold
Closed
Ø
Run
Run
Closed
ß
Run
Hold
Closed
Ø
Run
Run
ß
Open
Hold
Legend
x
Either open or closed
Ø
Transition from open to closed
ß
Transition closed to open
1.0 — InSTALLInG THE DCT1000 (COnT’D)
