Emerson Site Supervisor, User Manual

Page: 26 / 141

2-8
• Site Supervisor Controller User Guide
2.0
026-1800 Rev 3 02-AUG-2016
Supervisor and component operation. Information
gathered by the controller from the input boards is checked
against current stored setpoints. If differences in the
received input data and the setpoint information are
detected, a signal is either sent to the proper 8RO relay, or
an existing signal is discontinued. Through the use of this
relay signal, control functions that can be properly
maintained by a simple contact closure sequence are
effectively operated by the Site Supervisor.
The 8RO board is easily installed and operated within
the Retail Solutions Network environment because of its
straightforward design. Several of these features are
shown in
Figure 2-9
.
2.2.9 4AO Analog Output Board
The 4AO Analog Output Board
(P/N 815-3030)
(Figure 2-11
) is configured with four analog output
connections that provide a variable voltage signal to any of
four analog devices that may be controlled by a single Site
Supervisor. Two 4-20mA outputs are provided for
channels 1 and 2. The 4-20mA outputs provide a variable
current for applications that are either externally powered
or that require power from the 4AO board.
2.2.10 8DO Digital Output Board
For control of anti-sweat heaters, Retail Solutions
supplies the 8DO Digital Output board (
P/N 810-3050
).
The 8DO has eight outputs which may pulse up to 150mA
at 12VDC.
The 8DO is primarily designed to control anti-sweat
heaters. The 8DO is shown in
Figure 2-12
.
Figure 2-9
- 8RO Relay Output Board
Figure 2-10
- 8ROSMT Relay Output Board
Figure 2-11 - 4AO Analog Output Board (P/N 815-3030)
Figure 2-12
- 8DO Digital Output Board
4
5
7
8
9
Transmitting (TX ) and Receiving (RX) LEDs
Hand-held Terminal (HHT) Jack
8
9
Alarm and Status Indicator LEDs
4-20mA Channels (2)
Analog Outputs (4)