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I/O Network Boards and Peripherals Hardware Overview • 2-9
2.2.6 4AO Analog Output Board
The 4AO Analog Output Board (P/N 815-3030) (Fig-
ure 2-15) is configured with four analog output connec-
tions that provide a variable voltage signal to any of four
analog devices
that may be controlled by a single E2. Two
4-20mA outputs are provided for channels 1 and 2. The
4-20mA outputs provide a variable current for applications
that are either extern
ally powered or that require power
from the 4AO board.
Figure 2-15
- 4AO Analog Output Board (P/N 815-3030)
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)
2.2.7 8DO Digital Output Board
and PMAC II Anti-Sweat Controller
For control of anti-sweat heaters, Emerson Retail Solu-
tions supplies the 8DO Digital Output board (P/N 81
0-
3050). The 8DO has eight outputs which may pulse up to
150mA at 12VDC.
Since the 8DO is primarily designed to control anti-
sweat heaters, the 8DO
is the heart of Emerson Retail
Solutions’ Pulse Modulated Anti-Sweat Control (PMAC
II) panel. The PMAC II (P/N 851-1000) provides 16 chan-
nels of anti-sweat control circuitry. The PMAC II panel
combines
the 8DO with high-capacity relays in a single
enclosure, providing 256 total amps of anti-sweat heater
operation.
The 8DO is shown in Figure 2-16. The PMAC II is
shown in Figure 2-17.
Figure 2-16 - 8 DO Digital Output Board
Figure 2-17 - PMAC II Anti-Sweat Control Panel