Download E2 User Manual.book - Emerson Climate Technologies

• CCB and CC-100 case controllers
The HHT does not require a separate power source.
The unit is powered from the RJ-11 connector on the
peripheral equipment. The HHT includes a standard male
RJ-11 to male RJ-11 cable.
NOTE: The 9V battery and 9-12V DC adapter
connection are not used on this HHT model
(P/N 814-3110).
1
with any refrigeration system or environmental control
component.
The 8RO board is the direct link between the E2 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 E2.
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 2-11.
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1 The power switch determines if the HHT is
LEGEND
8 Scrolls list selections and scrolls through
ASCII characters if in a text field
in self-powered mode (BATT), ext power (EXT),
or if powered from a target device (HOST)
2 External Power Connector (9-12 VDC)
3 F2- Main Menu
9 RS-485 Connector
10 Cancel - clears/erases text in editable field;
4 Up Arrow - moves to previous screen,
editable field, or top of screen
5 Right Arrow - selects last editable field
starting from bottom of screen; selects
last editable field from bottom to top
6 Enter - save into memory
7 Numeric keypad
11 Down Arrow - moves to next screen,
editable field, end of screen, or advances
12 Left Arrow - selects first editable field from
top of screen, and next editable field from
top to bottom
13 F1 - Home Screen
Figure 2-11 - 8RO Relay Output Board
cancels overrides
14 LCD - four lines of 16 characters
Figure 2-10 - Hand-held Terminal (814-3110)
2.2.5
The 8RO and 8ROSMT Relay
Boards
The 8RO (P/N 810-3005) board is a general-purpose
board used to connect an E2 to any of eight standard control relay outputs, but is now obsolete and has been
replaced by the 8ROSMT (P/N 810-3006) board.
Figure 2-12 - 8ROSMT Relay Output Board
To function, the 8RO board must be connected through
either the Echelon Network or the RS485 I/O Network to
the E2. When properly installed, the 8RO receives an electrical impulse from the E2, which either opens or closes
any of eight contact relays. Output definitions within the
E2 allow the user to configure the 8RO board to interact
I/O Network Boards and Peripherals
Hardware Overview • 2-9