©2025 Copeland LP.
026-1803 R13 Supervisor I&O User Guide 7 - 8
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.
7.2.9 The 8RO and 8ROSMT Relay
Boards
The 8RO (P/N 810-3005) board is a general-purpose board
used to connect a Supervisory Controller to any of eight
standard control relay outputs, but is now obsolete and has
been replaced by the 8ROSMT (P/N 810-3006) board.
To function, the 8RO board must be connected through
either the Echelon Network or the RS485 I/O Network to the
Supervisory Controller. When properly installed, the 8RO
receives an electrical impulse from the Supervisory
Controller, which either opens or closes any of eight contact
relays. Output definitions within the Supervisory Controller
allow the user to configure the 8RO board to interact with any
refrigeration system or environmental control component.
The 8RO board is the direct link between the supervisory
controller 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
Supervisory Controller.
The 8RO board is easily installed and operated within the
Copeland Network environment because of its
straightforward design. Several of these features are shown in
Figure 7-9.
NOTE
NOTE: The 9V battery and 9-12V DC
adapter connection are not used on
this HHT model (P/N 814-3110).
Figure 7-8 - Hand-held Terminal (814-3110)
Figure 7-9 - 8RO Relay Output Board
Figure 7-10 - 8ROSMT Relay Output Board
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