Relay Outputs
The digital relay output terminals are located on the far right side of the terminal
strip under the label “Relay Outputs.” Terminals 21–26 (A–F) are the actual
output connections. Use Figure 2 and Table 1 to determine the correct connections.
Digital relay output D (Terminal 24) is not active because of the analog damper
connection.
The digital relay outputs tie in directly to the six relay output status LEDs located
on the case of the HPC or HPC Plus. The relay output status LEDs match the
status of the relay:
§
If the contact is closed, the relay is energized and the LED is on.
§
If the contact is open, the relay is de-energized and the LED is off.
Terminal 20 is for one side of a 24 source to be regulated (switched) through
Terminals 21–26 (A–F). The relay outputs are isolated from the other
connections to permit the additional power source. The transformer powering the
module can be used if it has enough capacity.
Network
Communications
Use a suitable shielded cable (Novar Controls WIR-1010, Belden 8761, or
equivalent) to make the communication connections between the HPC or HPC
Plus and the module communications terminals of the executive module.
On the HPC or HPC Plus, the connections are Terminals 17, 18, and 19, located
under the label “Module Network 5V Max.” Make certain that the plus (+) and
minus (–) connections are made correctly.
CAUTION!
The Shield connection is not a ground like the other
common grounds on the terminal strip. It is dedicated
for communications
only
. Do not connect any other
grounds to the Shield connection (Terminal 18).
DOC. #569062000
2/20/01
7
HPC/HPC Plus Installation Instructions
