HC900 Hybrid Controller Installation and User Guide

Communications Installation - RS-485 Link to Operator Interface
100 HC900 Hybrid Controller Installation and User Guide Revision 5
9/03
RS-485 Link to Operator Interface
The RS-485 port is located below the hinged plastic cover on the top part of the Controller Module.
Typically, the cable that interconnects this port to the Operator Interface must be fabricated during
installation, because it will probably be necessary to run the cable through conduit.
Table 18 - Parts needed for RS-485 Cabling
Part # Quantity Description
Belden #9271 (or equivalent),
with 120 ohm resistors (2,000
feet Maximum)
Or
Belden #9182 (or equivalent),
with 150 ohm resistors (4, 000
feet maximum)
Variable
Commercially available communication
cable
1
10-terminal connector (Supplied with the
operator interface)
Phoenix #1840379 (or
equivalent)
1
connector (3-pin) (Supplied with the
controller CPU module)
047260 1
Ferrite cable clamps (Supplied with the
operator interface)
089037 2 Nylon cable ties