Serial Communication Bus Connection - Trane TR200 Operating Instructions Manual

3. Control terminals
4. Grounded restraining clips

Serial Communication Bus Connection

The ECB reports serial communication data to host systems through the drive. Connection to the serial com-
munication network is made either through the EIA-485 terminals on the drive (see figure above) or, for other
protocols, terminals located on the communication option card. For option card connection, see the option card
instructions provided with the unit.
• For ECB serial communication protocols using the EIA-485 terminals, make connections in the following
manner.
IT IS RECOMMENDED TO USE BRAIDED-SHIELDED, TWISTED-PAIR CABLES TO REDUCE NOISE BETWEEN
CONDUCTORS.
1. Connect signal wires to terminal (+) 68 and terminal (-) 69 on control terminals of drive. (See the drive
support materials for wire size and tightening torque.)
2. Terminate shield to grounded restraining clip provided by stripping wire insulation at point of contact.
3. If shielded cabling is used, do not connect end of shield to terminal 61.
Programming
Serial communication point maps, parameter settings, and other details for bypass option functionality are
included in the serial communication materials supplied with the unit.
TR200 Option Panel Operating Instructions
Installation
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