Trane Vertical Bypass/Non Bypass Panel 3.4.10Serial Communication Bus Connection, Installation

Installation

1 130BX224.10

2

3

4

Figure 3.19 Control Terminals Location

1.EIA-485 terminal

2.Jumper wire

3.Control terminals

4.Grounded restraining clips

3.4.10Serial Communication Bus Connection

The ECB reports serial communication data to host systems through the drive. Connection to the serial communication 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.

NOTE!

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 the end of the 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.

BAS-SVX49A-EN 3-27