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INTERFACING MULTIPLE
APPLIANCES
PARALLEL CONNECTION
FIG. 59 E-Bus Connection to Controls
Connection between multiple
22AWG (0.034 mm2) plenum or
star, loop and/or bus wiring. The maximum number of nodes per segment is 60. The maximum number of nodes in a
FTT networks are flexible and convenient to install and maintain. However, it is imperative to plan the network layout and to create and maintain accurate documentation. Careful planning and up to date documentation facilitates compliance verification and future FTT network expansion. It also minimizes unknown or inaccurate wire run lengths, node to node (device to device) distances, node counts, total wire length, inaccurate repeater locations, and misplaced or missing terminations.
Wire to the terminal blocks as follows:
NOTE:
When attaching two or more wires to the same terminal, twist wires together (see Fig. 60). Deviation from this rule can result in improper electrical contact.
TABLE - W
| Maximum FTT network Bus length | Maximum | |
Wire/Cable Type | for segment(s) in feet (meters) | for segment(s) in feet (meters) | |
__________________________________ | _________________________________ | ___________________________________ | |
| _ |
| |
Level IV 22 AWG unshielded, twisted |
| 3773 (1150) | |
pair, stranded communications wire (use | 4593 (1400) | ||
| |||
plenum rated wire where required) |
|
| |
|
|
|
TABLE - X
Singly Terminated FTT Network Bus Topology Specifications
|
| Maximum FTT network Bus length | Maximum |
Wire/Cable Type |
| for segment(s) in feet (meters) | for segment(s) in feet (meters) |
__________________________________ |
| _________________________________ | ___________________________________ |
|
| _ |
|
Level IV 22 AWG unshielded, twisted |
|
| 1312 (400) |
pair, stranded communications wire (use |
| 1640 (500) | |
|
| ||
plenum rated wire where required) |
|
|
|
|
|
|
|
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