
I/O bus wiring
BAS-APG001-EN
91
I/O bus wiring
The EX2 communicates with the Tracer MP581 and up to three other
EX2 modules on an IEEE-485 link. This link must be a daisy chain. Typi-
cally, the Tracer MP581 is at one end of the daisy chain, but any device
can be at the ends of the link (Figure 48 and Figure 49 on page 92).
Wiring for the I/O bus must meet the following requirements:
•
All wiring must be in accordance with the National Electrical Code
and local codes.
•
Recommended wire is low-capacitance, 22-gauge, Level 4, unshielded,
twisted-pair. Existing sites that have already been wired with low-
capacitance, 18-gauge, shielded, twisted pair with stranded, tinned-
copper conductors (Trane-approved, purple-jacketed wire) don't have
to be rewired. This shielded wire will work if properly terminated.
•
Total I/O wiring length cannot exceed 1000 ft (300 m).
•
At the first three modules, splice the shield with the shield from the
next section of communication-link wiring, and tape the shield to pre-
vent any connection to ground. At the final module on the end of the
daisy chain, terminate the shield as shown in Figure 48. Note that
you can use one, two, three, or four EX2 modules with each
Tracer MP581.
Figure 48. I/O bus wiring example 1
Tracer MP581
EX2
EX2
EX2
EX2
Up to 1000 ft (300 m)
Содержание Engineered Smoke Control System
Страница 1: ...BAS APG001 EN Applications Guide Engineered Smoke Control System for TRACER SUMMIT ...
Страница 2: ......
Страница 3: ...BAS APG001 EN September 2006 Applications Guide Engineered Smoke Control System for TRACER SUMMIT ...
Страница 6: ......
Страница 12: ...Contents vi BAS APG001 EN ...
Страница 30: ...Chapter 1 Smoke control overview 18 BAS APG001 EN ...
Страница 48: ...Chapter 3 Installation diagrams 36 BAS APG001 EN Figure 14 Tracer MP581 to FSCS wiring ...
Страница 50: ...Chapter 3 Installation diagrams 38 BAS APG001 EN Figure 15 Tracer MP581 to FACP wiring ...
Страница 57: ...Wiring high voltage ac power BAS APG001 EN 45 Figure 19 AC wiring ...
Страница 59: ...EMI RFI considerations BAS APG001 EN 47 Figure 20 Checking the earth ground ...
Страница 75: ...EMI RFI considerations BAS APG001 EN 63 Figure 31 Checking the earth ground ...
Страница 96: ...Chapter 5 Installing the Tracer MP581 programmable controller 84 BAS APG001 EN ...
Страница 104: ...Chapter 6 Installing the EX2 expansion module 92 BAS APG001 EN Figure 49 I O bus wiring example 2 ...
Страница 110: ...Chapter 6 Installing the EX2 expansion module 98 BAS APG001 EN ...
Страница 123: ...End process verification BAS APG001 EN 111 Figure 61 ast actuator fail checkb 3 13 06 ...
Страница 132: ...Chapter 7 Programming 120 BAS APG001 EN ...
Страница 151: ...Understanding bindings BAS APG001 EN 139 Figure 79 Mixed subnet node and group bindings ...
Страница 152: ...Chapter 8 Network variable bindings 140 BAS APG001 EN ...
Страница 154: ...Appendix A References 142 BAS APG001 EN ...
Страница 155: ......