3 Wiring continued
Example of system wiring with network devices:
Figure 4. Sample Network Wiring
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Power | AirAlert 96d | IM | IR | IM |
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Supply |
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V+ V- V+ V- | A1 B1 A2 B2 SHLDSHLD A3 | B3 A4 B4 |
| EC | EC | EC | EC | EC | EC | Relay |
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| Module | ||||||
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| VL |
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Power cable (V+)
Power cable
Channel 1 (A1 and B1 twisted pair)
Power
Supply
EC | EC | EC | EC | EC | EC | EC | EC | EC | EC |
Power cable; Two conductor, 14 AWG (Belden 5100UE)
4/20 mA comm cable; Three conductor, 18 AWG, shielded, stranded (Belden 8770) VL sensor cable; Four conductor, 16 AWG,
Manning | 6 |