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Manning AirAlert-96d Gas Monitor 19073 AIRALERT96D 05/2006 Prelim REVC Copyright © 2006 Honeywell Analytics. All Rights Reserved. 6
3 Wiring continued
Example of system wiring with network devices:
Figure 4. Sample Network Wiring
EC EC EC EC EC EC
IRIM IMPower
Supply
Relay
Module
AirAlert 96d
A1B1 SHLD
A2
B2
V+V-
V+
V-
SHLD A3 B4
B3
A4
VL
VL
Power cable (V+)
Power cable (V-)
Channel 1 (A1 and B1 twisted pair)
EC EC EC ECEC EC EC EC EC EC
Power
Supply
RS-485 comm cable; Twisted pair, 24 AWG, shielded (Belden 9841)
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, non-shielded