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1640-N4X
1640-N4X Instruction Manual
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Figure 7 Alarm Relay Connections ...................................................................................................................... 8
Figure 8 Typical Input Power connections........................................................................................................... 8
Figure 9 Front Panel ............................................................................................................................................. 9
Figure 10 RS-485 Bus with 4 transceiver chips ................................................................................................. 20
Figure 11 Correct and incorrect wiring schemes................................................................................................ 21
Figure 12 Recommended RS-485 communications set-up ................................................................................ 22
Figure 13 Unbalanced Data Bus......................................................................................................................... 23
Figure 14 Data Bus using two repeaters............................................................................................................. 23
Figure 15 Repeater wiring diagram.................................................................................................................... 23
Figure 16 Daisy Chain wiring diagram .............................................................................................................. 24
Figure 17 Unbalanced Data Bus......................................................................................................................... 24
Figure 18 Four repeater Data Bus ...................................................................................................................... 25
Figure 19 wire length vs. data speed .................................................................................................................. 25
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