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2.3.2
Load Cells
The load cell cable is connected to the socketed DB-9 marked load cell. This DB-9 is connected to the CPU
board on J1; see the table below for the pin assignments. The DB-9 is for four-wire installations, so leave sense
jumper JP1 and JP2 on.
NOTE: The DB-9 is factory pinned for four-wire connections. Leave sense jumpers JP1 and JP2 on.
2.3.3
Serial Communications
The pinned DB-9 connector marked as COMM is connected to EDP port J3. It is bi-directional communication
to be used for a PC connection. Configuration using Revolution® software can be loaded through this connector.
Figure 2-8. Switch Panel Cutout
Figure 2-9. Switch Panel Drawing
DB-9
J1 Pins
Pin 3
2
Pin 4
5
Pin 5
Pin 6
6
Pin 7
1
Table 2-1. J1 Load Cell
Function
Pad Number
-Sig
P 13
+Exc
P 12
Shield
-Exc
P 11
+Sig
P 14
Tracer AV Installation Manual - Installation
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