Load Cell Wiring
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Rice Lake Weighing Systems
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3
2.0
Load Cell Wiring
The following section provides information for the proper wiring of load cells.
1. Route the load cell cables so they will not be damaged or cut.
Failure to heed could result in product damage.
* Cable should not be routed near heat sources greater than 150°F.
* Do not shorten load cell cable. Cutting the cable affects temperature compensation.
* Coil and protect excess cable to avoid damaged or sitting in water.
2. Provide a drip loop in all cables so that water or other liquids will not run directly
down the cables onto either the load cells or the junction box. Attach load cell cable
to the dead structure.
Figure 2-1. Drip Loop
3. If conduit protection is needed against mechanical or rodent damage to the load cell
cables, use flexible conduit and conduit adapters (20K - 450K only) at the load cells.
4. Connect cables for load cells to the summing board in the junction box according to
the guide shown below and the labels on the terminal strips of the junction box. To
verify the wiring scheme, see the certification shipped with each load cell.
2.1 Junction Box Connections, Adjustments and
Calibration
• Refer to junction box manual for trimming details.
• Refer to indicator manual for system calibration details.
Load Cell Wire Colors (RL9000TWM Only)
Wire Color
Function Positive Reading
Green
+EXC
Black
- EXC
Red
- SIG
White
+ SIG
Gray or Bare
Shield
Table 2-1. Wire Function
IMPORTANT
Drip Loop
