Mettler Toledo IND231 Manual De Instalación página 31

NOTES
1. USE SIX-CONDUCTOR SHIELDED WIRE FOR HOME RUN CABLE
2. SINGLE 4-WIRE CELLS: JUMPER +EXC TO +SEN AND JUMPER -EXC
TO -SEN AT IND231/IND236 TERMINALS
3. MULTIPLE 4-WIRE LOAD CELLS: JUMPER +EXC TO +SEN AND
JUMPER -EXC TO -SEN AT JUNCTION BOX INPUT TERMINALS
4. WIRE SIZE: 18 AWG (0.823 mm2) MAX., 24 AWG (0.205 mm2)
MIN.
2.4.5.1. Analog Load Cell Shield and Ferrite Installation
There are two methods for terminating the Analog Load Cell cable shield – to chassis ground, or to
the ground pin of the connector. The two methods are illustrated below.
In either method, to meet certain electrical noise emission limits and to protect the IND231/IND236
from external influences, a ferrite core must be installed on the load cell cable connected to the
terminal. The ferrite core is included with the basic terminal.
30094803 | 00 | 08/2013
4-Wire Cells
Figure 2-19: Load Cell Termination, Chassis Ground (top) and Pin Ground (bottom)
When using the standard four-wire cable, if an increase in load results in a decrease in weight
display, reverse the signal wires (+SIG and −SIG).
NOTES
1. USE SIX-CONDUCTOR SHIELDED WIRE FOR HOME RUN CABLE
2. WIRE SIZE: 18 AWG (0.823 mm2) MAX., 4 AWG (0.205 mm2) MIN.
METTLER TOLEDO IND231/IND236 Installation Manual
6-Wire Cells
2-11