FT-111(D) Panel Weighing Indicator, Technical Manual, Rev.1.0.0, May 2019
Page
20
of
146
4.6 Electrical Connections
Analogue Load Cell Connection (Only FT-111)
To avoid damages, the load cell wiring should be made carefully before energizing the instrument. Load cell
connection schematics are in
Figure
The same polarity sense and excitation pins of the load cell connector
should be short circuited
for 4-wire
installation. If you have junction box in your system, use 6 wire cable between indicator and the junction box,
and short circuit these pins in junction box for better performance as shown below
.
Pin number Definition
Description
1
+Exc
+ Excitation
2
+Sen
+ Sense
3
+Sig
+ Signal
4
Shield
Protective Earth
5
-Sig
- Signal
6
-Sen
- Sense
7
-Exc
- Excitation
Shield
Protective Earth
Table 4-1
– Pin configuration of the analogue load cell terminal.
Protective ground connection of cable shields is done by;
Figure 4.3
– The analogue load cell and junction box connection.
4 wire load cell connection
6 wire load cell connection
Junction box connection.
Wiring between instrument and
junction box will be 6 wire.
1
7
