FT-111(D) Panel Weighing Indicator, Technical Manual, Rev.1.0.0, May 2019
Page
21
of
146
Digital Load Cell Connection (Only FT-111 D)
The digital load cell wiring should be made carefully before energizing to avoid FT-111 D and load cells from
damages. The instrument cable between the instrument and junction box must be shielded and convenient for
high speed RS485 interfacing. The wire diameter of the instrument cable should be selected for maximum 0.5
volt drop between the instrument and junction box.
Pin number
Definition
Description
1
A
+ RS485 for DLC interfacing
2
B
- RS485 for DLC interfacing
3
- V
Ground
4
NC
Not connected
5
NC
Not connected
6
+V
LC
Power output for DLCs
7
-
Not used
Shield
Protective Earth
Table 4-2
– Pin configuration of the digital load cell terminal of FT-111 D.
Figure 4.4
– The FT-111 D connection with junction box
Figure 4.5
– Installation with junction box
Figure 4.6
– Daisy-chain installation
1
7
DLC #1
DLC #2
DLC #n
to power supply
PE
FT-111D
Cabinet
Platform
DLC #1
DLC #2
DLC #n
to power supply
PE
Instrument
Cable
FT-111D
Cabinet