Verifying Load Cell Output And Input Sensitivity - A&D SW-D Setup Instructions

4. Solder the wires to the pin contacts of the connector.
A 5 m or less load cell cable is recommended as the SW-D uses a 4 wire
system (no remote sensing).
Load cell
5. Tighten the cable clamp locking nut to secure the load cell cable.
6. Close the load cell panel by securing the four screws and cover the screws using
the screw protection caps.

5-3. Verifying Load Cell Output and Input Sensitivity

The input sensitivity is 0.2 µV/division or more. When designing a weighing scale, the
following calculation formula should be satisfied.
The input sensitivity requires a change in output voltage, from the weighing device,
to change the display value as a one digit step. In order to achieve a scale with
stable performance, select the input sensitivity as large as possible.
Calculating formula:
0.2
SHIELD
(EXC-) Negative Excitation
(SIG-) Negative Signal In
(SIG+) Positive Signal In
(EXC+) Positive Excitation
× ×
E B d
≤
×
A n
Load cell cable
A : Rated capacity of load cell
B : Rated output (mV/V)
d : Minimum division
E : Excitation voltage (mV) = 5000 mV for SW-D
n : Number of load cells
6
5 SHIELD
4 EXC-
3 SIG-
2 SIG+
1 EXC+
Pin contacts