Confirming The Load Cell Connection With A Digital Multi Meter - A&D AD-4410 Instruction Manual

10.4. Confirming the load cell connection with a digital multi meter

The load cell connection can be checked easily using a digital multimeter.
Figure 14 shows points to confirm the load cell connection.
When a summing box is used, the same measurement must be performed, even internally.
Items to be measured during confirmation of the load cell connection
Measurement
point
EXC+ SEN+
① ②
EXC+ EXC-
① ④
SEN- EXC-
③ ④
SIG- EXC-
⑥ ④
SIG+ SIG-
⑤ ⑥
Fig.14 Method to confirm the load cell connection
Item to be measured
Decrease in voltage on
the EXC+ side of the
load cell cable
Load cell excitation
voltage
Decrease in voltage on
the EXC- side of the
load cell cable
Center point voltage of
the load cell
Output voltage of the
load cell
Judging the voltage
Normally 100mV or less. However, it may
exceed 1V when an extremely long load
cell cable
configuration, it must be 0V.
If it is between 4.75 to 5.25V, it is normal.
Normally 100mV or less. However, it may
exceed 1V when an extremely long load
cell cable
configuration, it must be 0V.
Should be about 2.5 V, approximately half
of excitation voltage.
Compare with theoretical values obtained
from the load cell rated capacit, actural load
and excitation voltage.
Generally within 0 to 15mV.
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mV
is used. For the
is used. For the
4-wire
4-wire
AD-4410