Corner Load Balancing - HBM VKK1R-4 Montageanleitung

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Corner load balancing

With weighing machines, mechanical imbalance may lead to corner load
errors. According to the EN 45501 3.6.2 standard for non-automatic weighing
machines, specific values are to be maintained for eccentric loading. The
terminal boxes provide an easy way to compensate for these errors
electrically. A binary-stepped network of 4 resistors is available for each load
cell, that is shorted at the factory via 0 Ω resistors (see Fig. 5.1). Opening the
vertical 0 Ω resistors activates the relevant resistances and thus reduces the
load cell signal.
Input: Load cells 1 ... 4
0.39 Ω
0.82 Ω
1.50 Ω
3.00 Ω
Fig. 5.1: Resistor network for corner load balancing of 4 load cells
HBM
4 3
0.39 Ω
0.82 Ω
1.50 Ω
3.00 Ω
2 1
0.39 Ω 0.39 Ω
0.82 Ω 0.82 Ω
1.50 Ω 1.50 Ω
3.00 Ω 3.00 Ω
VKK1-4 / VKK1R-4
Output: Amplifier
Sense (+)
Excitation (+)
Excitation (−)
Sense (−)
Signal (−)
Signal (+)
A2326-1.1 en/de/fr