Kikusui PFX2500 Series, Operation Manual

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PFX2512
Explanation of Functions
Unbalance detection function (only when an OP02-PFX / OP03-
PFX is installed)
This function measures the voltages of all the cells in the object under measurement, and detects
the maximum and minimum cell voltages. When the unbalanced voltage (the difference between
the maximum and minimum cell voltages) exceeds the set value, an alarm occurs and the output is
turned off. If you have set this as a cutoff condition, the charge/discharge operations stop (they are
cut off ).
The unbalanced voltage detection response time is approximately 1 second after the cell voltage
measurement begins.
You can connect up to 72 (when two OP02-PFX units and eight OP03-PFX units are installed)
objects under measurement.
Test Condition Editor
To set the unbalanced voltage function, use the BPChecker3000 application software.
If the internal resistance of the DUT (battery) is high and the voltage fluctuates greatly during
charge/discharge, this function may not operate correctly. Turn this function off during these
situations.
Be sure to connect a sensing cable to each cell.
If you connect to the cells in one of the following ways, the unbalance detection function will not
work properly. Doing so may lead to the abrupt interruption of tests or the generation of alarms.
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Help
Unbalanced voltage
Cell voltage
Charge time
Maximum cell voltage
Minimum cell voltage
Example of the voltage measurement of six cells
Connecting to different voltages
(Example of a prohibited connection)
Not connecting sensing cables to both ends of
the cells (example of a prohibited connection)
The unbalance detection function only works
on cells of the same type and same voltage. The function is affected by the resistance
between the cells and the protection switch
resistance, and it cannot measure the correct
cell voltages.
3.7 V
3.7 V
3.7 V
7.4 V
7.4 V
Protective switch