Chapter 5 Maintenance
58
SM 180-600 KMFX User Manual
Fig.5-3 Configuration through monitoring software
5.4.1 Setting of Battery Type
The battery type can be only set through the monitoring software. The system at present
supports lead acid battery and Lithium iron phosphate battery (LFPB).
5.4.2 Setting of Battery Number
1) Setting battery number for Lead- Acid battery
The nominal voltage of one block battery is 12V and for each block of battery, it consists of 6
cells (each cell of 2V).For the setting, as is shown in Fig.5-2, if the battery is 40, it means that
there are 40 blocks of batteries and both the positive and negative are 20 blocks of batteries.
In the case of cell battery of 2V (usually with large capacity) is used, battery number should be
the same as the block battery. The cell battery actually in use should be 240 cells (6*40), with
both and positive and negative of 120 cells.
The battery number setting range is 36-44
2) Setting battery number for LFPB
For the cell of each LFPB, the cell voltage is 3.2V; each battery block consists of 1 cell. In total,
if 40 blocks of Lead- Acid battery are used, for the LFPB, the number will be 150. Both the
positive and negative are 75 cells.
The battery number setting range is 140-180.The lowest EOD voltage for the LFPB will be
360V and highest voltage can be 620V.
5.4.3 Battery Capacity Setting
Battery Capacity Setting sets the capacity value of the battery block .For example, if the
system uses 40 blocks of 12V/100AH batteries, the Battery Capacity Setting should set to 100
Ah. If 240 cells of 2V/1000AH are used, the Battery Capacity Setting should be set to 1000 Ah.
In case of there are more than one strings of battery in parallel, the battery capacity setting
value will be the times of the single string. For instance, if the configuration is two strings of 40
blocks of 12V/100AH batteries, the battery capacity setting should be set to 200AH.
The system sets current limits according to the battery capacity set. For the Lead-Acid battery,
the current limit is 0.2C, and for the LIPB, the current is 0.3C. For instance, the 20-slot UPS is
configured to 40 blocks of 12V/500AH batteries, which can provides total max charging current
of 192A.Due to the current limits(0.2C) , the max charging current will be 100A(0.2*500A).
5.4.4 Float and Boost Charge Setting
In boos charging, the system charges the batteries with constant current. After the period, the
system will enter the float charging.
For the Lead-Acid battery ,the default float charge voltage per cell is 2.25V, boost charge
voltage is 2.35V
；
For the LFPB, the default float and boost charge voltage per cell is 3.45V
Summary of Contents for SM180KMFX
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