Solar MD SS4143-11, Installation Manual

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Switching the Battery ON
Step 1. Make sure all DC cables are tightened according to specifications.
Step 2. If the battery operates in parallel with other energy sources, make sure that the
difference between battery voltage and DC bus is not more than 2.5V. If greater than 2.5V
please charge or discharge the other source accordingly until the voltage difference is in a
safe range under 2.5V.
Caution!
A hot connection with difference in voltage can cause very high
equalization current which can burn the fuses of the battery!
Caution!
Measure the voltage of the battery before connecting the DC
cables.
Step 3. Turn the BMS board ON/OFF switch to the ON position (figure 4).
Step 4. Connect Multipurpose button if not connected to the BMS board connector (figure 4
).
Step 5. Hold the multi purpose button until the light comes on.
Warning!
If the battery does not switch the main protection contactor ON in
7 sec, please check the BMS board indication LED for faults. See section BMS
Error and Warnings.
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