All the lights of STOP, RUN and SF are red. The three lights are on at the same time. The cut is red. At this time, it should be in an abnormal state. At least "STOP" and "RUN" should not be brighter. Big. If the SF/DIAG is red, it indicates that there is a fatal error. If it is a yellow light, it may be a programming definition\ is in a mandatory state or other reasons. The CPU has a fatal error, and the switch is hit to STOP. The plc information can be viewed through communication to know the cause of the specific fatal error. After correcting the program, re-downloading the running fault light will turn off. The other is that the hardware has a fault, and only the PLC can be replaced to eliminate the fault.
The lithium Battery Protection Board is the charge and discharge protection for the series-connected lithium battery pack; when fully charged, it can ensure that the voltage difference between the individual cells is less than the set value (generally ±20mV), so as to realize the equal charge of each single cell of the battery pack. , effectively improving the charging effect in the series charging mode; at the same time, it detects the overvoltage, undervoltage, overcurrent, short circuit, and overtemperature status of each single cell in the battery pack to protect and prolong the battery life; undervoltage protection makes each A single-cell battery is used to avoid damage to the battery due to overdischarge.
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