IC754VSF12CTD Redundant Design Transformer

IC754VSF12CTD in the process of automatic water supply, PLC real-time detection of pool water level, if the water level is lower than the set alarm level, the buzzer sends out a water shortage alarm signal; if the water level is lower than the set shutdown level, stop all the pumps to prevent the pumps from dry pumping, and sends out a shutdown alarm signal; if the pool water level is higher than the set upper limit of the pool level, the automatic shutdown of the pool feed pipe Electric valve.

IC754VSF12CTD power supply will be suddenly cut off, if no one is on duty, after the recovery of power supply if the system can not start will result in water cut off, for this reason, the system is set up after the power supply automatic frequency conversion start mode. After the power supply is restored, PLC will issue a command and the buzzer will issue a warning, and then the 1# pump will be started by frequency conversion according to the automatic operation mode until it runs steadily at the given water pressure value.

IC754VSF12CTD inverter failure From the consideration of redundancy design principle, it is necessary to supply water without interruption even when the inverter fails. When the frequency converter suddenly fails, the buzzer alarm, PLC sends a command to make all the pumps shut down, and then 1 # pump frequency operation (if the pump power is greater than 37KW, you need to use the reduced voltage start or other startup), after a certain delay according to the pressure changes and then make 2 # pump frequency operation. At this time, PLC switching pumps according to the actual water pressure changes in the frequency pump switching. When there is no water pool shutdown, motor undervoltage, overvoltage, wrong phase, motor failure, etc., can be issued by the buzzer alarm.