The control logic of the inverter is controlled by the microprocessor, and DC power is required to be supplied through the switching power supply, including the motherboard, cooling fan and triggering circuit. The switching power supply uses the UC3844B chip, which is a standard circuit, and Siemens usually uses the solution of the chip manufacturer.
Frequency converter control logic
The control logic of the inverter is controlled by the microprocessor, and DC power is required through the power supply, including the motherboard, cooling fan and triggering circuit.
Switching power supply configuration
The switching power supply adopts the UC3844B chip, which is a standard circuit. Siemens usually uses the solution of the chip manufacturer.
Maintenance focus
During maintenance, you need to pay attention to the starting resistance, sampling resistance, short-circuit situation of the power supply, and the health status of the CU3844 chip of UC3844.
