The invention relates to an energy-saving
automatic control system of an evaporative type cooling / condensing device. The
system comprises an intelligent temperature
transmitter, a
control unit, a
transducer and an efficient energy-saving motor. According to the energy-saving
automatic control system, the temperature value which is monitored by the intelligent temperature
transmitter in real time and a target set temperature value of an HMI are compared and analyzed through a PLC program, a
logic control instruction is output based on the analysis result according to the running mode and the running conditions preset by the PLC program, the
transducer receives the control instruction and a speed regulation
signal through a
USB communication protocol, accordingly, a
frequency conversion fan motor is driven to start or stop and automatically run in a speed regulation mode, so that it is achieved that the evaporative type cooling / condensing device automatically regulates the output power according to the temperature variation, and the automatic energy-saving running is achieved. Compared with an existing control technology, the energy-saving
automatic control system has the advantages of reducing the
energy loss of the device, improving the running efficiency and achieving automatic energy-saving running.