APPARATUS FOR STABILIZING COMMUNICATION LINE USING POWER LINE AND DETECTING CIRCUIT SHORT IN FAN COIL UNIT, VENTILATION OR BOILER

摘要

The present invention relates to a power line communication stabilization and short circuit detection device of a fan coil unit (FCU), a ventilation device or a boiler, wherein the fan coil unit (FCU), a ventilation device or a power line communication stabilization device of a boiler is wired connected by a power line communication line A power supply unit for supplying power through a power line communication line in a power line communication stabilization device in a ventilation system, a fan coil unit or a boiler operated under the control of a remote control; a communication data receiving unit for receiving a communication signal (remote control command) from the wired remote control when the voltage of the communication signal received from the wired remote control through a power line communication line is lower than a preset voltage (a first reference voltage); and a communication data transmission unit for transmitting a communication signal to a wired remote control. According to the present invention, even when communicating with a wired remote control from a fan coil unit (FCU), a ventilation device, or a main board of a boiler, a voltage of about 5 Vdc or more is alive and because it operates in pulses, the power of the wired remote control can be stably maintained. , can have immunity from external electrical noise. In addition, by using 12V power as the power supply voltage, power consumption can be reduced, and it can be stabilized from interference between circuits or leakage voltage that occurs during product installation and operation. This can cut off the power supply.