Frequency converter with 485 communication switchable ports

The utility model mainly discloses a frequency converter with 485 communication switchable ports. COMPRISING A FIRST HOUSING, a second shell is arranged in the first shell; circuit board is arranged in the second shell body, a frequency converter assembly and a wiring end are arranged on the circuit board, the outer end of the wiring end penetrates through the second shell and is connected with anexternal connector, the outer end of the external connector penetrates through the first shell to the outside, a plurality of 485 communication switchable ports are formed in the outer end of the external connector, waterproof tables are arranged in the 485 communication switchable ports, and water outlet pipes are arranged on the waterproof tables; wherein a fan assembly and a heat dissipation assembly are arranged between the first shell and the second shell, the first shell comprises a heat dissipation plate, heat dissipation holes are formed in the heat dissipation plate, a filter screenis arranged on the inner s