Portal slewing crane remote control system based on PLC

The utility model provides a portal slewing crane remote control system based on PLC, including PLC (1), touch -sensitive screen (2), dc -to -ac converter (3), switch (4), power (5), auxiliary electrical power source (6), photovoltaic board (7) and existing field circuit (8), power (5) and auxiliary electrical power source (6) all with switch (4) are connected, power (5) go back and photovoltaic board (7) are connected, dc -to -ac converter (3) is connected in switch (4), PLC (1) is connected in dc -to -ac converter (3), PLC (1) is connected with touch -sensitive screen (2), PLC (1) still is connected with existing field circuit (8), existing field circuit (8) include a plurality of on -the -spot IO module (12), every one converter (13) are connected in on -the -spot IO module (12). The utility model discloses can realize the remote control to portal slewing crane. 本实用新型提供种基于PLC的门座起重机远程控制系统，包括PLC(1)、触摸屏(2)、逆变器(3)、电源开关(4)、电源(5)、辅助电源(6)、光伏板(7)和现场电路(8)，所述电源(5)和辅助电源(6)都与所述电源开关(4)连接，所述电源(5)还和光伏板(7)连接；所述电源开关(4)连接逆变