JANCD-FC861-485465
The PLC program calculates the deviation between the current meter number of the sub pan head and the recorded meter number of the master pan head. If the sub pan head is slightly less, the servo wire feeding speed will be increased; otherwise, it will be reduced. The advantage of this method is that the linear speed of the speed measuring roller is basically unchanged, so the change of angular speed is also small. Changing the servo speed by slightly adjusting the servo gear ratio can not only increase the wire supply, but also reduce the tension fluctuation. The connection between micro PLC and tlc53 is realized through cpp110 communication card. In Sycon software, we can configure the enable control of servo, the switch control of electronic gear and the status of servo as PDO, which ensures the highest communication priority in control logic. In addition, the electronic gear ratio is sent by SDO in the program. We change the communication establishment mode to program delay establishment, which ensures that CANopen communication can still work reliably in frequent power outages. From the user's preliminary test results, the effect of this system has been greatly improved compared with the dual frequency conversion system. The error of the 20000 meter copy result is less than 3 meters, which is only about one tenth of the result of the previous dual frequency conversion scheme. The user is quite satisfied with this result.
客服1