Description
YL-301C is a modular combination system, composed by material feeding and detection station, transportation station, processing station, installation station, installation and transportation station, conveyor belt station, transportation and sorting station, and sorting station, form a typical mechanical platform of automatic production line. Mechanism of the system uses technologies such as pneumatic drive, step motor position control, etc. At every station, a PLC is installed to perform the function of control. Interconnection between PLC is made through RS485 serial communications, which forms a distribution-type control system.
Functional Features
1. System control mode should adopt network control. The feeding station is designated as master station, the other workstations are as slave stations. System command working signal is offered by button/indicating light which is connected to feeding station, caution light installed in feeding unit should be able to display the main working state of whole system, including power on reset, start and stop, alarm, etc.
2. This system uses more than 40 sensors, among which there are fiber optical type, inductive type, photoelectric and magnetic sensor. And use a lot of pneumatic components, including various electronic control pneumatic valve, cylinders, pneumatic gripper, vacuum cup, vacuum generator, filter relief-pressure valve, translational working arm, 5/3-way pneumatic control device etc. Students can learn one pneumatic component independently or components how to work together.
3. Every workstation has a PLC, which makes this equipment be divided into 8 completely independent units, over 20 students can study at the same time, and everyone has a chance to practice. Students not only can learn PLC hardware and software technology, but also can learn the communication technology between the PLC. Electrical control part of the six stations is designed according to industrial standard and usual practice. Trainees can study the schematic circuit diagram, PLC I/O address check, and circuit wiring methods. 8 stations include various mechanical working systems, such as roatry working bench, material sorting device, etc. Trainees are able to conduct single station training, or reassemble the stations, and commission to normal working state, conduct the on-line training of the complete system, which inproves the practical ability of trainess.
4. Every unit of the system is divided into two modes: stand-alone and on-line, which are switched through chang-over switch. When select stand-alone mode, disconnecting on-line mode, it only actuate the program of the unit of every pushing start, only actuate the one step of the unit which enables trainees clearly know the working process of the unit. There is no coorelation with the other units. Working process we mention in above is uner on-line mode, and every state is under on-line mode, otherwise communication alarm may occur.
