Usually large wave soldering machines, production lines, but some customers such as laboratories, schools, small factories need a small lead-free wave soldering machine. Certain electronic equipment factory developed this product, using the Austrian letter OYES series PLC and touch screen. The device requires three temperature control, a total of three PID, the Austrian letter OYES series PLC to achieve 8-channel PID, to meet the equipment requirements. Matched on the touch screen with a high price.
II. Process Description
Dual-wave soldering machine is first necessary to solder temperature, preheat temperature, preheat temperature compensation temperature value added to a total of three temperature settings. When the condition is satisfied, the machine can be produced. The PCB board placed on the track, press the start button, the transmission motor running, start the pump, spray flux, PCB board flux coating is completed, the delay pump stops. When the PCB board to the left after the preheat zone, the transport motor is stopped, parked in the PCB board preheat zone, preheat countdown, after the time to transfer the motor starts, the right to run the PCB, tin pump motor start HAL, PCB board after preheat temperature compensation zone into the HAL area, after HAL zone, tin pump stops when the PCB to the right, the motor stops transmission, cold start the motor. Such a complete cycle is over.
III. Hardware Configuration
Input: detection switch, the operating switch.
Switch detection are: the right point switch, left switch point.
Switch operation are: start switch, emergency stop switch.
Output point: heating solid state relay three regions, the transmission motors, two motors tin pump, exhaust motors, pump motors, motor cooling, the power to protect themselves point.
Analog inputs: three zones of temperature detection.
Motor transport and tin pump motor speed is required, using a frequency converter, the speed required communication settings.
Model Number Function
FBS-32MA 1 master controller, AC 220V input, relay output
FBS-16EYT 1 8x24V, transistor output module
FBS-6TC 1 4-channel thermocouple input module
Panelvisa PV057TST 1 Touchscreen HMI
Including programming PLC program and touch screen program includes four major functions: Device parameters, manual debugging, production screen, alarm queries.
The following are some of the features: each movement device can be done manually debug screen is very useful when you start debugging and maintenance of equipment.
Device parameters can be set from the touch screen, including temperature, time, PID coefficients.
Alarm query, you can quickly find the cause of the malfunction.
Production data display screen is used in the production, buttons are placed in this picture, and user-friendly in this screen monitors three temperature zones, process instructions and operating in these images.
Transmission speed motor and pump motor tin set is set to the touch screen PLC, and then passed by the PLC via PORT1 each motor drive. Function uses the PLC MODBUS master station, very convenient.