Application Case Industrial Automation BU, Delta Electronics, Inc. Case Issued by Applicable to Application of Delta’s Industrial Automation Products in Spray Machine for Printed Circuit Board Solution Center Date October, 2009 Pages 2 DOP series human machine interface, DVP-EH2 series PLC, ASDA series AC servo motor and drive There are many patterns existing on an undivided printed circuit board (PCB), and every pattern has to be printed with the number of that board. We can use the absolute positioning function of Delta’s DVP-EH2 series PLC to complete positioning. The spray action does not execute when the servo stops but acts during the movement in order to increase the productivity of the machine. Therefore, this application case explains how to determine the spray timing during the motion and how to use X-Y positioning commands. The Entire Delta Control System Enter the coordinate to be sprayed into registers in the PLC by using Delta’s human machine interface, and the PLC will later control the servo to execute positioning. During the movement of the servo, the spray action continues to save the next coordinate data into E index register in the PLC to compare and come up with the next timing for spray. Operation 1) Servo returns to zero point. 品質至上 信賴第一 追求卓越 2) Moving to the first spray position (X=1, Y=1) and spraying the first pattern. QUALITY RELIABLITY EXCELLENT Application Case Industrial Automation BU, Delta Electronics, Inc. 3) Servo moves to the last line (X=7, Y=1) and sprays each pattern during the movement. 4) Moving to the next line (X=7, Y=2) and spraying the pattern during the movement to the first line (X=1, Y=2). System Efficiency The X-Y axis positioning can be achieved by DRVA (absolute positioning) instruction in DVP-EH2 series PLC. In the positioning process, only the next coordinate for the servo movement is required, and the timing for spraying pattern can be calculated through the comparison instruction. Due to the fact that there are many patterns on each printed circuit board, the handiness of entering the coordinate by the human machine interface is significant. The macro function in Delta’s human machine interface is able to fast copy the data, and the optimized communication between Delta’s human machine interface and PLC allows the great amount of coordinate data to display on the human machine interface, reducing data delays taking place in the changes of values or screens. Delta’s products utilized in this case: Product Model PLC DVP32EH00T2 Human machine interface DOPA75CSTD Servo drive ASDA*2 Parameter setting First axis: Y0=Pulse, Y1=DIR; Second axis: Y2=Pulse, Y3=DIR Spray trigger: Y6 1. 1-00=2: Pulse + symbol 2. 1-01=00: Pt control 3. 2-10=1: Powered to allow Servo On 4. 2-15=22: Reverse running limit protection (the signal has to be NC.) 5. 2-16=23: Forward running limit protection (the signal has to be NC.) 6. 2-17=21: Emergency stop protection (the signal has to be NC.) 7. 2-32=4: Gain adjusted to auto mode. More information on Delta’s industrial automation products, visit our website: http://www.delta.com.tw/industrialautomation 品質至上 信賴第一 追求卓越 QUALITY RELIABLITY EXCELLENT