7 Application Instructions API 50-99 Explanation: The system requires a gradual control. Therefore, the system will be overloaded or out of control if the process progresses too fast. Suggested solution: Solution 1: Longer sampling time Solution 2: Using delay instruction. See the figure below. 0rpm 511 0 rpm 3000 255 0 0V Pressure instruction delay MV converted to speed 5V Pressure instruction value (D0) PV D1 SV PID MV D5 Speed converted to voltage AC motor drive D1116 A wave B wave pressure meter Voltage converted to instruction value D1110 0 0V 511 10V Instruction value Instruction value 280 250 200 150 100 50 280 D2: Instruction interval value D3:
Instruction interval time Adjusted by the user according to the actual condition 0 0 t t A wave B wave DVP-PLC APPLICATION MANUAL 7-142