Load Cell Module DVP02LC-SL y Program explanations 1. The PLC switches from STOP to RUN. Due to the range for analog output voltage for the brake system is 0 to 10 VDC, we first set the voltage output mode for DVP04DA-SL to “0” 2. Use the FROM instruction to read the average weight from the load cell. (-10 to +10 V). 3. Calculate the output value (MV) by the PID instruction and output the value to DVP04DA-SL. y Devices D0: Average tension value D1: Target tension value D50: Voltage output from DVP04DA-SL D100: PID parameter y Steps of PID tuning 1. Read the average value from DVP02LC-SL and store it in D110. 2. For the PID operation: PV = D110, SV = D100, PID parameter = D500.
Place the result of PID operation in D50. 3. Output D50 to CH1 of DVP04DA-SL. 4. Set the PID sampling time to 10 ms. For the parameter settings: KP = D501, KI = D502, KD = D503. 5. After the tuning, we acquire the best parameters KP = 100, KI = 150 and KP = -5. DVP-PLC Operation Manual 34