User Manual EM303B General Purpose Inverter F4-30 and F4-31 are for judging whether PID feedback is lost or not. If PID feedback please do not set F4-30=0.1 or 0.2), and lasting time> PID feedback loss detection time (F4 - 31), inverter trips EST (PID feedback loss) and will take the corrective action based on selected troubleshooting. 8.6 F5 Group: General Parameters of Vector Control In SVC1, inverter adjusts the speed dynamic response of vector control through regulating speed proportional gain, speed integral time and speed differential time of speed PID regulator.
The dynamic response of speed loop can be accelerated by increasing speed proportion gain, shortening speed integration time or prolonging speed differentiation time. However, if speed proportional gain is too big, speed integral time is too little, or speed differential time is too much, all of which will result in big system overshoot so that oscillation occurs. PID Parameters P2,Ti2,Td1 P1,Ti1,Td1 Switching Freq. 1 Figure7-17 Illustration of PID parameters Switching Freq. 0 Motor Speed User should adjust above speed PID parameters according to the real load features.
Usually, on the premise of no system oscillation, proportional gain can be increased as much as possible, and then adjust integral time and differential time to enable the system to have quick response with small overshoot. To ensure system quick dynamic response at both low speed and high speed, PID regulation needs to be conducted at low speed and high speed respectively. If it is below switching 116 No. Function Range Unit Default Type F4-30 PID Feedback Loss Detection Value 0.0~PID maximum scale 0.0 〇 F4-31 PID Feedback Loss Detection Time 0.0~6000.0 S 6000.0 〇 No.
Function Range Unit Default Type Speed Proportional Gain ASR P1 0.00～100.00 % 15.00 ● F5-00 _ Speed Integral Time ASR Ti1 0.00～30.00 0.00: No integration S 0.50 ● F5-01 _ Speed Differential Time ASR Td1 0.00～10.00 mS 0.00 ● F5-02 _ Speed Proportional Gain ASR P2 0.00～100.00 % 12.00 ● F5-03 _ Speed IntegralTime ASR Ti2 0.00～30.00 0.00: No integration S 0.50 ● F5-04 F5-05 _ Switching Frequency 0 0.00～Switching Frequency 1 Hz 5.00 〇 F5-06 Switching Frequency 1 Switching Frequency 0～Fmax Hz 10.00 〇