User Manual EM303B General Purpose Inverter F4-03 determines the maximum scale of PID setting signal and feedback signal. F4-04 determines the positive/negative options of PID output upper/lower limit. F4-04 cannot be set as 1. Please set PID output upper limit limit. F4-05=0 Positive setting, i.e. error and output are positive. F4-05=1 Negative setting, i.e. error is positive, output is negative. If feedback signal> the setting value of PID, the output frequency of inverter is required to drop in order to make PID reach balance. Take water supply as an example. If the pressure increases, the feedback of pressure increases.
The output frequency of inverter needs to drop for reducing pressure and keeping pressure constant. While, PID should be in positive setting. If feedback signal> the setting value of PID, the output frequency of inverter is required to rise in order to make PID reach balance. Take temperature control as an example, PID regulator should be under negative setting control. F4-06 Output gain is to regulate the PID output function range. The unit is %. F4-07 Proportion gain GP is the proportion gain of PID close-loop control algorithm. F4-08 Integration time constant GTi is the integration time constant of PID close-loop control algorithm.
When integration time constant is 0, integration function is disabled. F4-09 Differentiation time GTd is the differentiation time constant of PID close-loop control algorithm. 113 O Positive/Negative 0 Options of PID 1 Upper/Lower Limit T 0 1 nes place: PID Upper Limit Options : Positive : Negative ens place: PID Lower Limit Options : Positive : Negative 10 ● F4-04 No. Function Range Unit Default Type PID Regulation Setting 0: Positive Setting 1: Negative Setting 0 〇 F4-05 No. Function Range Unit Default Type F4-06 PID Output Gain 0 .00~100.00 % 100.00 ● No.
Function Range Unit Default Type F4-07 Proportional Gain GP 0.00~100.00 0.40 ● Integral Time GTi 0.00~300.00 0.00:No integration S 10.00 ● F4-08 F4-09 Differential Time GTd 0.00~100.00 mS 0.00 ●