iG5A, product manual - H2flow

Group Display Parameter Name Setting Range DefaultI/OgroupDrivegroupI17~I24[Multi-function input terminalP1-P8 define]rEF [PID reference] -Fbk [PID feedback] -21 0 ~ 25 - -0~400/0~1000~400/0~1000.00/0.00.00/0.0UnitHz/%Hz/%• In order to control the amount of following water, pressure and temperature, do PIDcontrol to inverter output frequency.• Select H49 of function group 2 as a 1 (PID drive select). Then REF and FBK categoryshow. Set PID reference value in REF and real PID feedback amount is monitored at theFBK• PID drive is classified as two which are Normal PID mode and Process PID mode. It canbe set in the H54 (PID mode select) H50: Select the feedback type of PID controller.H50[PID Feedbackselect]0 Terminal I input (0 ~ 20[mA] )1 Terminal V1 input (0 ~ 10[V]) H51: Set the percentage of output to error. If P Gain is set to 50%, 50% of the error value willbe output. Higher value can reach the target control value faster but it may cause oscillation. H52: Set the time to output the accumulated error value. Set the time required to output 100%when the error value is 100%. If H52 - [Integral time for PID controller (I gain)] is set to 1 secand the error becomes 100%, 100% will be output in 1 sec. Adjusting the value may reduce thenominal error. If the value is reduced, response will be faster but setting too low may lead tocontroller oscillation. H53: Set the output value to the variation of the error. The error is detected by 0.01 sec in SViG5A.If differential time is set to 0.01 sec and the percentage variation of error per 1 sec is100%, 1% per 10msec is output. H54: PID Feed Forward Gain. Set the gain to add the target value to the PID controller output. H55, H56: It limits the output of the PID controller. H57: selects PID Reference H58: PID Reference and PID feedback’s units are classified as two which is [Hz] and [%].H58=0: [Hz], H58=1: [%] I17 ~ I24: To exchange PID to normal operation, set one of P1-P8 terminal to 21 and turn ON. rPM: Calculates the feedback from H50 into Motor frequency and displays it. rEF: indicates PID controller’s command value. Fbk: converts feedback amount set in H50 to motor frequency.8-10