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H51: Set the percentage of output to error. If P Gain is set to 50%, 50% of the error value will be 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 sec and the error
becomes 100%, 100% will be output in 1 sec. Adjusting the value may reduce the nominal error. If the
value is reduced, response will be faster but setting too low may lead to controller oscillation.
H53: Set the output value to the variation of the error. The error is detected by 0.01 sec. If differential
time is set to 0.01 sec and the percentage variation of error per 1 sec is 100%, 1% per 10msec is
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 ~ I21: To exchange PID to V/Fl operation, set one of P1-P5 terminal to 21 (switch between PID
mode and V/F mode).
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.
Cx2000 AC Drive
Chapter 8 Application
8-11
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