Chapter 5 Function parameter
45
two groups of PID parameters
whether stop integration when
output reaches limit
Integral separation:If the integral separation is set to active, when the integral pause of
multifunction digital DI(function 38) is active, PID integral will stop operations, at the time only
the proportional and derivative actions of PID is active.If the integral separation is set to inactive,
however the multifunction digital DI is active or inactive, the integral separation will be inactive.
Whether stop integration when output reaches limit: you can select whether or not to stop the
integral action after PID operation output reaches the maximum or the minimum value.If you select
to stop the integral action, the PID integral will stop the calculation, which may help to reduce the
overshoot of PID.
0.0%~100.0%( Max frequency)
PID initial value hold time
When the inverter starts, PID output is fixed at PID initial value(E2.23), and then continuous
for the PID initial value hold time(E2.24), at last PID begins operation of the closed-loop
adjustment.
PID initial value
E2.23
Time(t)
Output frequency(Hz)
PID initial value hold
time E2.24
functional schematic of PID initial value.
Maximum deviation of twice outputs(forward)
Maximum deviation of twice outputs(backward)
This function is used to limit the deviation between two PID output beats(2ms/beats), in order
to suppress the too fast changes of PID output so that stabilizing the inverter operation.
E2.25 and E2.26 respectively corresponds to the maximum of the absolute value of output
deviation when rotating forward and reverse.
5-1-14.E3 virtual terminal group
Virtual VDI1 terminal function selection
Virtual VDI2 terminal function selection
Virtual VDI3 terminal function selection
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