Chapter 5 Function code VFD500 high performance vector control frequency inverter user manual
The PID output characteristic is determined by P40.14 and Di terminal 42 function PID
positive/negative switching:
P40.14 = 0 and "42: PID positive/negative switching" terminal is invalid: : PID output characteristic is positive
P40.14 = 0 and "42: PID positive/negative switching" terminal is valid: : PID output characteristic is negative
P40.14 = 1 and "42: PID positive/negative switching" terminal is invalid: : PID output characteristic is negative
P40.14 = 1 and "42: PID positive/negative switching" terminal is valid: : PID output characteristic is positive
Upper limit of
PID output
lower limit of PID
output
0.00～200.0%
The function is applied to the proportional
gain P of PID input.
P determines the strength of the whole PID
adjuster. The parameter of 100 means that
when the offset of PID feedback and given
value is 100%, the adjusting range of PID
adjust is the Max. frequency (ignoring
integral function and differential function).
0.01s～20.00s
This parameter determines the speed of PID
adjustor to carry out integral adjustment on
the deviation of P ID fee dback and
reference.
When the deviation of PID feedback and
reference is 100%, the integral adjustor
works continuously after the time (ignoring
the proportional effect and differential effect)
to achieve the Max. Frequency (P01.06) or
the Max. Voltage (P12.21). Shorter the
integral time, stronger is the
adjustment
0.000s～0.100s
This parameter determines the strength of
the change ratio when PID adjustor carries
out integral adjustment on the deviation of
PID feedback and reference.
If the PID feedback changes 100% during
the time, the adjustment of integral adjustor
(ignoring the proportional effect and
differential effect) is the Max. Frequency
(P01.06) or the Max. Voltage (P12.21).
Longer the integral time, stronger is the
adjusting.
0.00s (no any
integral effect )～20.00s
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