KE300A Inverter Parameter Description
136
These parameters are used to select PID given and feedback source.
Notice: Given value and feedback value of PID are percentage values.
100% of given value is corresponding to 100% of feedback value.
Given source and feedback source must not be same, otherwise PID will be malfunction.
PA-03
PID action direction
Factory default
0
Setting range
0
Positive
1
Negative
0: Positive. When the feedback value is greater than the given value, output frequency will be decreased,
such as tension control in winding application.
1: Negative. When the feedback value is greater than the given value, output frequency will be increased,
such as tension control in unwinding application.
PA-04
PID given/feedback range
Factory default
100.0
Setting range
PA-01(PID given through keypad)~ 1000.0
PID given feedback range is a non-dimensional unit. It must correspond to the actual measure range. For
example, if the measure range of the pressure meter is 1.0 Mpa, then this parameter should be set to 10.
PA-05
Proportional gain K
p
1
Factory default
20.0
Setting range
0.0 ~ 100.0
PA-06
Integration time T
i
1
Factory default
2.00s
Setting range
0.01s ~ 10.00s
PA-07
Differential time T
d
1
Factory default
0.000s
Setting range
0.00 ~ 10.000
Proportional gain K
p
1: It decides the adjustment intensity of the whole PID regulator. The higher the K
p
1 is,
the stronger the adjustment intensity is. When this parameter is 100, indicating the deviation between PID
feedback value and given value is 100%, the adjustment amplitude of the PID regulator on the output
frequency command is maximum frequency.
Integration time T
i
1: It decides the intensity of the integration adjustment of PID regulator. The shorter the
integration time is, the stronger the adjustment intensity is. Integration time is the time within which the
adjustment value reaches maximum frequency when the deviation between PID feedback value and given
value is 100%.
Differential time T
d
1: It decides the intensity of the deviation change rate of PID regulator. The longer the
differential time is, the stronger the adjustment intensity is. Differential time is the time within which if the
feedback value changes 100%, the adjustment value reaches maximum frequency.
PA-08
Cut-off frequency of PID reverse
Factory default
0.00Hz
Setting range
0.00 ~ P0-10 (maximum frequency)
In some situation, only when PID output frequency is negative (inverter reverse), PID can make given
value and feedback value in a same status. But the reverse frequency cannot be too high for some
applications. The reverse frequency upper limit is determined by PA-08.
