Veikong VFD500 Series User Manual page 109

Chapter 5 Function code
Function
Parameter name
code
P40.14 PID output feature
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
P40.15
output
lower limit of PID
P40.16
output
P40.17 Proportional gain KP1
P40.18 Integral time TI1
VFD500 high performance vector control frequency inverter user manual
Description
0: PID output is positive: when the feedback
signal exceeds the PID reference value, the
output frequency of the inverter will decrease
to balance the PID.
1: PID output is negative: When the feedback
signal is stronger than the PID reference
value, the output frequency of the inverter will
increase to balance the PID. For example, the
strain PID control during wrap down For
example, the strain PID control during wrap-
up
-100.0%～100.0%
-100.0%～100.0%
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 PID
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
- 107-
Default
0
100.0%
0.0%
5.0%
feedback and
1.00s
Property
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