Parameter Description
VD300 Series Inverter User Manual
- 130 -
P08.29
PID Output Positive Max
Value
0.0%~100.0%
100.0%
○
P08.30
PID Output Reverse
Max Value
0.0%~100.0%
0.0%
○
PID output positive, negative max value, used to limit PID output modulation.
P08.31
PID Feed forward Source
Selection
0: No feed forward
1: AI1
2: AI2
3: AI3 (extension card)
4: HS pulse
5: Communication
0
○
In PID closed-loop control, the feed forward source is added to the PID control output, to improve the
stability of the control system. The feed forward control scheme is applied to the system need linear
velocity synchronization and with high response speed, such as wire drawing machine applications.
P08.32
PID Feed-forward Gain
0.00~60.00
1.00
○
PID forward gain: the parameter is used to set feed forward source proportion relation.
P08.33
PID Positive Output
Maximum Variation
0.0%~100.0%
2.0%
○
P08.34
PID Output Reverse
Maximum
Variation
0.0%~100.0%
2.0%
○
Operation of the inverter PID control, the parameter is used to set
the variation ratio of PID actual
output.
P08.36
PID Adjust Selection
0: Continue integration arriving upper
and lower limit
1: Stop integration arriving upper and
lower limits
0
○
When PID control operation and using integration function to decide whether continue integration
when set upper/lower limit arrived.
Reach the upper/lower limit to continue integral: integral quantity has real-time response to the
changes between given quantity and feedback quantity, unless the internal integral limit has been
reached. When the size of trend between given quantity and feedback quantity changes, it takes
longer time to offset continuous integration effect, so integration will follow the changing tendency.
Reach the upper and lower limit to stop integration: the integrating quantity remains with no change,
when the size of trend between given quantity and feedback quantity varies, integration will quickly
follow the tendency.
P08.37
Feedback Lower Limit
when PID Action
0.0%: Unlimited
1%~100%
0.0%
○
Set the lower limit of the feedback of PID action, reduce the PID adjustment, in favor of the constant
of output.
P08.38
PID Computing
Benchmark (Not
Including Feed forward)
0: Relative to feed forward amount
1: Relative to 100%
1
◎
PID arithmetic benchmark source selection
Summary of Contents for VD300 Series
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