Chapter IV Function Parameter Table
72
Parameter
Code
Parameter
name
Parameter detailed description
Minimum
Unit
Factory
value
Change
changes in feedback, but just proportional
adjustment cannot achieve
non-differential control. The larger the
proportional gain, the faster the
adjustment speed of the system, but if it is
too large, oscillations will occur.
The adjustment method is to first set the
integration time to be very long and the
differential time to zero. Use only
proportional adjustment to make the
system run, change the target value, and
observe the stable deviation (static
difference) between the feedback signal
and the target value. If the static
difference is in the direction of target
value changes (for example, increasing
the input quantity, the feedback quantity
is always less than the target value after
the system is stable), continue to increase
the proportional gain, otherwise decrease
the proportional gain, and repeat the
above process until the static difference is
relatively small.
F8.07
Integration
time Ti1
Set range: 1
～
10000ms
Determine how fast the PID regulator
performs integral adjustment on the
deviation between the PID feedback and
the target value. The shorter the
integration time, the greater the
adjustment intensity.
When there is a deviation between the
feedback and the target value, the output
adjustment accumulates continuously. If
the deviation persists, increase the
adjustment constantly, until there is no
deviation. The integral regulator can
effectively eliminate static difference. If
the integral regulator is too strong, there
will be repeated overshoot, making the
system unstable until oscillation occurs.
The characteristics of the oscillation
caused by excessive integration are as
follows: The feedback signal swings up
and down at an input quantity, and the
swing gradually increases until it
oscillates.
The adjustment of the integration time
parameter is generally from large to
small, gradually adjust the integration
time, and observe the effect of the system
1ms
500ms
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