Powtran PI9000 series User Manual page 168

Chapter 5 Function parameter
This parameter is used to select the process PID feedback signal channel.
The feedback value of process PID is also a relative value, the setting range is from
0.0% to 100.0%.
E2.03
PID action direction
PID
E2.04
feedback range
PID reference feedback range is a dimensionsless unit for PID
and PID feedback display(d0.16).
The 100.0% of the relative value of PID reference feedback corresponds to a
feedback range(E2.04). If E2.04 is set to 2000, when PID
display(d0.15) will be 2000.
PID
E2.05
cutoff frequency
In some cases, only when the PID output frequency is negative (i.e.the inverter
reverses), PID can control the reference value and the feedback value to the same states, but
the excessive inversion frequency is not allowed in some occasions, E2.05 is used to the
upper limit of determine inversion frequency.
E2.06
PID deviation limit
When the deviation between PID reference value and PID feedback value is less than
E2.06, PID will stop regulating action. Thus, when the deviation is lesser, the output
frequency will be stable, it is especially effective for some closed-loop control occasions.
PID differential
E2.07
limiting
The role of the differential is more sensitive in PID regulator, is likely to cause system
oscillation, generally the role is limited to a smaller range, E2.07 is used to set PID
differential output range.
PID
E2.08
change time
The PID reference change time means the required time that PID reference value
changes from 0.0% to 100.0%.
When the PID reference changes, the PID reference value will change linearly according
to the reference change time to reduce the adverse effects to the system caused by a sudden
reference change.
PID feedback filter
E2.09
time
PID output filter
E2.10
time
E2.09 is used for filtering the PID feedback quantity, the filter helps reduce the
influence of interference to the feedback quantity, but will bring the response performance of
the process closed loop system.
MIN (|AI1|, |AI2|)
Positive
Negative
reference
0 to 65535
inversion
0.00
frequency)
0.0% to 100.0%
0.00% to 100.00%
reference
0.00s to 650.00s
0.00s to 60.00s
0.00s to 60.00s
setting
to F0.19(maximum
162
8
0
0
1
1000
setting
display(d0.15)
setting
setting
is 100.0%, PID
0.00Hz
0
0.10%
0.00s
0.00s
0.00s
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