Powtran PI160 Series, Руководство пользователя

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Chapter 5 Function parameter
96
Ch
ap
ter 5
PID Output
control amount
P
Td*s+1
1
Target
amount -
+
Feedback amount
Ti
1
S
1
Figure 5-31:Flow diagram of process PID principle
Code Parameter name Setting range
Factory
setting
Chang
e limits
E2.00 PID reference source
E2.01 setting 0
0
☆
`
Analog AI1 reference 1
Reserve
Panel potentiometer reference 3
High-speed pulse setting 4
Communications setting 5
Multi-stage command setting 6
E2.01 PID keyboard reference 0.0% to 100.0% 50.0%
☆
This parameter is used to select the process PID target value reference channel.
The set target value of process PID is a relative value, the setting range is from 0.0% to
100.0%. The feedback value of PID is also a relative value, the role of PID is to remain the
same for the two relative values.
E2.02 PID feedback source
Analog AI1 reference 0
0
☆
Reserve 1
Panel potentiometer setting 2
Reserve 3
High-speed pulse setting 4
Communications setting 5
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
Positive 0
0
☆
Negative 1
E2.04 PID reference feedback range
0 to 65535
1000
☆
PID reference feedback range is a dimensionsless unit for PID setting display(d0.15) and
PID feedback display(d0.16).
The 100.0% of the relative value of PID reference feedback corresponds to a setting
feedback range(E2.04). If E2.04 is set to 2000, when PID setting is 100.0%, PID setting
display(d0.15) will be 2000.
E2.05
PID inversion cutoff
frequency
0.00 to F0.19(Maximum frequency) 2.00Hz
☆
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 0.0% to 100.0% 0
☆
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.
E2.07 PID differential limiting 0.00% to 100.00% 0.10%
☆
The role of the differential is more sensitive in PID regulator, is likely to cause system