Mitsubishi Electric FR-E800, Инструкция по эксплуатации

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396
15. (A) Application Parameters
15.6 Dancer control
15.6
Dancer control
PID control is performed using detected dancer roll position as feedback data. The dancer roll is controlled to be at a designated
position.
*1 Initial value for the FR-E820-0175(3.7K) or lower, FR-E840-0095(3.7K) or lower, FR-E860-0061(3.7K) or lower, and FR-E820S-0110(2.2K) or
lower.
*2 Initial value for the FR-E820-0240(5.5K) or higher, FR-E840-0120(5.5K) or higher, and FR-E860-0090(5.5K) or higher.
Pr. Name Initial value Setting range Description
44
F020 Second acceleration/
deceleration time
5 s
*1
0 to 3600 s
Set the acceleration/deceleration time during dancer control.
In dancer control, this parameter becomes the acceleration/deceleration
time of the main speed.
This setting does not operate as the second acceleration/deceleration time.
10 s
*2
45
F021 Second deceleration
time
9999
0 to 3600 s
Set the deceleration time during dancer control.
In dancer control, this parameter becomes the deceleration time of the
main speed.
This setting does not operate as the second deceleration time.
9999 Pr.44 is the deceleration time.
128
A610
PID action selection 0
0 No PID action
40 PID reverse action Additive method: Fixed
For dancer control
41 PID forward action Additive method: Fixed
42 PID reverse action Additive method: Ratio
43 PID forward action Additive method: Ratio
Others Refer to page 380 .
129
A613
PID proportional band 100%
0.1% to
1000%
If a narrow proportional band is set (small parameter setting value), the
manipulated amount changes considerably by slight changes in the
measured value.
As a result, response improves as the proportional band becomes
narrower, though stability worsens as shown by the occurrence of hunting.
Gain Kp=1/proportional band
9999 No proportional control
130
A614
PID integral time 1 s
0.1 to 3600 s
With deviation step input, this is the time (Ti) used for obtaining the same
manipulated amount as proportional band (P) by only integral (I) action.
Arrival to the set point becomes quicker the shorter an integral time is set,
though hunting is more likely to occur.
9999 No integral control
131
A601
PID upper limit 9999
0% to 100%
Set the upper limit.
The FUP signal is output when the feedback value exceeds this setting.
The maximum input (20 mA/5 V/10 V) of the measured value (terminal 4)
is equivalent to 100%.
9999 No function
132
A602
PID lower limit 9999
0% to 100%
Set the lower limit.
The FDN signal is output when the measured value (terminal 4) falls below
the setting range.
The maximum input (20 mA/5 V/10 V) of the measured value is equivalent
to 100%.
9999 No function
133
A611
PID action set point 9999
0% to 100% Set the set point during PID control.
9999 Input of set point by terminal selected by Pr.609
134
A615
PID differential time 9999
0.01 to 10 s
With deviation ramp input, this is the time (Td) used for obtaining the
manipulated amount only by proportional action (P).
Response to changes in deviation increase greatly as the differential time
increases.
9999 No differential control
609
A624 PID set point/deviation
input selection
2
2 The set point is input through terminal 2.
3 The set point is input through terminal 4.
4 The set point is input via communication
5 The set point is input by the PLC function.
610
A625 PID measured value
input selection
3
2 The measured value is input through terminal 2.
3 The measured value is input through terminal 4.
4 The measured value is input via communication.
5 The measured value is input by the PLC function.