Mitsubishi Electric FR-E710W-0.1K, Инструкция по эксплуатации

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253
Special operation and frequency control
4
P
ARAM
ETE
R
S
4.21.2 Dancer control (Pr. 44, Pr. 45, Pr. 128 to Pr. 134)
Performs PID control by feedbacking the position detection of the dancer roller, controlling the dancer roller is in the
specified position.
Parameter
Number
Name
Initial Value
Setting
Range
Description
44
Second
acceleration/
deceleration time
3.7K or less 5s
0 to 3600/360s
This parameter is the acceleration time of
the main speed during dancer control. It will
not function as second acceleration/
deceleration time.
5.5K, 7.5K 10s
11K, 15K 15s
45
Second
deceleration time
9999
0 to 3600/360s This parameter is the deceleration time of
the main speed during dancer control. It will
not function as second deceleration time.
9999
128
PID action
selection
0
0 PID action is not performed
20
PID reverse
action
Measured value (terminal 4)
Set value (terminal 2 or
Pr.
133 ) 21
PID forward
action
40
PID reverse
action
Addition
method:
fixed
For dancer
control
set point
(Pr.
133) ,
measured value
(terminal 4)
main speed
(speed
command of the
operation mode)
41
PID forward
action
Addition
method:
fixed
42
PID reverse
action
Addition
method:
ratio
43
PID forward
action
Addition
method:
ratio
50
PID reverse
action
Deviation value signal input
(L
ON
W
ORKS
, CC-Link
communication) 51
PID forward
action
60
PID reverse
action
Set point and measured value
input (L
ON
W
ORKS
, CC-Link
communication) 61
PID forward
action
129
∗1
PID proportional
band
100%
0.1 to 1000%
If the proportional band is narrow
(parameter setting is small), the
manipulated variable varies greatly with a
slight change of the measured value.
Hence, as the proportional band narrows,
the response sensitivity (gain) improves but
the stability deteriorates, e.g. hunting
occurs. Gain Kp = 1/proportional band
9999 No proportional control
130
∗1
PID integral time
1s
0.1 to 3600s
When deviation step is input, time (Ti) is the
time required for integral (I) action to
provide the same manipulated variable as
the proportional (P) action. As the integral
time decreases, the set point is reached
earlier but hunting occurs more easily.
9999 No integral control.
131 PID upper limit
9999
0 to 100%
Maximum value
If the feedback value exceeds the setting,
the FUP signal is output. The maximum
input (20mA/5V/10V) of the measured
value (terminal 4) is equivalent to 100%.
9999 No function