68
Dancer control with winding diameter
compensation for printers
(3) Example 1 of FR-A700-A1 parameter setting
[Machine specification] Winding device (for paper)
Minimum diameter: 100mm, Maximum diameter: 1000mm
Gear ratio: 1/3 , Maximum line speed: 200m/min
Dancer signal: 0 to 10V input
Main speed command: 0 to 10V analog signal (with 60s of
acceleration/deceleration cushion time)
Initial winding diameter calculation: enabled, Accumulated amount:
300mm, Diameter storage: enabled, tension setting output: necessary
Taper control: enabled, Diameter at taper start: 800mm, Taper ratio:
40%
Taper ratio setting: analog 0 to 10V
Parameter
Name
Initial
Value
Setting
Description
1
Maximum frequency
120Hz
90Hz
About 1.1 times (10% compensation by dancer roll) of the
maximum rotation speed (at V
max
with D
min
.)
79.58Hz
1.1
90Hz
7
Acceleration time
15s
0s
Setting is necessary to perform dancer control.
8
Deceleration time
15s
0s
9
Electronic thermal O/L relay
Rated
inverter
current
0A
For vector control dedicated motor (motor overheat protection by
Klixon)
10
DC injection brake operation frequency
3Hz
0.5Hz
13
Starting frequency
0.5Hz
0Hz
Setting is necessary to avoid operation interruption at initial
winding diameter calculation completion.
18
High speed maximum frequency
120Hz
90Hz
52
DU/PU main display data selection
0
4042
Setting for monitoring ("4042": winding diameter(40) is set in the
second monitor, line speed (42) is set in the third monitor.)
Other monitor settings related to dancer control
27: Dancer position (%), 41: Main speed, 43: Dancer
compensation speed, 44: Winding diameter compensation speed
45: Winding/unwinding length, 54: Dancer position deviation
71
Applied motor
0
30
Mitsubishi vector control dedicated motor (SF-V5RU)
72
PWM frequency selection
1
15
73
Analog input selection
1
10
Main speed 0 to 10V, Dancer 0 to 10V, polarity reversible
80
Motor capacity
9999
15kW
81
Number of motor poles
9999
4P
125
Terminal 2 frequency setting gain
frequency
60Hz
79.58Hz
128
PID action selection
40
40
Dancer control (reverse action)
129
PID proportional band
100%
100%
130
PID integral time
1s
10s
133
Target dancer position
500%
550.0%
Target dancer position is set after confirming upper and lower limit
dancer positions (set
Pr. 52
= 27 to show %).
134
PID differential time
9999
9999
Should be set gradually starting with 0.01s to bear mechanical
disturbance (fluctuation).
(Should not be set unless it is necessary as it causes hunting.)
158
AM terminal function selection
1
39
39: Dancer tension command
180
RL terminal function selection
0
83
Dancer/winding diameter compensation are enabled by the RL
signal ON. (Setting must be made when dancer control function is
used.)
181
RM terminal function selection
1
55
Stored winding diameter clear: cleared by RM signal ON.
186
CS terminal function selection
6
7
To input external signal of Klixon for SF-V5RU
190
RUN terminal function selection
1
51
Output when winding diameter calculation is completed signal
(positive logic)
267
Terminal 4 input selection
0
2
Input 0 to 10V (taper setting input)
369
Number of encoder pulses
1024
2048
706
Speed compensation gain
0%
100%
Setting when compensation rate needs to be constant. Setting for
X35 is not necessary.
707
Sampling time for winding diameter
calculation
9999
0.1s
Setting when result of calculated winding diameter fluctuates by
large.
FR-A700-A1
2 (0 to 10V)
1 (0 to 10V)
4 (0 to 10V)
RL
RM
CS
Main speed
Dancer/tension compensation
control selection (X83)
AM
RUN
Dancer tension
command
Initial winding diameter
calculation completion
signal (Y51)
Dancer signal
Taper ratio
Winding diameter
clear (X55)
External thermal (OH)