Mitsubishi Electric FR-A700-A1 Instruction Manual page 71

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