Application examples
200
∗1
To keep the line speed constant, the winding speed decreases with increasing the roll diameter. The FR-A800-R2R inverter automatically
calculates the winding speed by calculating roll diameter.
∗2
Dancer feedback speed control (PID control) is performed to compensate the frequency so that measurements shown on the displacement
gauge (non-contact potentiometer) remains the same.
Example setting of parameters
The following shows mechanical specifications and parameter settings required for configuring the system shown as the
application example. The parameter settings are examples for a 15 kW motor and the 18.5 kW inverter used for the winding
roller.
Item
Specification
Item
Specification
Minimum roll diameter
100 mm
Accumulated amount
300 mm
Maximum roll diameter
1000 mm
Roll diameter storage
Enabled
Gear ratio
1/3
Tension setting output
Required
Maximum speed of the
actual line
200 m/min
Taper control
Enabled
Dancer signal
0 to 10 V input
Roll diameter at taper
start
800 mm
Line speed command
Analog signal, 0 to 10 V input (60
seconds cushion time enabled at
acceleration/deceleration)
Taper ratio
40%
Initial roll diameter
calculation
Enabled
Taper ratio setting
Analog signal, 0 to 10 V input
Pr.
Parameter name
Initial
value
Setting
value
Remarks
1
Maximum frequency
120 Hz
70 Hz
Set about 110% of the maximum speed (the maximum speed
refers to the motor speed for the minimum-diameter roll at the
maximum line speed) (the amount of dancer compensation:
about 10%).
ω
= Maximum line speed
/ (
π
× Minimum diameter × Gear ratio)
= 200 × 10
3
/ (
π
× 100 × 1/3) / 30
≒
63.66 Hz × 1.1
≒
70 Hz
Printing
unit
Displacement
gauge
Encoder
FR-A800-R2R
FR-A800-R2R
Line speed
setting
2
Encoder
∗1
Line speed (0 to 10 V)
2
AM
FR-A8AP
1
Dancer position (0 to ±10 V)
Dancer/tension control selection X114
RL
(Non-contact
potentiometer)
∗2
JOG
FM
AM
Actual line
speed
monitoring
Dancer
tension
command
Actual line speed
monitoring
FR-A8AP
Taper ratio
4
SF-
V5RU
Encoder
SF-
V5RU
Actual line speed
(single phase)
Actual line speed
(single phase)
Actual line speed
(single phase)
For intermediate roller
(reference axis)
For winding roller
Air
cylinder
Electro-pneumatic
converter
FR-A800-R2R
2 (0 to 10 V)
1 (0 to 10 V)
4 (0 to 10 V)
RL
RM
CS
Line speed
Dancer/tension control selection (X114)
AM
RUN
Dancer tension command
Winding diameter calculation completion
at star signal (Y232)
Dancer signal
Taper ratio
Stored winding diameter clear signal (X109)
External thermal relay signal (OH)
Summary of Contents for A800 Plus Series
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