1
1 OUTLINE OF THE DEDICATED FUNCTIONS
The following dedicated functions for winding and unwinding machine are added to FR-A700 series standard inverter. In this
supplementary instruction manual, specifications of the new functions are included. Refer to the FR-A700 Instruction Manuals
for functions not explained in this supplementary instruction manual.
This product is useful when difference between minimum diameter and maximum diameter is great and when feeding speed
is fast in winding machine with dancer roll.
The inverter torque is controlled by the tension control, inertia compensation and mechanical loss compensation. Thus,
dancer rolls and tension controllers are not required to roll up a sheet of paper when using this product.
This product is also useful for wiredrawing machine and to roll up paper in a printer.
• Dancer control function
• Winding diameter compensation function
• Tension control function
The following table shows valid control methods for each function.
: available,
: unavailable
Inverters with dancer control function, winding diameter compensation function and tension control function are indicated with
"-A1" at the end of their model names.
Function
Vector Control
Real Sensorless Vector Control
Advanced
Magnetic
Flux
Vector
Control
V/F
Control
Speed
Control
Torque
Control
Tension
control
(Torque
Control)
Speed
Control
Torque
Control
Tension
control
(Torque
Control)
Pr.800
setting
0, 2
1, 2
6
10, 12
11, 12
16
20
20
Dancer control
Winding diameter
compensation function
Tension Control
[Example]
FR-A720-1.5K-A1
Inverters with dancer control function, winding
diameter compensation function and tension
control function (for every capacity)
