33
Winding diameter compensation
function
3.8.2
Line speed input setting (Pr. 763 to Pr. 768)
(1) Line speed input selection (
Pr. 763)
Select input terminal of line speed command to perform winding diameter calculation.
When material thickness is set to
Pr. 752 Material thickness d1
(
Pr. 752
"9999"), calculate winding diameter not from line
speed but from the addition of material thickness and rotation number of a roll, but not from line speed.
(Refer to page 35)
.
*1
Not available during vector control.
*2
To switch among 0 to 5VDC, 0 to 10VDC, and 0 to 20mA, use
Pr. 73
setting as well as voltage/current input switch. (Refer to the Instruction Manual for
details.)
*3
To switch among 0 to 20mA, 0 to 10VDC, and 0 to 5VDC, use
Pr. 267
setting as well as voltage/current input switch. (Refer to the Instruction Manual for
details.)
(2) Unit conversion for line speed
(Pr. 764, Pr. 765, Pr. 766, Pr. 767)
Convert pulse input unit (kpps) and analog input unit (%), which are selected in
Pr.763 Line speed input selection
, to line
speed unit (mm(m)/min(sec)).
(3) Input filter
(Pr. 768)
Set the time constant of the first-order lag filter. Set a large time constant when you want to delay the tracking of the
speed command, and when the analog input voltage fluctuates, etc.
Filters can be applied to pulse train input when
Pr. 763
= "1, 2 or 7" by using
Pr. 768 Line speed input filter time constant
.
Filters can be applied to analog input with input filter time constant of
Pr. 74
when
Pr. 763
= "3, 4, 5 or 6".
Pr.763 Line speed input
selection
Unit
Line speed input terminal
0 (initial value)
—
— (Calculate line speed from main speed)
1
Pulse (kpps)
Terminal JOG single-phase pulse train input
2
FR-A7AP connection: encoder pulse input
(24V open collector/5V differential (A, B phase))
*1
3
Voltage (V)/ Current (mA)
Terminal 2 input (analog value 0 to 100%)
*2
4
Terminal 4 input (analog value 0 to 100%)
*3
5
Terminal 1 (analog value 0 to 100%)
6
Terminal 6 (analog value 0 to 100%) (FR-A7AZ)
7
pulse [kpps]
FR-A7AL connection: single-phase pulse train input
Parameter
Number
Name
Setting Range
Increments
Initial Value
Remarks
764
Pulse reference for line
speed input
0.01 to 200kpps
0.01kpps
30kpps
765
Voltage reference for line
speed input
0.1 to 100%
0.1%
50%
766
Line speed reference
1.0 to 6553.4
0.1
1000.0
767
Line speed unit
0, 1, 2, 3
1
0
0 : m/min
1 : m/sec
2 : mm/min
3 : mm/sec
Parameter
Number
Name
Setting Range
Increments
Initial Value
Remarks
768
Line speed input filter
time constant
0 to 5s
0.001s
0.025s
0: without filter
