4-17
1
Before Using the Products
2
Preparation
3
Connection
4
Setup
5
Adjustment
6
When in T
rouble
7
Supplement
Note
Related page
• A parameter is designated as follows:
Pr0.00 Parameter No.
Class
• For parameters which No. have a suffix of “
*
”
, changed contents will be validated
when you turn on the control power.
• P.3-32... “Inputs and outputs on connector X4”
1. Details of parameter
[Class 1] Gain adjustment
Pr1.05
2nd gain of position loop
Range
Unit
Default
Related
control mode
0 to 30000
0.1 /s
A,B,
C-
frame:
480
D
to
F-
frame:
320
P
F
Pr1.06
2nd gain of velocity loop
Range
Unit
Default
Related
control mode
1 to 32767
0.1 Hz
A,B,
C-
frame:
270
D
to
F-
frame:
180
P S T F
Pr1.07
2nd time constant of velocity loop
integration
Range
Unit
Default
Related
control mode
1 to 10000
0.1 ms
A,B,
C-
frame:
210
D
to
F-
frame: 3
10
P S T F
Pr1.08
2nd filter of speed detection
Range
Unit
Default
Related
control mode
0 to 5
—
0
P S T F
Pr1.09
2nd time constant of torque filter
Range
Unit
Default
Related
control mode
0 to 2500
0.01 ms
A,B,
C-
frame:
84
D
to
F-
frame:
126
P S T F
Related page
Position loop, velocity loop, speed detection filter and torque command filter have their 2
pairs of gain or time constant (1st and 2nd).
For details of switching the 1st and the 2nd gain or the time constant, refer to P.5-34 "Gain
Switching Function" of Adjustment.
The function and the content of each parameter is as same as that of the 1st gain and time
constant.
Pr1.10
Velocity feed forward gain
Range
Unit
Default
Related
control mode
0 to 4000
0.1 %
1000
P
F
Multiply the velocity control command calculated according to the internal positional
command by the ratio of this parameter and add the result to the speed command resulting
from the positional control process.
Pr1.11
Velocity feed forward filter
Range
Unit
Default
Related
control mode
0 to 6400
0.01 ms
0
P
F
Set the time constant of 1st delay filter which affects the input of velocity feed forward.
<Usage example of velocity feed forward>
The velocity feed forward will become effective as the velocity feed forward gain is gradually
increased with the velocity feed forward filter set at approx. 50 (0.5 ms). The positional
deviation during operation at a constant velocity is reduced as shown in the equation below
in proportion to the value of velocity feed forward gain.
Positional deviation [unit of command] = command speed [unit of command/s] /
positional loop gain [1 /s] × (100 - velocity feed forward gain [%]) / 100
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