Chapter 4
4-15
Operation
4-6
User Parameters
This section describes the Servo Driver internal user parameters. Even if operating
using the Servo Driver’s front panel switch settings, be sure to understand the kinds of
functions that are set with the parameters.
Note R7A-PR02A Parameter Unit is required to change user parameters. Refer to Operation Manual
(I534) for detailed operation procedures.
4-6-1 Parameter Tables
• The parameters for which each digit number must be set separately are given with the digit number
added to the parameter number. For example, Pn001.0 (i.e., digit 0 of parameter Pn001).
• The default setting for parameters set using 5 digits are given in the table without leading zeros
(e.g., if the default setting is 00080, 80 is given in the table).
Parameter
No.
Parameter name
Description for parameters set with 5 digits
Default
Unit
Setting
range
Restart?
Digit
No.
Name
Setting
Description for parameters
with individually set digits
Pn000
Basic switches 1
0
Reverse rotation
mode
0
CCW direction is taken for posi-
tive command.
0010
–
–
Yes
1
CW direction is taken for posi-
tive command.
1
Control mode
selection
1
Position control by pulse train
command
2
Not used.
0
–
3
Not used.
0
–
Pn001
Basic switches 2
0
Stop selection if
an alarm occurs
when servo is
OFF
0
Servomotor stopped by
dynamic brake.
1002
–
–
Yes
1
Servomotor stopped by
dynamic brake.
Dynamic brake released after
Servomotor stops.
2
Servomotor stopped with free
run.
1
Not used.
0
–
2
Not used.
0
–
3
Not used.
1
–
Pn100
Speed loop gain
Speed loop response adjustment
80
Hz
1 to 2000
–
Pn101
Speed loop inte-
gral time constant
Speed loop integral time constant
2000
×
0.01 ms
15 to 51200 –
Pn102
Position loop gain Adjusts position loop responsiveness.
40
1/s
1 to 2000
–
Pn103
Inertia ratio
The ratio between the machine system inertia and the Servomotor rotor
inertia
300
%
0 to 10000
–
Pn109
Feed-forward
amount
Position control feed-forward compensation
0
%
0 to 100
–
Pn10A
Feed-forward
command filter
The position control feed-forward command filter
0
×
0.01 ms
0 to 6400
–
Summary of Contents for SMARTSTEP A Series
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