No. SX-DSV02829 -
60-
4-7-2 Current gain setting
There are two ways to set the current gain: theoretical value calculation (when the motor phase inductance and resistance are
known) with parameters and automatic setting with a tool.
This section describes how to calculate the theoretical value with parameters.
For information on the automatic setting with a tool, refer to “Section 4-7-4”.
Relevant parameter
Class No.
At-
trib-
ute
*1)
Title
Range
Unit
Function
9
08
R
Phase inductance
0-32767
0.01mH
Set the phase inductance of the motor.
If Pr9.12 “Automatic current response adjustment”
≠
0 and this value is
zero, Err60.0 “Motor setting error protection” occurs.
9
09
R
Phase resistance
0-32767
0.01Ω
Set the phase resistance of the motor.
If Pr9.12 “Automatic current response adjustment”
≠
0 and this value is
zero, Err60.0 “Motor setting error protection” occurs.
9
12
R
Automatic current
response
adjustment
0-100
%
When this value
≠
0, calculate the theoretical values of Pr9.13 and Pr9.14
from Pr9.08 and Pr9.09.
Set the standard for current responsivity when calculating Pr9.13
“Proportional current gain” and Pr9.14 “Integral current gain”.
The bigger the setting value is, the higher the current response is. But,
because it can cause unusual behaviors including oscillation, set an
appropriate value according to the operational state.
Roughly speaking, if Pr9.11 = 0 (carrier 6 kHz), set 30. If Pr9.11 = 1
(carrier 12 kHz), set 60.
If the setting value is zero, the theoretical values of Pr9.13 and Pr9.14 is
not calculated. Otherwise, set Pr9.13 and Pr9.14 manually or
automatically with a tool.
9
13
B
Proportional
current gain
0-32767
-
Set a proportional current gain.
In general, use the theoretical value as is calculated using Pr9.12.
9
14
B
Integral current
gain
0-32767
-
Set an integral current gain.
In general, use the theoretical value as is calculated using Pr9.12.
*1) For information on the parameter attribute, refer to the section 9-1.
*2) The value is calculated at power-on.
R1.00
Motor Business Unit, Panasonic Corporation