Current Control Mode Selection; Current Gain Level Setting; Speed Detection Method Selection - YASKAWA SGD7S Product Manual

8.12.3

Current Control Mode Selection

Current control mode selection reduces high-frequency noise while the Servomotor is being
stopped.
The setting depends on the capacity of the SERVOPACK.
To use current control mode selection, use current control mode 2 (set Pn009 to n.1 or
n.2).
• SERVOPACK Models SGD7S-R70A, -R90A, -1R6A, -2R8A, -3R8A, -5R5A, and -7R6A
Parameter

n.

n.
Pn009
(default setting)

n.
• SERVOPACK Models SGD7S-120A, -180A, -200A, -330A, -470A, -550A, -590A, and -780A
Parameter

n.

n.
Pn009
(default setting) Use current control mode 2 (low noise).

n.
If current control mode 2 is selected, the load ratio may increase while the Servomotor is being
stopped.
Important
8.12.4

Current Gain Level Setting

You can set the current gain level to reduce noise by adjusting the parameter for current control
inside the SERVOPACK according to the speed loop gain (Pn100). The noise level can be
reduced by decreasing the current gain level (Pn13D) from its default setting of 2,000% (dis-
abled). However, if the setting is decreased, the level of noise will be lowered, but the response
characteristic of the SERVOPACK will also be reduced. Adjust the current gain level within the
range that maintains the SERVOPACK response characteristic.
Current Gain Level
Pn13D Setting Range
100 to 2,000
If the current gain level is changed, the response characteristic of the speed loop will also
change. Servo tuning must therefore be performed again.
Important
8.12.5

Speed Detection Method Selection

You can use the speed detection method selection to ensure smooth Servomotor speed
changes during operation. To ensure smooth motor speed changes during operation, set
Pn009 to n.1 (Use speed detection 2).
With a Linear Servomotor, you can reduce the noise level of the running motor when the linear
encoder scale pitch is large.

0
 Use current control mode 1.
1

2 Use current control mode 2 (low noise).

0 Use current control mode 1.

1

2
Setting Unit
1%
8.12 Additional Adjustment Functions

8.12.3 Current Control Mode Selection

Meaning
Meaning
Default Setting
2,000
When Enabled Classification
After restart Tuning
When Enabled Classification
After restart Tuning
When Enabled Classification
Immediately Tuning
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