5.8 Additional Adjustment Function
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5
Adjustments
5.8.3
Current Control Mode Selection
This function reduces high-frequency noises while the linear servomotor is being stopped. This function is
enabled by default and set to be effective under different application conditions.
5.8.4
Current Gain Level Setting
This function reduces noises by adjusting the parameter value for current control inside the SERVOPACK
according to the speed loop gain (Pn100). The noise level can be reduced by reducing the current gain level
(Pn13D) from its factory setting of 2000% (disabled). If the set value of Pn13D is decreased, the level of noise
will be lowered, but the response characteristics of the SERVOPACK will also be degraded. Adjust the current
gain level within the allowable range at which SERVOPACK response characteristics can be secured.
5.8.5
Speed Detection Method Selection
This function can ensure smooth movement of the linear servomotor while the linear servomotor is running.
This function is disabled by default. Set the value of Pn009.2 = 1 to enable this function.
When the linear scale pitch is long, noise produced while the linear servomotor is running can be reduced by
using this function.
Input Voltage
Applicable SERVOPACK Model SGDV-
200 V
120A
A, 180A
A, 200A
A, 330A
A,
550A
A
400 V
3R5D
A, 5R4D
A, 8R4D
A, 120D
A,
170D
A, 260D
A
Parameter
Meaning
When Enabled
Classification
Pn009
n.
0
Selects the current control mode 1.
(Does not perform the switching.)
After restart
Tuning
n.
1
Selects the current control mode 2.
(Performs the switching.) [Factory setting]
• When this function is executed, the load ratio may increase while the linear servomo-
tor is being stopped.
Pn13D
Current Gain Level
Classification
Setting Range
Setting Unit
Factory Setting
When Enabled
100 to 2000
1 %
2000
Immediately
Tuning
• If the parameter setting of the current gain level is changed, the responsiveness char-
acteristic of the speed loop will also change. The servo must, therefore, be readjusted
again.
Speed
Position
Parameter
Meaning
When Enabled
Classification
Pn009
n.
0
Selects speed detection 1. [Factory setting]
After restart
Tuning
n.
1
Selects speed detection 2.
• If this function is changed, the responsiveness characteristic of the speed loop will
also change. The servo must, therefore, be readjusted again.
