Mitsubishi Electronics C64 ユーザーズマニュアル

137 

 

Set this when the limit cycle occurs in the full-closed 
loop, or overshooting occurs in positioning. 
Select the control method with SV027 (SSF1)/bit1, 0 
(vcnt). 
Normally, use “Changeover type 2”. 
When you set this parameter, make sure to set the 
torque offset (SV032 (TOF)).  When not using, set to 
“0”. 

No changeover 
When SV027 (SSF1)/ bit1, 0 (vcnt)=00 
The delay compensation control is always valid. 

Changeover type 1 
When SV027 (SSF1)/ bit1, 0 (vcnt)=01 
The delay compensation control works when the 
command from the NC is “0”. 
Overshooting that occurs during pulse feeding can 
be suppressed. 

2207 SV007 

VIL 

Speed loop 
delay 
compensation 

Changeover type 2 
When SV027 (SSF1)/ bit1, 0 (vcnt)=10 
The delay compensation control works when the 
command from the NC is “0” and the position droop 
is “0”.  Overshooting or the limit cycle that occurs 
during pulse feeding or positioning can be 
suppressed. 

0 to 32767 

2208 SV008 

VIA 

Speed loop 
lead 
compensation 

Set the gain of the speed loop integration control. 
The standard setting is “1364”.  During the SHG 
control, the standard setting is “1900”.  Adjust the 
value by increasing/decreasing it by about 100 at a 
time. 
Raise this value to improve contour tracking 
precision in high-speed cutting.  Lower this value 
when the position droop vibrates (10 to 20Hz). 

1 to 9999 

2209 SV009 

IQA 

Current loop q 
axis lead 
compensation 

1 to 20480 

2210 SV010 

IDA 

Current loop d 
axis lead 
compensation 

1 to 20480 

2211 SV011 

IQG 

Current loop q 
axis gain 

1 to 2560 

2212 SV012 

IDG 

Current loop d 
axis gain 

Set the gain of current loop. 
As this setting is determined by the motor’s electrical 
characteristics, the setting is fixed for each type of 
motor. 
Set the standard values for all the parameters 
depending on each motor type. 

1 to 2560