List Of Parameters - Mitsubishi Electric MELDAS MDS-R Series Technical Specification And Instruction Manual

8-3 List of parameters

No. Abbrev. Parameter name
SV001 PC1* Motor side gear ratio
Machine side gear
SV002 PC2*
ratio
SV003 PGN1 Position loop gain 1
SV004 PGN2 Position loop gain 2
SV005 VGN1 Speed loop gain 1
SV006 VGN2 Speed loop gain 2
Speed loop delay
SV007 VIL
compensation
Speed loop lead
SV008 VIA
compensation
Current loop q axis
SV009 IQA
lead compensation
Current loop d axis
SV010 IDA
lead compensation
Current loop q axis
SV011 IQG
gain
Current loop d axis
SV012 IDG
gain
SV013 ILMT Current limit value
Current limit value in
SV014 ILMTsp
special control
Acceleration rate
SV015 FFC
feed forward gain
Parameters with an asterisk * in the abbreviation, such as PC1*, are validated with the NC power is turned ON again.
8. Setup
Set the motor side and machine side gear ratio.
For the rotary axis, set the total deceleration (acceleration) ratio.
Even if the gear ratio is within the setting range, the electronic gears may
overflow and cause initial parameter error (servo alarm No. 37).
Set the position loop gain. The standard setting is "33".
The higher the setting value is, the more precisely the command can be
followed and the shorter the positioning time gets, however, note that a
bigger shock is applied to the machine during acceleration/deceleration.
When using the SHG control, also set SV004 (PGN2) and SV057 (SHGC).
When using the SHG control, also set SV003 (PGN1) and SV057 (SHGC).
When not using the SHG control, set to "0".
Set the speed loop gain.
Set this according to the load inertia size.
The higher the setting value is, the more accurate the control will be,
however, vibration tends to occur.
If vibration occurs, adjust by lowering by 20 to 30%.
The value should be determined to be 70 to 80% of the value at the time
when the vibration stops.
If the noise is bothersome at high speed
during rapid traverse, etc, lower the speed
loop gain.
As in the right figure, set the speed loop
gain of the speed 1.2 times as fast as the
motor's maximum speed, and use this with
SV029 (VCS).
When not using, set to "0".
Set this when the limit cycle occurs in the full-closed loop, or overshooting
occurs in positioning.
When you set this parameter, make sure to set the torque offset (SV032
(TOF)). When not using, set to "0".
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).
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.
Set the normal current (torque) limit value. (Limit values for both + and -
direction.)
When the value is "500" (a standard setting), the maximum torque is
determined by the specification of the motor.
Set the current (torque) limit value in a special control (initial absolute
position setting, stopper control, etc). (Limit values for both of the + and -
directions.)
Set to "500" when not using.
When a relative error in the synchronous control is large, apply this
parameter to the axis that is delaying. The standard setting value is "0".
For the SHG control, set to "100".
To adjust a relative error in acceleration/deceleration, increase the value by
50 to 100 at a time.
8 - 11
Explanation
VGN1
VGN2
0 VCS
Setting
range (Unit)
1 to 32767
1 to 32767
1 to 200
(rad/s)
0 to 999
(rad/s)
1 to 999
-1000 to
1000
VLMT
(Maximum speed*1.2)
0 to 32767
1 to 9999
1 to 20480
1 to 4096
0 to 999
(Stall
current %)
0 to 999
(Stall
current %)
0 to 999
(%)