7. SERVO PARAMETERS
7.4 MDS-R-Vx
II - 193
7.4 MDS-R-Vx
(1) Details for servo parameters
For parameters marked with a (PR) in the table, turn the NC power OFF after setting. After the power is turned
ON again, the parameter is validated.
!
CAUTION
!
In the explanation on bits, set all bits not used, including blank bits, to "0".
No. Items Details Setting range
2201
(PR)
SV001
PC1
Motor side
gear ratio
1 to 32767
2202
(PR)
SV002
PC2
Machine side
gear ratio
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).
1 to 32767
2203 SV003
PGN1
Position loop
gain 1
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).
1 to 200
(rad/s)
2204 SV004
PGN2
Position loop
gain 2
When using the SHG control, also set SV003 (PGN1)
and SV057 (SHGC).
When not using the SHG control, set to "0".
0 to 999
(rad/s)
2205 SV005
VGN1
Speed loop
gain 1
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.
1 to 999
2206 SV006
VGN2
Speed loop
gain 2
If the noise is bothersome at high speed during rapid
traverse, etc, lower the speed loop gain.
s shown below, 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".
VGN1
VGN2
VCS VLMT
0
(Maximum speed*1.2)
-1000 to 1000
2207 SV007
VIL
Speed loop
delay
compen-
sation
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".
0 to 32767
