7. SERVO PARAMETERS
7.4 MDS-R-Vx
II - 207
No. Items Details Setting range
2249 SV049
PGN1sp
Position loop
gain 1 in
spindle
synchronous
control
Set the position loop gain during the spindle
synchronous control (synchronous tapping,
synchronous control with spindle/C axis).
Set the same value as the value of the spindle
parameter, position loop gain in synchronous
control.
When performing the SHG control, set this with
SV050 (PGN2sp) and SV058 (SHGCsp).
1 to 200
(rad/s)
2250 SV050
PGN2sp
Position loop
gain 2 in
spindle
synchronous
control
Set this with SV049 (PGN1sp) and SV058
(SHGCsp) if you wish to perform the SHG control in
the spindle synchronous control (synchronous
tapping, synchronous control with spindle/C axis).
When not performing the SHG control, set to "0".
0 to 999
(rad/s)
2251 SV051
DFBT
Dual feed back
control time
constant
Set the control time constant in dual feed back.
When "0" is set, the actual value that is set is 1ms.
The higher the time constant is, the closer it gets to
the semi-closed control, so the limit of the position
loop gain is raised.
0 to 9999
(ms)
2252 SV052
DFBN
Dual feedback
control dead
zone
Set the dead zone in the dual feedback control.
Set to "0" as a standard.
0 to 9999
(µm)
2253 SV053
OD3
Excessive error
detection width
in special
control
Set the excessive error detection width when servo
ON in a special control (initial absolute position
setting, stopper control, etc.).
If "0" is set, excessive error detection won’t be
performed.
0 to 32767
(mm)
2254 SV054
ORE
Overrun
detection width
in closed loop
control
Set the overrun detection width in the full-closed
loop control.
If the gap between the motor side detector and the
linear scale (machine side detector) exceeds the
value set by this parameter, it is judged to be overrun
and Alarm 43 will be detected.
When "-1" is set, the alarm detection won’t be
performed. When "0" is set, overrun is detected with
a 2mm width.
-1 to 32767
(mm)
2255 SV055
EMGx
Max. gate off
delay time after
emergency
stop
Set the time from when emergency stop is input to
when READY is forcibly turned OFF.
Normally, set the same value as SV056.
When using vertical axis drop prevention control, the
gate off will be delayed by the time set in SV048
even if SV055 is smaller than SV048.
0 to 20000
(ms)
2256 SV056
EMGt
Deceleration
time constant
at emergency
stop
In the vertical axis drop prevention time control, set
the time constant used for the deceleration control at
emergency stop. Set a length of time that takes from
rapid traverse rate (rapid) to stopping.
Normally, set the same value as the rapid traverse
acceleration/deceleration time constant.
0 to 20000
(ms)
2257 SV057
SHGC
SHG control
gain
When performing the SHG control, set this with
S003 (PGN1) and SV004 (PGN2).
When not performing the SHG control, set to "0".
0 to 1200
(rad/s)
