Mitsubishi Electric M800 Series Manual page 620

M800/M80/E80/C80 Series Alarm/Parameter Manual
16 Machine Parameters
#13073 SP073 VGVN
If noise is bothersome during high speed rotation, it may be reduced by lowering the speed loop gain at high
speed.
Set this value to ensure the adequate response by suppressing noise and vibration at low speeds and in-
creasing the speed loop gain at high speeds for a high-speed spindle of machining center, etc.
As shown below, set the speed loop gain rate for the overspeed detection speed in SP073 (VGVN), and use
with SP074 (VGVS).
When not using, set to "0".
The overspeed detection speed (VLMT) is 115% of the maximum motor speed (TSP).
This function can be used when either Speed loop gain set 1 or Speed loop gain set 2 is selected.
Scale[%]
100
VGVN
(SP073)
<100
When lowering the speed loop gain at high speed
---Setting range---
0 to 999 (%)
#13074 SP074 VGVS
If noise is bothersome during high speed rotation, it may be reduced by lowering the speed loop gain at high
speed.
Set this value to ensure the adequate response by suppressing noise and vibration at low speeds and in-
creasing the speed loop gain at high speeds for a high-speed spindle of machining center, etc.
As shown below, set the speed loop gain rate for the overspeed detection speed in SP073 (VGVN), and use
with SP074 (VGVS).
When not using, set to "0".
The overspeed detection speed (VLMT) is 115% of the maximum motor speed (TSP).
This function can be used when either Speed loop gain set 1 or Speed loop gain set 2 is selected.
Scale[%]
100
VGVN
(SP073)
<100
When lowering the speed loop gain at high speed
---Setting range---
0 to 32767 (r/min)
#13075 SP075 DWSH
Set the slip frequency scale during deceleration.
Normally, set to "0". (For Mitsubishi adjustment)
---Setting range---
0 to 255 (1/16-fold)
Motor speed
[r/min]
VGVS VLMT
(SP074) (SP026x1.15)
Motor speed
[r/min]
VGVS VLMT
(SP074) (SP026x1.15)
Variable speed gain target value
Scale[%]
VGVN
(SP073)
>100
100
VGVS
(SP074)
When increasing the speed loop gain at high speed
Variable speed gain change start speed
Scale[%]
VGVN
(SP073)
>100
100
VGVS
(SP074)
When increasing the speed loop gain at high speed
Slip compensation scale during regeneration high-
speed coil
603
Motor speed
[r/min]
VLMT
(SP026x1.15)
Motor speed
[r/min]
VLMT
(SP026x1.15)
IB-1501279-H