YASKAWA VS-626MT Series - Page 27

symbol b Function
LEVEL
Level adjustmentof
posi-
tion detection
ORIENT . SP
Speed
adjustment in orien-
tation mode
EH
.
GAIN
L . GAIN
4 .-
ADJUSTMENT
Gain,adjustment of servo
loop
BIAS
Fine djustmentof
orien-
tation position
FRICTION
Fine adjustment of orien-
tation position in H Gear
Adjustment
Move the motor in the forwarddirection slowly
and chech the
waveformat CHK4 . If the
voltage
isn't 20Vp-p
±0 .5V, adjust
to
correct it .
If the waveform is like (b) : terminals 13,
14
should be
switched
Level
20V i
±0 .5V
Orientation Speed=
NOR
.
*
NREF * 20V
Reference
(CHK1)

50
4500
*
6
x2011 .33
(a) Correct
Waveform

Waveform
Motor speed (not spindle speed) should be set over 30rpm in
orientation mode .
Orientation Seed Setting Example
NH

Max . rated speed in H gear )= 4500rpm
N REF (Max . rated speed reference )= 6V
N OR

(orientation speed)=50rpm
Adjust the gain, so there is no huntingwhen the spindle
stops
it
orientation position .
AdjustH . Gain in H gear
Adjsut L . Gain in L gear
Select L gear range,
adjust so the spindle position coincides
with the proper
orientation position .
Select H gear range, adjust so
spindlepositioncoincides with
the proper orientation position
.