bnp-b2365(eng)b.pdf - 第280页
5. Spindle Adjustment 5 - 35 (9) Adjusting deceleration time When the deceleration time "td" is significantly different from the acceleration time "ta" ( td < 0.95 × ta, 1.1 × 1a < td) and no pr…
5. Spindle Adjustment
5 - 34
(8) Adjusting excitation rate
If the motor noise is excessive during constant-speed operation, adjust the variable excitation
(SP056) value downward in decrements of 10 from the standard setting of 50 (setting lower limit =
25). The SP033/bit9 parameter setting is an effective way to reduce noise for hi gh-speed operation
only (it lowers the excitation rate for high-speed operation only).
No. Abbr. Parameter name Details
Setting
range
Standard
SP056 PYVR Variable excitation
(min value)
Set the minimum value of the variable excitation rate.
Select a smaller value when gear noise is too high.
Larger value is more effective on impact response.
0 to 100
(%)
50
<For MDS-C1-SP/SPH/SPX/SPHX>
F EDCBA98765 4 3 2 10
poff hzs ront pycal pychg pyst pyoff sftk dflt 1a2m
bit Meaning when set to 0 Meaning when set to 1
Standard
9 pycal
(Conventional specifications) High-speed rate deceleration
method valid for minimum
excitation rate
0
SP033 SFNC1* Spindle function 1
5. Spindle Adjustment
5 - 35
(9) Adjusting deceleration time
When the deceleration time "td" is significantly different from the acceleration time "ta" (td < 0.95 × ta,
1.1 × 1a < td) and no problem with the acceleration time, adjust the deceleration time by changing
the target value of variable torque limit magnification at deceleration (SP087) setting. In cases,
however, where the variable torque characteristic cannot be lowered to the SP087 level, adjust by
changing the speed for starting change of variable torque limit magnification at deceleration (SP088)
setting.
No. Abbr. Parameter name
Details
Setting
range
Standard
SP087 DIQM* Target value of
variable torque limit
magnification at
deceleration
Set the minimum value of variable torque limit at deceleration. 0 to 150
(%)
75
Set the speed where the torque limit value at deceleration
starts to change.
Torque limit
Inversely proportional to
speed
SP088 DIQN*
Speed for starting
change of variable
torque limit
magnification at
deceleration
100%
SP087
SP088 SP017 Speed
0 to 32767
(r/min)
3000
Adjusting SP087, SP088
td > 1.1 × ta?
SP087, SP088 adjustment completed
Increase SP087 by +5.
YES
NO
Measure acceleration/deceleration
waveform at high speed
td < 0.95 × ta?
Increase SP087 by –5.
YES
NO
SP087<100 × – ?
SP088
SP017
Increase SP088 by –500.
YES
NO
5. Spindle Adjustment
5 - 36
5-3-3 Adjusting the orientation control
(1) Confirming the default parameters
Set the default parameters for each detector u sed in o rientation control.
(a) Motor PLG
Motor PLG orientation is possible only when the spindle and motor are coupled, or when they
are coupled 1:1 with gears (timing belt). The SP025 (GRA1) to SP032 (GRB4) parameters can
be set only to 1. The PLG with Z-phase must be mounted on the motor to be used.
(b) Spindle end detector
An accurate gear ratio (pulley ratio) is required from
the motor shaft to the spindle end detector rotary
axis.
Make sure that the correct number of gear teeth is
set in SP025 (GRA1) to SP032 (GRB4).
SP025 to SP028=A × C × E
SP029 to SP032=B × D × F
Set the gear ratio (A:X) between the spindle and
spindle end detector in SP 096 (EGAR).
No. Abbr. Parameter name Details
Setting
range
Standard
Set the gear ratio between the spindle end and the detector end
(except for the motor PLG) as indicated below.
Setting
value
Gear ratio
(deceleration)
Setting
value
Gear ratio
(acceleration)
0 1 : 1 -1 1 : 2
1 1 : 1/2 -2 1 : 4
2 1 : 1/4 -3 1 : 3
3 1 : 1/8
4 1 : 1/16
SP096 EGAR* Encoder gear ratio -3 to 4 0
S
p
indle end detecto
r
XS
p
indle
Spindle
moto
r
A
BC
D E
F
Spindle configuration when using
spindle end detecto r