YASKAWA MP2000 Series User Manual page 133

6.1 Example Setting of Motion Parameters for the Machine
6.1.5 Speed Reference
( 2 ) Speed Reference (OL10) Setting Examples
• Fixed parameter No. 5: Number of digits below decimal point = 3
• Fixed parameter No. 34: Rated motor speed = 3000 R/min
• Fixed parameter No. 36: Number of pulses per motor rotation = 16384 pulse/R (the value before multiply by 4)
The following table shows examples of settings for Speed Reference Setting (OL10) to obtain the target feed speed
(reference speed).
OW03, bits 0 to
3:
Speed Unit
Selection
(Reference unit/s)
n
(10
reference
units/min)
n = Number of dig-
its below decimal
point (= 3)
0.01%
( 3 ) Override (OW18) Setting Example
The Override parameter (OW18) can set the speed as a percentage (output ratio) of the target feed speed, in 0.01%
units. Override is set independently of Reference Unit, Number of Digits below Decimal Point, and other parameters.
A typical example of a Override setting is shown below.
Setting Example
Output ratio 25%: 25 ÷ 0.01 = 2500
6-10
Fixed Parame-
ter No. 4: Refer-
ence Unit
Setting
pulse
0
mm
(1 reference
unit = 0.001
mm)
pulse
1
mm
(1 reference
unit = 0.001
mm)
2
−
50%: 50 ÷ 0.01 = 5000
75%: 75 ÷ 0.01 = 7500
100%: 100 ÷ 0.01 = 10000
Setting Unit for
Target Feed
OL10 Speed
Speed
Reference
Example
Setting
50 (R/s)
pulse/s
1500
(R/min)
500 (mm/s)
Reference unit/
s (= 0.001
mm/s)
900
(mm/min)
50 (R/s)
1000 pulses/
min
(Fixed to 1000
regardless of
1500
value n)
(R/min)
mm/min 500 (mm/s)
3
(=10
refer-
ence units/min)
900
(mm/min)
50 (R/s)
0.01%
1500
(R/min)
Set Value for OL10 Speed Reference Setting
(Unit Conversion Method)
= 50 (R/s) × 65536 (pulses/R)
= 3276800 (pulse/s)
Set value: 3726800
= 1500 (R/min) ÷ 60 × 65536 (pulses/R)
= 1638400 (pulse/s)
Set value: 1638400
= 500 (mm/s) × 1000 (reference units/mm)
= 500000 (reference units/s (=0.001 mm/s))
Set value: 500000
= 900 (mm/min) ÷ 60 × 1000 (reference units/
mm)
= 15000 (reference units/s) (=0.001 mm/s))
Set value: 15000
= 50 (R/s) × 60 × 65536 (pulses/R) ÷ 1000 (fixed)
= 196608 (pulse/min)
Set value: 196608
= 1500 (R/min) × 65536 (pulses/R) ÷ 1000
(fixed)
= 98304 (pulses/min)
Set value: 98304
= 500 (mm/s) × 60
3
= 30000 (mm/min (=10 reference units/min)
Set value: 30000
= 900 (mm/min)
Set value: 900
= 50 (R/s) × 60 ÷ 3000 (R/min) × 10000 (0.01%)
= 10000 (0.01%)
Set value: 10000
= 1500 (R/min) ÷ 3000 (R/min) × 10000 (0.01%)
= 5000 (0.01%)
Set value: 5000