Yaskawa MP2000 Series: Built-in SVB or SVB-01 Motion Module - Manual (Page 157)

5.1 Example Setting of Motion Parameters for the Machine
5.1.5 Speed Reference
5-10
( 1 ) Speed Reference (OL 10) Setting Examples
• No. 5: Number of digits below decimal point = 3
• No. 34: Rated motor speed = 3000 R/min
• No. 36: Number of pulses per motor rotation = 65536 P/R
The following table shows examples of settings for Speed Reference Setting (OL 10) to obtain the target feed speed
(reference speed).
* When reference unit is set to “pulse” and Speed Unit is set to “10n reference units/min,” the unit for OL 10 will be
1000 pulses/min, regardless of the number of places after the decimal point.
( 2 ) 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 Selection, Number of Digits below Decimal Point, and other
parameters.
Override cannot be set for SVR (Virtual Motion Module).
A typical example of Override setting is shown below.
Setting Example
Output ratio 25%: 25 ÷ 0.01 = 2500
50%: 50 ÷ 0.01 = 5000
75%: 75 ÷ 0.01 = 7500
100%: 100 ÷ 0.01 = 10000
Speed Unit Setting Reference Unit Reference Speed
Speed Reference Parameter Settings (OL 10)
Method
0
Reference unit/s
pulse
• 500 R/s
500 (R/s) × 65536 (pulse/R)
= 37268000 (pulse/s)
• 1500 R/min
1500 (R/min) × 65536 (pulse/R) ÷ 60 (s)
= 1638400 (pulse/s)
mm
• Feed speed of 500 mm/s
with a machine that trav-
els 10 mm for each rota-
tion
500 (mm/s) ÷ 0.001
= 500000 (0.001 mm/s)
Determined by feed speed and number of digits below
decimal point (0.001 in the above equation), regardless
of machine configuration.
• Feed speed of 900 mm/
min with a machine that
travels 10 mm for each
rotation
900 (mm/min) ÷ 0.001 ÷ 60 (s)
= 15000 (0.001 mm/s)
Determined by feed speed and number of digits below
decimal point (0.001 in the above equation), regardless
of machine configuration.
1
10 n reference units/
min
(n: Number of digits
below decimal point)
(= 3)
pulse *
• 500 R/s
500 (R/s) × 65536 (pulse/R) ÷ 1000 × 60 (s)
= 1966080 (1000 pulse/min)
• 1500 R/min
1500 (R/min) × 65536 (pulse/R) ÷ 1000
= 98304 (1000 pulse/min)
mm
• Feed speed of 500 mm/s
with a machine that trav-
els 10 mm for each rota-
tion
500 (mm/s) ÷ 0.001 ÷ 1000 × 60 (s)
= 30000 (mm/min)
Determined by feed speed and number of digits below
decimal point (0.001 in the above equation), regardless
of machine configuration.
• Feed speed of 900 mm/
min with a machine that
travels 10 mm for each
rotation
900 (mm/min) ÷ 0.001 ÷ 1000
= 900 (mm/min)
Determined by feed speed, regardless of machine con-
figuration.
2
0.01%
− • 1500 R/min
1500 (R/min) ÷ 3000 (R/min) × 100 (%) ÷ 0.01
= 5000 (0.01%)
Determined by what percentage the feed speed is of the
rated speed.