NOVA electronics Inc.
MCX514 -
4
－
4
－
■
Speed Range-Free
MCX514 is a new motion control IC that has no multiple of speed (Range Setting) to set the drive speed. This will enable us to
freely set the speed from 1 pps up to 8 Mpps in increments of 1 pps.
When using the multiples of speed to set the speed by existing method, there are restrictions as described below.
•
For the detailed speed setting of low-speed, less multiples of speed must be set.
→
As a result, driving cannot be shifted to high-speed.
•
To perform the high-speed driving, larger multiples of speed must be set.
→
As a result, the detailed setting of drive speed cannot be configured.
MCX514 brings solutions to the inconvenience described above by Speed range-free, which makes it possible to directly change
the speed from low-speed such as 1 or 2 pps to high-speed such as 1 Mpps during the driving.
Time
V
1,000,000pps
163,927pps
7pps
Fig. 1.1-7
Speed Range-Free
■
Easy and High-Accuracy Speed Setting
Since there is no need to set multiples of speed (Range Setting), the user can set a drive speed of output pulses as a speed
parameter (at CLK = 16MHz).
Fig. 1.1-8 Speed Parameter Setting
In the range of 1 pps to 8 Mpps, it can output the drive speed that is set with high accuracy. Speed accuracy of the pulse output is
less than ± 0.1%, which is on the assumption that there is no frequency error of input clock (CLK). In fact, there is a frequency
error of input clock (CLK), and speed accuracy depends on it.
High-speed driving without
speed range setting
Speed can be set in
increments of 1 pps
Detailed low-speed
setting
Drive speed (pps)
＝
V×
R
8,000,000
Acceleration (pps/sec)
＝
A×125×
R
8,000,000
Jerk (pps/sec
2
)
＝
K
10
62.5
6
×
×
R
8,000,000
Drive speed (pps)
＝
DV
Acceleration (pps/sec)
＝
AC
Jerk (pps/sec
2
)
＝
JK
Speed can be used as a parameter
→
no need to calculate a parameter
・
・
・
