![Nova Electronics MCX514 Скачать руководство пользователя страница 40](http://html1.mh-extra.com/html/nova-electronics/mcx514/mcx514_user-manual_1710400040.webp)
NOVA electronics Inc.
MCX514 -
27
-
27
-
<
The Prevention of Triangle Driving Profile in Decelerating Stop
>
In linear acceleration / deceleration driving, if the decelerating stop is commanded during acceleration, the speed curve forms a
triangle form. In S-curve acceleration / deceleration driving, if the decelerating stop is commanded during acceleration as shown
in Fig. 2.2-10, deceleration starts after the acceleration reaches 0.
①
Request for Deceleration Stop
②
Decrease the Acceleration value
③
Deceleration starts when Acceleration becomes 0
Acceleration
/ Deceleration
Speed
time
time
Fig. 2.2-10 Triangle Prevention of S-curve Acceleration / Deceleration by Decelerating Stop
■
Constraints for S-curve Acceleration / Deceleration Driving
a.
The drive speed cannot be changed during S-curve acceleration / deceleration fixed pulse driving.
b.
In S-curve acceleration / deceleration fixed pulse driving, if the drive pulse number is changed during deceleration, the
S-curve profile cannot be exactly tracked.
c.
In S-curve acceleration / deceleration fixed pulse driving, if an extremely low value is set as the initial speed, premature
termination (output of specified driving pulses is completed and terminated before the speed reaches the initial speed) or
creep (output of specified driving pulses is not completed even if the speed reaches the initial speed and the rest of driving
pulses is output at the initial speed) may occur.
d.
The drive speed can be changed during S-curve acceleration / deceleration continuous pulse driving.
However, the command to change the drive speed during acceleration / deceleration will be invalid.
To change the speed in S-curve acceleration / deceleration continuous pulse driving, make sure to change it during
constant speed driving (RR3 register Page1 CNST=1).
Speed increase / speed decrease (70h, 71h) commands and speed change by synchronous action will also be invalid.