NOVA electronics Inc.
MCX514 -
5
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5
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Various Acceleration / Deceleration Drive Mode
Types of acceleration / deceleration driving
Acceleration / deceleration driving can perform the following driving.
Constant speed driving
Linear acceleration / deceleration driving (symmetry/ non-symmetry)
S-curve acceleration/deceleration driving (symmetry/ non-symmetry)
Automatic deceleration start
In position driving of linear acceleration/deceleration (symmetry/non-symmetry) and S-curve acceleration/deceleration
(symmetry), the IC calculates the deceleration start point when in deceleration, and automatically starts deceleration.
(This is not applied to non-symmetry S-curve acceleration/deceleration driving.)
S-curve acceleration/deceleration curve
S-curve acceleration/deceleration uses the method which increases / decreases acceleration or deceleration in a primary line,
and the speed curve forms a secondary parabola acceleration/deceleration. In addition, it prevents triangle waveforms by a
special method during S-curve acceleration/deceleration.
Constant Speed Driving
Time
V
Rapid Deceleration
Time
V
Time
V
Time
V
Sl
ow
Ac
ce
ler
ati
on
P=400000
P=200000
P=100000
P=50000
Time
V
Rapid Acceleration
S
lo
w
D
ec
ele
ra
tio
n
Manual Deceleration
Trapezoidal Acceleration/Deceleration Driving
(Symmetry)
Trapezoidal Acceleration/Deceleration Driving
(Non- Symmetry)
Parabola S- curve Acceleration/Deceleration Driving
(Symmetry)
Automatic Deceleration
Parabola S- curve Acceleration/Deceleration Driving
(Non- Symmetry)
Fig. 1.1-9 Acceleration / Deceleration Drive Mode
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Position Control
MCX514 has two 32-bit position counters: one is a logical position counter that counts the number of output pulses and the other
is a real position counter that counts the feedback number of pulses from an external encoder.
The current position can be read by data reading commands anytime.
By using with synchronous action, the operation can be performed by the activation factor based on position data, such as drive
speed change or start/stop of another axis driving at a specified position.
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Software Limit
MCX514 has a software limit function that controls driving to stop when the position counter is over a specified range. There are 2
stop types for when the software limit function is enabled: decelerating stop and instant stop.
