Nova Electronics MCX514, User Manual

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NOVA electronics Inc. MCX514 -
20
－ 20 －
decelerating stop. If low-speed searching, continuous pulse driving is performed at constant speed. And when the signal that is
enabled becomes active, MCX514 will perform instant stop.
This IC has automatic home search function. See chapter 2.5 for details of automatic home search function.
2.2
Acceleration and Deceleration
There are the following speed curves that can trace from drive pulse output: Constant speed driving which does not perform
acceleration / deceleration, Trapezoidal acceleration / deceleration driving which performs linear acceleration / deceleration to a
setting speed, and S-curve acceleration / deceleration driving which performs acceleration / deceleration to a specified drive speed
with a smooth curve.
And the following acceleration / deceleration driving is each available: Symmetry acceleration / deceleration where acceleration
and deceleration are equal and Non-symmetry acceleration / deceleration where acceleration and deceleration are set individually.

Constant speed driving

Acceleration / Deceleration driving
•
Trapezoidal acceleration / deceleration driving
・
linear acceleration / deceleration (Symmetry)
・
Non-symmetry linear acceleration / deceleration
•
S-curve acceleration / deceleration driving
・
S-curve acceleration / deceleration (Symmetry)
・
Non-symmetry S-curve acceleration / deceleration
2.2.1
Constant Speed Driving
Constant speed driving outputs drive pulses at a constant speed without acceleration / deceleration. To perform constant speed
driving, the drive speed must be set lower than the initial speed (that is the initial speed is higher than the drive speed.). Constant
speed driving performs the driving at the drive speed lower than the initial speed without acceleration / deceleration. Stop mode is
instant stop.
If the user wants to stop immediately when the home sensor or encoder Z-phase signal is active, perform the low-speed constant
speed driving from the beginning not acceleration / deceleration driving.
Speed
time
Initial Speed
Drive Speed
Fig. 2.2-1 Constant Speed Driving
To perform constant speed driving, the following parameters must be set.
Table 2.2-1 Setting Parameters
：
Constant Speed Driving
Parameter Symbol Comment
Initial speed SV Set higher than the drive speed (DV).
Drive speed DV
Drive pulse number /
Finish point
TP Not required for continuous pulse driving.