5-40
F codes
E codes
C codes
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H codes
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b codes
r codes
J codes
d codes
U codes
y codes
Chap. 5 FUNCTION CODES
Acceleration Deceleration
Starting zone Ending zone Starting zone Ending zone
S-curve (Weak) 5% 5% 5% 5%
S-curve (Arbitrary)
Setting range: 0 to 100%
H57
Acceleration rate
for the 1st S-curve
(Leading edge)
H58
Acceleration rate
for the 2nd S-curve
(Trailing edge)
H59
Deceleration rate
for the 1st S-curve
(Leading edge)
H60
Deceleration rate
for the 2nd S-curve
(Trailing edge)
<S-curve acceleration/deceleration (weak): when the frequency change is 10% or more of the maximum frequency>
Acceleration or deceleration time (s) = (2 × 5/100 + 90/100+ 2 × 5/100) × (reference acceleration or deceleration time)
= 1.1 × (reference acceleration or deceleration time)
<S-curve acceleration/deceleration (arbitrary): when the frequency change is 30% or more of the maximum
frequency--10% at the leading edge and 20% at the trailing edge>
Acceleration or deceleration time (s) = (2 × 10/100 + 70/100 + 2 × 20/100) × (reference acceleration or deceleration time)
= 1.3 × (reference acceleration or deceleration time)
Curvilinear acceleration/deceleration
Acceleration/deceleration is linear below the base frequency (constant torque) but it slows down above the base
frequency to maintain a certain level of load factor (constant output).
This acceleration/deceleration pattern allows the motor to accelerate or decelerate with its maximum performance.
The figures at left show the acceleration characteristics.
Similar characteristics apply to the deceleration.
• If you choose S-curve acceleration/deceleration or curvilinear acceleration/deceleration in Acceleration/
Deceleration Pattern (H07), the actual acceleration/deceleration times are longer than the specified times.
• Specifying an improperly short acceleration/deceleration time may activate the current limiter, torque limiter,
or anti-regenerative control, resulting in a longer acceleration/deceleration time than the specified one.
F09 Torque Boost 1 (Refer to F37.)
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