5-39
Under vector control with speed sensor
Acceleration/deceleration time
Function code
Acceleration/
deceleration time
ACC time DEC time
Switching factor of acceleration/deceleration time
( Refer to the descriptions of E01 to E07.)
RT1 RT2
Acceleration/
deceleration time 1
F07 F08
OFF OFF
Acceleration/
deceleration time 2
E10 E11 OFF
ON
Acceleration/
deceleration time 3
E12 E13
ON OFF
Acceleration/
deceleration time 4
E14 E15
ON ON
The combinations of ON/OFF states of the two
terminal commands RT2 and RT1 offer four
choices of acceleration/deceleration time 1 to 4.
(Data = 4, 5)
If no terminal command is assigned, only the
acceleration/deceleration time 1 (F07/F08) is
effective.
At jogging
operation
H54 H55
When the terminal command JOG is ON, jogging operation is
possible. (Data = 10)
( Refer to the description of C20.)
At forced stop － H56
When the terminal command STOP is OFF, the motor decelerates
to a stop in accordance with the deceleration time for forced stop
(H56). After the motor stops, the inverter enters the alarm state
with the alarm
er6
displayed. (Data = 30)
Acceleration/Deceleration pattern (H07)
H07 specifies the acceleration and deceleration patterns (patterns to control output frequency).
Data for
H07
Acceleration/
deceleration
pattern
Motion
Function
code
0
Linear The inverter runs the motor with the constant acceleration and
deceleration.
－
1
S-curve
(Weak)
Weak:
The acceleration/deceleration rate
to be applied to all of the four
inflection zones is fixed at 5% of
the maximum frequency.
－
2
S-curve
(Arbitrary)
To reduce an impact that
acceleration/deceleration would
make on the machine, the
inverter gradually accelerates or
decelerates the motor in both the
starting and ending zones of
acceleration or deceleration.
Arbitrary:
The acceleration/deceleration rate
can be arbitrarily specified for
each of the four inflection zones.
H57
H58
H59
H60
3
Curvilinear 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 the maximum performance of the motor.
－
S-curve acceleration/deceleration
To reduce an impact that acceleration/deceleration would make on the machine, the inverter gradually accelerates or
decelerates the motor in both the starting and ending zones of acceleration or deceleration. Two types of S-curve
acceleration/deceleration rates are available; applying 5% (weak) of the maximum frequency to all of the four inflection
zones, and specifying arbitrary rate for each of the four zones with function codes H57 to H60. The reference
acceleration/deceleration time determines the duration of acceleration/deceleration in the linear period; hence, the actual
acceleration/deceleration time is longer than the reference acceleration/deceleration time.
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