
4-48
Notes:
• Acceleration time is the time required to accelerate from 0 to 100% of maximum output frequency.
• Deceleration time is the time required to decelerate from 100 to 0% of maximum output frequency.
• Maximum frequency is set by parameter 01-02 or 01-16.
• If parameter 01-00=18, Maximum output frequency is set by parameter 01-02 or 01-16.
• If parameter 01-00≠18, Maximum output frequency = 50.00 or 60.00 depending on initialization mode.
• The default values for the acceleration / deceleration times are dependent on the AC Drive size.
• If the set acceleration and deceleration times are set too low, the torque limiting function or stall prevention function
can become activated if the load torque and/or inertia are relatively high. This will prolong the acceleration and or
deceleration times and not allow the set times to be followed.
AC Drive Size
Acceleration / Deceleration
Default Value
240V Series
480V Series
1–10HP
1–15HP
10s
15–20HP
20–30HP
15s
30–40HP
40–75HP
20s
(00-15) x(set frequency - Min. Starting Freq. “00-11”)
Actual acceleration time=
(00-14) x(set frequency - Min. Starting Freq. “00-11”)
Max. Output Freq. “00-12”
Actual deceleration time=
Max. Output Freq. “00-12”
Acceleration and deceleration times are represented by the three most significant (high order) digits. Set
acceleration and deceleration times with respect to maximum frequency.
Output
frequency
Acceleration time
Set frequency
Time
Deceleration time
Maximum frequency
Output
frequency
Acceleration time
Set frequency
Time
Deceleration time
Maximum frequency
RUN
STOP
RUN
STOP
Set Frequency = Maximum Frequency Set Frequency < Maximum Frequency
00-14
Acceleration Time 1 Default: –
Range
【
0.1–6000.0
】
Sec
00-15
Deceleration Time 1 Default: –
Range
【
0.1–6000.0
】
Sec
00-16
Acceleration Time 2 Default: –
Range
【
0.1–6000.0
】
Sec
00-17
Deceleration Time 2 Default: –
Range
【
0.1–6000.0
】
Sec
Note
: For additional acceleration/deceleration times, see parameters 00-21 through 00-24.