Chapter 12 Description of Parameter SettingsC2000
12.1-01-8
First / Fourth Acceleration / Deceleration Frequency
Default: 0.00
Settings 0.00–599.00 Hz
This function does not require the external terminal switching function; it switches the
acceleration and deceleration time automatically by the Pr.01-23 setting. If you set the external
terminal, it is based on the external terminal first, and not on Pr.01-23.
When using this function, set the S-curve acceleration time to 0 if the fourth acceleration time is
set too short.
As the usage of Pr. 01-23, for instance, under Pr. 01-00=80 Hz and Pr. 01-23=40 Hz:
a. If Pr. 01-02=10s, Pr. 01-18=6s, then the 0–40 Hz acceleration time is 3s and 40–80 Hz
acceleration time is 5s.
b. If Pr. 01-13=8s, Pr. 01-19=2s, then 80–40 Hz deceleration time is 4s and 40–0 Hz
deceleration time is 1s.
S-curve Acceleration Begin Time 1
S-curve Acceleration Arrival Time 2
S-curve Deceleration Begin Time 1
S-curve Deceleration Arrival Time 2
Default: 0.20
Settings Pr.01-45=0: 0.00–25.00 seconds
Pr.01-45=1: 0.00–250.0 seconds
It Sets a slow start when the drive begins to accelerate at the start. The acceleration and
deceleration curve adjust the S-curve acceleration and deceleration according to the parameter
value. When you enable this function, the drive has a different acceleration and deceleration
curve based on the acceleration and deceleration time.
The S-curve function is disabled when you set the acceleration and deceleration time to 0.
When Pr. 01-12, Pr. 01-14, Pr. 01-16, Pr. 01-18 Pr. 01-24 and Pr. 01-25,
the actual acceleration time = Pr. 01-12, Pr. 01-14, Pr. 01-16, Pr. 01-18 + (Pr. 01-24 + Pr. 01-25)/2
When Pr. 01-13, Pr. 01-15, Pr. 01-17, Pr. 01-19 Pr. 01-26 and Pr. 01-27,
the actual deceleration time = Pr. 01-13, Pr. 01-15, Pr. 01-17, Pr. 01-19 + (Pr. 01-26 + Pr. 01-27)/2
01-24
01-25
01-26
01-27
Frequency
Time
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