12.3 C: TUNING
568 SIEPYEUOQ2A01A AC Drive Q2A Technical Manual
1 : 0.1s
Sets acceleration and deceleration times in 0.1 s units. The setting range is 0.0 to 6000.0 s.
■ C1-11 Ac/Dec Switch Frequency
No.
(Hex.)
Name Description
Default
(Range)
C1-11
(020A)
Ac/Dec Switch Frequency
Sets the frequency at which the drive will automatically change acceleration and deceleration
times.
Determined by A1-02
(0.0 - 590.0 Hz)
When output frequency get C1-11 value, the drive automatically switches the acceleration and deceleration times.
Set this parameter to 0.0 to disable this function.
Figure 12.40 Accel/Decel Time Switching Frequency
Table 12.17 lists the possible combinations of acceleration and deceleration time switchover frequencies and the
acceleration times for the Motor 2 Selection function.
Table 12.17 Motor and Acceleration and Deceleration Time Combination
C1-11
Motor 1 Motor 2
Acceleration Time Deceleration Time Acceleration Time Deceleration Time
Less than the setting value C1-07 [Accel Time 4] C1-08 [Decel Time 4] C1-07 [Accel Time 4] C1-08 [Decel Time 4]
Equal to or more than the setting
value
C1-01 [Accel Time 1] C1-02 [Decel Time 1] C1-05 [Accel Time 3] C1-06 [Decel Time 3]
■ C1-14 Ac/Dec Base Frequency
No.
(Hex.)
Name Description
Default
(Range)
C1-14
(0264)
Ac/Dec Base Frequency
Sets the base frequency used to calculate acceleration and deceleration rates.
0.0 Hz
(0.0 - 590.0 Hz)
The acceleration and deceleration rates set in C1-01 to C1-09 [Accel Time 1 to Decel Time 4, Fast Stop Time] will
change when the value of C1-14 changes.
• When C1-14 = 0.0 Hz
– C1-01, C1-03, C1-05, C1-07 [Accel Time 1 to Accel Time 4]: Time to accelerate from 0 Hz to E1-04 [Max
Output Frequency]
– C1-02, C1-04, C1-06, C1-08 [Decel Time 1 to Decel Time 4], C1-09 [Fast Stop Time]: Time to decelerate
from E1-04 to 0 Hz.
Figure 12.41 Example 1: Acceleration/Deceleration Rate (When C1-14 = 0 Hz, E1-04 = 60 Hz, and the Frequency
Reference is 60 Hz)
• When C1-14 ≠ 0.0 Hz
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