C2: S-Curve Characteristics - YASKAWA GA700 Technical Manual

• C1-01 to C1-09
• L2-06
• L2-07
1 : 0.1 s units
The acceleration and deceleration times are set in 0.1 s units. The setting range is 0.0 to 6000.0 s.
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C1-11: Accel/Decel Time Switchover Freq
No.
Name
(Hex.)
C1-11 Accel/Decel Time
Switchover Freq
(020A)
The acceleration and deceleration times for the drive are switched automatically when output frequency reaches
the setting value set to C1-11. Setting C1-11 = 0.0 Hz (0.0%) disables this function.
The following table lists the possible combinations of acceleration and deceleration time switchover frequencies
and the acceleration times when using the Motor 2 Selection function.
Table 11.28 Motor and Acceleration and Deceleration Time Combination
C1-11
Less than the setting value C1-07 [Acceleration Time
At least the setting value C1-01 [Acceleration Time
◆

C2: S-Curve Characteristics

Use S-curve characteristics to smooth acceleration and deceleration and to minimize abrupt shock to the load.
Set S-curve characteristic time during acceleration/deceleration at start and acceleration/deceleration at stop.
The following figure explains how S-curves are applied.
Figure 11.47 S-Curve Timing Diagram - Forward/Reverse Operation
Note:
• If STPo [Pull-Out Detection] occurs when starting a PM motor, try increasing the value set to C2-01.
• Setting the S-curve will increase the acceleration and deceleration times.
YASKAWA ELECTRIC SIEP C710617 01B YASKAWA AC Drive GA700 Technical Manual
V/f CL-V/f OLV CLV
Sets the frequency at which acceleration and deceleration times are
automatically changed.
Figure 11.46 Accel/Decel Time Switchover Freq
Motor 1
Acceleration Time Deceleration Time
C1-08 [Deceleration Time
4]
C1-02 [Deceleration Time
1]
Description
AOLV OLV/PM AOLV/PM CLV/PM EZOLV OLV/PM
Acceleration Time
C1-07 [Acceleration Time
4] 4]
C1-05 [Acceleration Time
1] 3]
11.4 C: Tuning
Default
(Range)
Determined by A1-02
(0.0 - 590.0 Hz)
Motor 2
Deceleration Time
C1-08 [Deceleration Time
4]
C1-06 [Deceleration Time
3]
647
11