S5: Keb Accel/Decel Settings - YASKAWA T1000V Technical Manual

5.11 S: Functions for Textile Applications
S4-13: KEB Minimum Operation Time
■
Sets the minimum period of time the KEB must operate for once it has been triggered. Even if the conditions that
triggered KEB may no longer be present, KEB will still continue until the time set to S4-13 has passed.
No.
S4-13
■ S4-14: KEB Reacceleration Prohibit Frequency
Sets the frequency level to prohibit re-acceleration after the power returned. If the drive output frequency fell below S4-
14 during KEB operation the drive will decelerate the motor to stop, even if the power returns.
A setting of 0.0 essentially disables this parameter.
No.
S4-14

◆ S5: KEB Accel/Decel Settings

S5 parameters governs acceleration and deceleration for KEB 1 and KEB 3 (S4-01 = 1 or 2).
■ KEB Decel Time Switching
The KEB 1 and KEB 2 functions can be used with an automatic switch over between two deceleration times. After the
KEB function starts, the drive decelerates the motor according to KEB Decel Time 1 (S5-01). When the output frequency
reaches the switching level set to S5-03 it changes the deceleration time over to KEB Decel Time 2 (S5-02) within the
time set in S5-04.
Figure 5.79
Output Frequency
S5-03 (KEB Decel Time
Switching Frequency)
0 Hz
No.
S5-01
S5-02
S5-03
S5-04
Note: 1. S5-01 is enabled as long as the output frequency is greater than S5-03. When the output frequency is less than or equal to S5-03, the
drive uses the deceleration time set to S5-02.
2. S5-03 is set as a percentage of the output frequency just before the KEB function is triggered. It determines the point at which the
drive switches between deceleration times while the KEB function is executed.
226
Name
KEB Minimum Operation Time
Name
KEB Reacceleration Prohibit Frequency
S5-02 (KEB Decel Time 2)
S5-01 (KEB Decel Time 1)
Figure 5.79 KEB Decel Time Switching
Name
KEB Decel Time 1
KEB Decel Time 2
KEB Decel Time Switching Frequency
KEB Decel Time Switching Time
YASKAWA ELECTRIC SIEP C710606 44B YASKAWA AC Drive T1000V Technical Manual
Setting Range
0 to 2000 ms
Setting Range
0.0 to 100.0%
S5-04 (KEB Decel Time
Switching Time)
Setting Range
0.0 to 200.0 sec
0.0 to 200.0 sec
0.0 to 100.0%
0.0 to 10.0 sec
Default
50 ms
Default
0.0%
Default
0.0 sec
0.0 sec
0.0%
0.0 sec