B.3 Parameter Table
356 YASKAWA ELECTRIC SIEP C710606 44B YASKAWA AC Drive T1000V Technical Manual
S4-06
<15>
KEB End Voltage
Sets the DC bus voltage level at that the drive assumes
the power supply has returned. If this level is exceeded
for longer than S4-07 the drive starts reaccelerating to
the set frequency reference. The setting value depends
on the selection in parameter S4-02.
0.0 to
200.0
200.0% A A A 6B5 225
S4-07
<15>
KEB End Detection
Time
Sets the time for that the DC bus voltage must exceed
the level set in S4-06 in order to end the KEB function
and reaccelerate to the set frequency reference.
0 to 2000 0 ms A A A 6B6 225
S4-08
<15> <17>
KEB 1 Phase Loss
Detection Level
Defines the DC bus voltage ripple that indicates a one
phase loss, thus triggering the KEB function.
0 to 400 0 V A A A 6B7 225
S4-09
<15>
KEB 1 Phase Loss
Sampling Time
Sets the sampling time used to detect one input phase
loss.
0 to 3000 0 ms A A A 6B8 225
S4-10
<15>
KEB 1 Phase Loss
Detection Time
Sets the time that the ripple in the DC bus voltage must
exceed the level set in S4-08 to trigger one phase loss
detection.
0 to 10 10 ms A A A 6B9
225
S4-11
<15>
KEB Target Voltage
When KEB 1 or KEB 3 is selected and S4-02 is set to 0,
the drive attempts to keep the DC bus voltage at the
traget voltage defined in S4-11 multiplied by E1-01.
0.80 to
1.50
1.35 A A A 6BA 225
S4-12
<15>
KEB Hold Time
Once KEB is complete, S4-12 sets the time to hold the
frequency reference before reacceleration.
0.0 to 10.0 0.0 s A A A 6BB 225
S4-13
<15>
KEB Minimum
Operation Time
Sets the minimum operation time for KEB once it is
triggered.
0 to 2000 50 ms A A A 6BC 226
S4-14
<15>
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.
0.0 to
100.0
0.0% A A A 6BD 226
S5: KEB Accel/Decel Settings
S5 parameters govern acceleration and deceleration when performing KEB 1 and KEB 2.
S5-01
<15>
KEB Decel Time 1
Sets decel time 1 for the start of KEB. S5-01 is enabled
when the output frequency is greater than S5-03.
0.0 to
200.0
0.0 s A A A 6C0 226
S5-02
<15>
KEB Decel Time 2
Sets decel time 2 for the start of KEB. S5-02 is enabled
when the output frequency is less than or equal to S5-03.
0.0 to
200.0
0.0 s A A A 6C1
226
S5-03
<15>
KEB Decel Time
Switching Frequency
Sets the frequency for KEB to switch between KEB
decel time 1 and KEB decel time 2.
0.0 to
100.0
0.0% A A A 6C2 226
S5-04
<15>
KEB Decel Time
Switching Time
Sets the time constant used to switch over from
deceleration time 1 to deceleration time 2 during KEB.
0.0 to 10.0 0.0 s A A A 6C3 226
S5-05
<15>
KEB Synchronous
Acceleration Time
Sets time to accelerate from the frequency after KEB to
the set frequency reference. This setting can be used to
let multiple drives accelerate synchronously back to the
set speed after power loss.
0.0 to
200.0
0.0 s A A A 6C4 227
S5-06
<15>
S-Curve at KEB
Deceleration Start
Sets the S-curve time when KEB begins decelerating the
drive.
0.00 to
2.50
0.20 s A A A 6C5 227
S5-07
<15>
Frequency Gain at KEB
Start during Constant
Speed
Sets the output frequency reduction step applied when
power loss is detected during constant speed operation
and then KEB starts. Percent of frequency reduction =
(slip frequency just before KEB) × S5-07 × 2
0 to 300 100% A A A 6C6 227
S5-08
<15>
Frequency Gain at KEB
Start during
Acceleration
Sets the output frequency reduction step applied when
power loss is detected during acceleration and then KEB
starts. Percent of frequency reduction = (slip frequency
just before KEB) × S5-08 × 2
0 to 300 100% A A A 6C7 227
S5-09
<15>
Frequency Gain at KEB
Start during
Deceleration
Sets the output frequency reduction step applied when
power loss is detected during deceleration and then
KEB starts. Percent of frequency reduction = (slip
frequency just before KEB) × S5-09 × 2
0 to 300 100% A A A 6C8 227
S5-10
Synchronous
Deceleration ov
Prevention
Enables or disables overvoltage prevention during
synchronous KEB operation (S4-01 = 2).
0: Disabled (requires a braking option)
1: Enabled
0, 1 0 A A A 6C9 227
No.
Name Description Range Def.
Control
Mode
Addr
. Hex
Pg.
V/f
OL
V
PM
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