B.3 Parameter Table
YASKAWA ELECTRIC SIEP C710616 30B YASKAWA AC Drive T1000A Technical Manual 411
Parameter List
B
n S6: Power KEB Function
n S9: Synchronous Operation
S5-09
(6C8H)
Frequency Gain at KEB Start
during Deceleration Sets the output frequency reduction step applied when power loss is detected during
deceleration. Percent of frequency reduction = (slip frequency just before KEB) × S5-09 × 2
Default: 100%
Min: 0%
Max: 300%
259
S5-10
(6C9H)
Synchronous Deceleration ov
Prevention
Enables or disables overvoltage prevention during synchronous KEB operation (S4-01 = 2).
0: Disabled (requires a braking option)
1: Enabled
Default: 0
Min: 0
Max: 1
259
S5-11
(6CAH)
KEB Frequency Reduction Step
Lower Limit
Sets the percentage to reduce the output frequency in steps at the start of KEB operation. The
reduction width is calculated as
Reduction width = Motor rated slip (E2-02) × S5-11
The drive compares the reduction width calculated from S5-11 with the reduction widths of S5-
07, S5-08, and S5-09, then uses the largest value to reduce the output frequency.
Note: When using one of the control modes for a PM motor, S5-11 will disabled, regardless of
what value it has been set to.
Default: 20%
Min: 0%
Max: 500%
259
No. (Addr.) Name Description Setting Page
S6-01
(6D0H)
<7> Default setting value is dependent on the motor code set to E5-01.
<9> Default setting value varies by the drive model (o2-04).
<21> Parameter value is changed if E2-11 is manually changed or changed by Auto-Tuning.
<24> Default setting is determined by the drive model (o2-04) and duty selection (C6-01).
<34> Default setting is determined by the control mode (A1-02).
DC Bus Capacity
Sets the size of any external capacitors that were added.
Default:
<9>
Min: 0 μF
Max: 65000 μF
260
S6-02
(6D1H)
Motor Acceleration Time The time required for the motor to accelerate from zero up to the maximum frequency at the
rated torque. If E2-11 is changed by the user or by performing Auto-Tuning, then S6-02 will
automatically be set to the value of a Yaskawa 4-pole motor.
Default:
<7> <21> <24>
Min: 0.001 s
Max: 10.000 s
260
S6-03
(6D2H)
Load / Inertia Ratio
Enter the ratio between the inertia of the load and the inertia of the motor the drive is running.
Default: 1.0
Min: 0.0
Max: 1000.0
260
S6-04
(6D3H)
DC Bus Adjustment Gain Sets the gain to keep the voltage in the DC bus at the target level. If overvoltage or undervoltage
is a problem at the start of Power KEB, gradually increasing S6-04 in increments of 0.1 may
help.
Default:
<34>
Min: 0.00
Max: 5.00
261
S6-05
(6D4H)
Accel/Decel Calculation Gain
Sets the gain used to calculate the acceleration and deceleration rates used for Power KEB,
overvoltage suppression, and “intelligent” method of Stall Prevention during deceleration (L3-
04 = 2).
Default: 1.00
Min: 0.00
Max: 200.00
261
S6-06
(6D5H)
ASR Primary Delay Time Constant
2
Sets the filter time constant in seconds for the time from the speed loop to the torque reference
output when the Power KEB Ride-Thru is enabled (S4-01 = 3).
Default: 0.000 s
Min: 0.000 s
Max: 0.500 s
261
S6-07
(6D6H)
Torque Limit Delay Time
Sets the filter time constant in seconds for the torque limit value to return to set value when the
Power KEB Ride-Thru is enabled (S4-01 = 3).
Default:
<34>
Min: 0.000 s
Max: 1.000 s
261
No. (Addr.) Name Description Setting Page
S9-03
(6FAH)
Speed Detection Change Rate
Limit
Assigns a limit to how much the motor speed detection may fluctuate each millisecond.
Default: 0.01 Hz
Min: 0.00 Hz
Max: 5.00 Hz
262
S9-06
(6FDH)
Speed Detection Width After
Coasting
Sets the motor speed detection width as soon as the motor is done coasting.
Once the motor is done coasting, the drive will apply the motor speed detection value if the
value detected is less than S9-06 plus the previous value.
Default: 0.20 Hz
Min: 0.00 Hz
Max: 1.00 Hz
262
No. (Addr.) Name Description Setting Page
All Modes
All Modes
All Modes
All Modes
All Modes
All Modes
All Modes
All Modes
OLV/PM AOLV/PM
CLV
V/f w/PG
CLV/PM
V/f OLV
OLV/PM AOLV/PM
CLV
V/f w/PG
CLV/PM
V/f OLV
OLV/PM AOLV/PM
CLV
V/f w/PG
CLV/PM
V/f OLV
OLV/PM AOLV/PM
CLV
V/f w/PG
CLV/PM
V/f OLV
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