No.
Name
Description
Range
Def.
Control
Mode
Addr.
Hex
Pg.
V/
f
O
L
V
P
M
L2-01
Momentary Power Loss
Operation Selection
Enables and disables the momentary power loss function.
0: Disabled - Drive trips on (Uv1) fault when power is lost.
1: Power Loss Ride-Thru Time - Drive will restart if power
returns within the time set in L2-02.
2: CPU Power Active - Drive will restart if power returns as
long as the CPU is working.
0 to 2
0
A A A
485
For a restart to occur, the run command
must be maintained throughout the Ride-
Thru period.
L2-02
Momentary Power Loss Ride-
Thru Time
Sets the Power Loss Ride-Thru time. Only effective when
L2-01 = 1.
0.0 to 25.5
<3>
A A A
486
L2-03
Momentary Power Loss
Minimum Baseblock Time
Sets the minimum wait time for residual motor voltage decay
before the drive output reenergizes after power loss Ride-Thru.
If L2-03 is greater than L2-02, operation resumes after the time
set in L2-03.
0.1 to 5.0
<4>
A A A
487
L2-04
Momentary Power Loss
Voltage Recovery Ramp
Time
Sets the time for the output voltage to return to the preset V/f
pattern during Speed Search.
0.0 to 5.0
<3>
A A A
488
L2-05
<5>
Undervoltage Detection
Level (Uv)
Sets the DC Bus undervoltage trip level. If this is set lower
than the default setting, additional AC input impedance or DC
bus reactance may be necessary.
This value is used for KEB activation if L2-01 > 0.
150 to 210
<3>
<6>
A A A
489
L2-06
KEB Deceleration Time
Sets the time required to decelerate from the speed when KEB
was activated to zero speed.
0.0 to
200.0
0.0 s A A A
48A
L2-07
KEB Acceleration Time
Sets the time to accelerate to the frequency reference when
momentary power loss is over.
If set to 0.0, the active acceleration time (C1-01, C1-03, C1-05,
or C1-07) is used.
0.0 to 25.5 0.0 s A A A
48B
L2-08
KEB Start Output Frequency
Reduction
Sets the percentage of output frequency reduction at the
beginning of deceleration when the KEB function is started.
Reduction = (slip frequency before KEB) x (L2-08/100) x 2
0 to 300 100% A A A
48C
L2-11
<5>
Desired DC Bus Voltage
during KEB
Sets the desired value of the DC bus voltage during KEB.
150 to 400
V
E1-01
x 1.22 A A A
461
L3: Stall Prevention Function
Use L3 parameters to configure the Stall Prevention function.
L3-01
Stall Prevention Selection
during Acceleration
Selects the Stall Prevention method used to prevent excessive
current during acceleration.
0: Disabled - Motor accelerates at active acceleration rate. The
motor may stall if load is too heavy or accel time is too short.
1: General Purpose - When output current exceeds L3-02 level,
acceleration stops. Acceleration will continue when the output
current level falls below the L3-02 level.
2: Intelligent - The active acceleration rate is ignored.
Acceleration is completed in the shortest amount of time
without exceeding the current value set in L3-02.
0 to 2
<7>
1
A A A
48F
L3-02
Stall Prevention Level during
Acceleration
Used when L3-01 = 1 or 2.
100% is equal to the drive rated current.
Decrease the set value if stalling or excessive current occurs
with default setting.
0 to 150
<18>
<8>
<18>
A A A
490
L3-03
Stall Prevention Limit during
Acceleration
Sets Stall Prevention lower limit during acceleration when
operating in the constant power range. Set as a percentage of
the drive's rated current.
0 to 100
50%
A A A
491
B.2 Parameter Table
YASKAWA ELECTRIC SIEP C710606 18F YASKAWA AC Drive – V1000 Technical Manual
385
B
Parameter List