YASKAWA CIMR-VU BA0001 Technical Manual page 385

No. Name
Momentary Power Loss
L2-01
Operation Selection
Momentary Power Loss Ride-
L2-02
Thru Time
Momentary Power Loss
L2-03
Minimum Baseblock Time
Momentary Power Loss
L2-04 Voltage Recovery Ramp
Time
L2-05
Undervoltage Detection
<5>
Level (Uv)
L2-06 KEB Deceleration Time
L2-07 KEB Acceleration Time
KEB Start Output Frequency
L2-08
Reduction
L2-11
Desired DC Bus Voltage
<5>
during KEB
Stall Prevention Selection
L3-01
during Acceleration
L3-02 Stall Prevention Level during
Acceleration
Stall Prevention Limit during
L3-03
Acceleration
YASKAWA ELECTRIC SIEP C710606 18F YASKAWA AC Drive – V1000 Technical Manual
Description
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.
Sets the Power Loss Ride-Thru time. Only effective when
L2-01 = 1.
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.
Sets the time for the output voltage to return to the preset V/f
pattern during Speed Search.
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.
Sets the time required to decelerate from the speed when KEB
was activated to zero speed.
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.
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
Sets the desired value of the DC bus voltage during KEB.
L3: Stall Prevention Function
Use L3 parameters to configure the Stall Prevention function.
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.
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.
Sets Stall Prevention lower limit during acceleration when
operating in the constant power range. Set as a percentage of
the drive's rated current.
B.2 Parameter Table
Control
Mode
Range Def.
O
V/ P
L
f M
V
0 to 2 0 A A A
For a restart to occur, the run command
must be maintained throughout the Ride-
Thru period.
<3>
0.0 to 25.5 A A A
<4>
0.1 to 5.0 A A A
<3>
0.0 to 5.0 A A A
<3>
150 to 210 A A A
<6>
0.0 to
0.0 s A A A
200.0
0.0 to 25.5 0.0 s A A A
0 to 300 100% A A A
150 to 400 E1-01
A A A
V x 1.22
0 to 2
1 A A A
<7>
<8>
0 to 150
A A A
<18>
<18>
0 to 100 50% A A A
Addr.
Pg.
Hex
485
218
486 218
487 218
488 218
489 218
48A 220
48B 220
48C 221
461 221
48F 221
490 222
491 223
B
385