L2: Power Loss Ride Through - YASKAWA GA800 Maintenance & Troubleshooting

3.11 L: Protection Functions
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L2: Power Loss Ride Through

No.
Name
(Hex.)
L2-01 Power Loss Ride Through
Select
(0485)
L2-02 Power Loss Ride Through
Time
(0486)
L2-03 Minimum Baseblock Time
(0487)
L2-04 Powerloss V/f Recovery
Ramp Time
(0488)
L2-05 Undervoltage Detection Lvl
(Uv1)
(0489)
L2-06 Kinetic Energy Backup
Decel Time
(048A)
Expert
L2-07 Kinetic Energy Backup
Accel Time
(048B)
Expert
L2-08 Frequency Gain at KEB
Start
(048C)
Expert
L2-09 KEB Minimum Frequency
Level
(048D)
Expert
L2-10 Minimum KEB Time
(048E)
Expert
L2-11 KEB DC Bus Voltage
Setpoint
(0461)
Expert
L2-29 Kinetic Energy Backup
Method
(0475)
Expert
226
V/f CL-V/f OLV CLV AOLV
Sets the drive operation after a momentary power loss.
0 : Disable
1 : Enabled
2 : Enabled while CPU Power Active
3 : Kinetic Energy Backup: L2-02
4 : Kinetic Energy Backup: CPU Power
5 : Kinetic Energy Backup: DecelStop
Note:
When the CPU is inactive, b1-17 [Run Command at Power Up] sets operation at power up.
V/f CL-V/f OLV CLV AOLV
Sets the maximum time that the drive will wait until trying to restart after power loss.
V/f CL-V/f OLV CLV AOLV
Sets the minimum time to continue the drive output block (baseblock) after a baseblock.
V/f CL-V/f OLV CLV AOLV
Sets the time for the drive output voltage to go back to correct voltage after completing speed
searches.
V/f CL-V/f OLV CLV AOLV
Sets the voltage at which a Uv1 [DC Bus Undervoltage] fault is triggered or at which the KEB
function is activated. Usually it is not necessary to change this setting.
NOTICE: Damage to Equipment. When you set this parameter to a
value lower than the default, you must install an AC reactor on the input
side of the power supply. If you do not install an AC reactor, it will cause
damage to the drive circuitry.
V/f CL-V/f OLV CLV AOLV
Sets the deceleration time during KEB operation used to decrease the maximum output frequency to
0.
Note:
When L2-29 = 1, 2, or 3 [Kinetic Energy Backup Method = Single Drive KEB Ride-Thru 2,
System KEB Ride-Thru 1, or System KEB Ride-Thru 2] and you do KEB Auto-Tuning, the drive
will automatically set this value.
V/f CL-V/f OLV CLV AOLV
Sets the acceleration time to return the frequency to the frequency reference before a power loss after
canceling KEB operation.
V/f CL-V/f OLV CLV AOLV
Sets the quantity of output frequency reduction used when KEB operation starts as a percentage of
the motor rated slip before starting KEB operation.
V/f CL-V/f OLV CLV AOLV
Sets the quantity of output frequency reduction used as a percentage of E2-02 [Motor Rated Slip]
when KEB operation starts.
V/f CL-V/f OLV CLV AOLV
Sets the minimum length of time to operate the KEB after the drive detects a momentary power loss.
V/f CL-V/f OLV CLV AOLV
Sets the target value that controls the DC bus voltage to a constant level in Single Drive KEB Ride-
Thru 2. Sets the DC bus voltage level that completes the KEB operation for all other KEB methods.
V/f CL-V/f OLV CLV AOLV
Sets the KEB function operation mode.
0 : Single Drive KEB Ride-Thru 1
1 : Single Drive KEB Ride-Thru 2
2 : System KEB Ride-Thru 1
3 : System KEB Ride-Thru 2
Description
OLV/PM AOLV/PM CLV/PM EZOLV OLV/PM
OLV/PM AOLV/PM CLV/PM EZOLV OLV/PM
OLV/PM AOLV/PM CLV/PM EZOLV OLV/PM
OLV/PM AOLV/PM CLV/PM EZOLV OLV/PM
OLV/PM AOLV/PM CLV/PM EZOLV OLV/PM
OLV/PM OLV/PM AOLV/PM CLV/PM EZOLV
OLV/PM AOLV/PM CLV/PM EZOLV OLV/PM
OLV/PM AOLV/PM CLV/PM EZOLV OLV/PM
OLV/PM AOLV/PM CLV/PM EZOLV OLV/PM
OLV/PM AOLV/PM CLV/PM EZOLV OLV/PM
OLV/PM AOLV/PM CLV/PM EZOLV OLV/PM
OLV/PM OLV/PM AOLV/PM CLV/PM EZOLV
YASKAWA TOEPYAIGA8001B GA800 Drive Maintenance & Troubleshooting
Default
(Range)
0
(0 - 5)
Determined by o2-04, C6-01
(0.0 - 25.5 s)
Determined by o2-04, C6-01
(0.1 - 5.0 s)
Determined by o2-04, C6-01
(0.0 - 5.0 s)
Determined by o2-04 and
E1-01
(200 V Class: 150 - 210 V,
400 V Class: 300 - 420 V)
0.0 s
(0.0 - 6000.0 s)
0.0 s
(0.0 - 6000.0 s)
100%
(0 - 300%)
20%
(0 - 100%)
50 ms
(0 - 25500 ms)
Determined by E1-01
(Determined by E1-01)
0
(0 - 3)