L2: Power Loss Ride Through - YASKAWA GA800 Programming Manual

Note:
• Display is in these units:
–Models 2004 to 2042, 4002 to 4023: 0.01 A
–Models 2056 to 2415, 4031 to 4720: 0.1 A
• When the current level > 0.0 A, you cannot set this value < 10% of drive rated current.
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L1-09: oL1 Current Level for Motor 2
No.
Name
(Hex.)
L1-09 oL1 Current Level for Motor
2
(1104)
When L1-09 = 0.0 A, the drive uses E4-01 [Motor 2 Rated Current] to detect the motor overload protection.
When L1-09 ≠ 0.0 A, the set value is the reference for motor overload protection.
Note:
• Display is in these units:
–Models 2004 to 2042, 4002 to 4023: 0.01 A
–Models 2056 to 2415, 4031 to 4720: 0.1 A
• When the current level > 0.0 A, you cannot set this value < 10% of drive rated current.
■
L1-13: Motor Overload Memory Selection
No.
Name
(Hex.)
L1-13 Motor Overload Memory
Selection
(046D)
0 : Disabled
1 : Enabled
Sets if the drive will calculate the motor again when the drive is energized again.
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L2: Power Loss Ride Through

L2 parameters set the drive operation during momentary power loss and the KEB Ride-Thru function method of
operation.
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KEB Ride-Thru Function
KEB is an acronym for Kinetic Energy Backup. If the drive detects a power loss or momentary power loss, it will
quickly decelerate the motor. The drive uses regenerative energy from the motor to keep the main circuit operating.
When you return power during motor deceleration, the drive returns operation to the status before the power loss. The
KEB Ride-Thru function is different than other functions for continuous operation. If the drive detects momentary
power loss, the motor will ramp to stop. It will not coast to stop. This function is applicable for applications in which
it is necessary to prevent materials from running out, for example control for film and fiber lines.
The KEB Ride-Thru function has 4 methods of operation. Parameter L2-29 [Kinetic Energy Backup Method] sets the
method.
When you use the KEB Ride-Thru function with one drive, set L2-29 = 0, 1 [Single Drive KEB Ride-Thru 1, Single
Drive KEB Ride-Thru 2].
If deceleration in coordination with more than one drive is necessary, for example textile machinery line systems, set
L2-29 = 2, 3 [System KEB Ride-Thru 1, System KEB Ride-Thru 2].
YASKAWA TOEPYAIGA8002B GA800 Drive Programming
V/f CL-V/f OLV CLV AOLV
Sets the reference current for the motor 2 thermal overload detection. When the current level > 0.0 A,
you cannot set this value < 10% of drive rated current.
V/f CL-V/f OLV CLV AOLV
Sets the function that keeps the current electronic thermal protector value when the drive stops
receiving power.
Description
OLV/PM AOLV/PM CLV/PM EZOLV OLV/PM
Description
OLV/PM AOLV/PM CLV/PM EZOLV OLV/PM
2.9 L: Protection Functions
Default
(Range)
0.0 A
(0.0 A or 10 to150% of the
drive rated current)
Default
(Range)
1
(0, 1)
2
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