L2: Momentary Power Loss Ride-Thru - YASKAWA GA700 Technical Manual

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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, E4-01 [Motor 2 Rated Current] is used as the reference for motor overload protection.
When L1-09 ≠ 0.0 A, the motor overload protection is detected on the basis of the set value.
Note:
• Display is in the following units:
–2004 to 2042, 4002 to 4023: 0.01 A units
–2056 to 2415, 4031 to 4675: 0.1 A units
• Cannot be set to a value smaller than 10% of drive rated current when the current level is set to a value greater than 0.0 A.
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L1-13: Cont Electrothermal Ope Select
No.
Name
(Hex.)
L1-13 Cont Electrothermal
Ope Select
(046D)
0 : Disabled
1 : Enabled
Selects if the calculation of the motor overload is restarted when the drive is energized again.
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L2: Momentary Power Loss Ride-Thru

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. The drive quickly decelerates the motor when the drive detects a
power loss or momentary power loss. The drive uses regenerative energy generated from the motor to keep the
main circuit operating. Operation returns to the state before the power loss if power is restored during motor
deceleration. The KEB Ride-Thru function differs from other functions for continuous operation. The motor will
ramp to stop (not coast to stop) when the drive detects momentary power loss. This function is suitable for
applications in which it is desirable to prevent materials from running out, such as control for film and fiber lines.
The KEB Ride-Thru function has 4 methods of operation. Select the method in L2-29 [KEB Method Selection].
When using 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 multiple drives is required, such as with textile machinery line systems, set
L2-29 = 2, 3 [System KEB Ride-Thru 1, System KEB Ride-Thru 2].
YASKAWA ELECTRIC SIEP C710617 01B YASKAWA AC Drive GA700 Technical Manual
V/f CL-V/f OLV CLV AOLV
Sets the current value used as the reference for detecting the motor overload
state regarding the motor 2 electronic thermal protector.
V/f CL-V/f OLV CLV AOLV
Selects whether to retain the current electronic thermal protector value when
the power supply is interrupted.
Description
OLV/PM AOLV/PM CLV/PM EZOLV OLV/PM
Description
OLV/PM AOLV/PM CLV/PM EZOLV OLV/PM
11.9 L: Protection Function
Default Setting
(Range)
0.0 A
(0.0 A or 10 to150%
of the drive rated
current)
Default
(Range)
1
(0, 1)
11
833