L2: Momentary Power Loss Ride-Thru - YASKAWA A1000 Technical Manual

No.
(Addr. Name
Hex)
L1-20 Operation at Motor Overheat
(445) (oH5)
<1> Default setting is determined by parameter A1-02, Control Method Selection.
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L2: Momentary Power Loss Ride-Thru

No.
(Addr. Name
Hex)
L2-01 Momentary Power Loss
(485) Operation Selection
L2-02 Momentary Power Loss
(486) Ride-Thru Time
L2-03 Momentary Power Loss
(487) Minimum Baseblock Time
Momentary Power Loss
L2-04
Voltage Recovery Ramp
(488)
Time
L2-05 Undervoltage Detection
(489) Level (Uv1)
L2-06
KEB Deceleration Time
(48A)
L2-07
KEB Acceleration Time
(48B)
L2-08 Frequency Gain at KEB
(48C) Start
L2-10 KEB Detection Time
(48E) (Minimum KEB Time)
L2-11 DC Bus Voltage Setpoint
(461) during KEB
L2-29
KEB Method Selection
(475)
<1> Default setting is dependent on parameters C6-01, Drive Duty Selection, and o2-04, Drive Model Selection.
<2> Default setting is dependent on parameter E1-01, Input voltage Setting.
<3> Values shown are specific to 200 V class drives. Double the value for 400 V class drives. Multiply the value by 2.875 for 600 V class drives.
<4> Setting range value is dependent on parameter C1-10, Accel/Decel Time Setting Units. When C1-10 = 0 (units of 0.01 seconds), the setting range
becomes 0.00 to 600.00 seconds.
YASKAWA ELECTRIC TOEP C710616 41B YASKAWA AC Drive - A1000 Quick Start Guide
Description
Determines drive response when a motor overheat fault (oH5) occurs.
0: Ramp to stop
1: Coast to stop
2: Fast Stop (decelerate to stop using the deceleration time set to C1-09)
3: Alarm only ("oH5" will flash)
Note: This parameter is only available in models CIMR-Ao4A0930 and
4A1200.
Description
0: Disabled. Drive trips on Uv1 fault when power is lost.
1: Recover within the time set in L2-02. Uv1 will be detected if power loss is
longer than L2-02.
2: Recover as long as CPU has power. Uv1 is not detected.
3: KEB deceleration for the time set to L2-02.
4: KEB deceleration as long as CPU has power.
5: KEB deceleration to stop.
Sets the Power Loss Ride-Thru time. Enabled only when L2-01 = 1 or 3.
Sets the minimum wait time for residual motor voltage decay before the drive
output reenergizes after performing Power Loss Ride-Thru.
Increasing the time set to L2-03 may help if overcurrent or overvoltage occur
during Speed Search or during DC Injection Braking.
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.
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 is used.
Sets the percentage of output frequency reduction at the beginning of
deceleration when the KEB Ride-Thru function is started.
Reduction = (slip frequency before KEB) × L2-08 × 2
Sets the time to perform KEB Ride-Thru.
Sets the desired value of the DC bus voltage during KEB Ride-Thru.
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
B.8 L: Protection Function
Values Page
Default: 1
Range: 0 to 3
Values Page
Default: 0
Range: 0 to 5
<1>
Default:
Min.: 0.0 s
Max.: 25.5 s
<1>
Default:
Min.: 0.1 s
Max.: 5.0 s
<1>
Default:
Min.: 0.0 s
Max.: 5.0 s
Default: 190 Vdc
<2> <3>
Min.: 150 Vdc
<3>
Max.: 210 Vdc
Default: 0.00 s
Min.: 0.00
<4>
Max.: 6000.0
Default: 0.00 s
Min.: 0.00
<4>
Max.: 6000.0
Default: 100%
Min.: 0
Max.: 300
Default: 50 ms
Min.: 0
Max.: 2000
<2>
Default:
[E1-01] × 1.22
Min.: 150 Vdc
<5>
Max.: 400 Vdc
Default: 0
Range: 0 to 3
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