YASKAWA A1000 Technical Manual page 495

No. (Addr.) Name
L1-20 Operation at Motor Overheat
(445H) (oH5)
<9> Default setting is determined by the drive model (o2-04) and duty selection (C6-01).
<10> Default setting is determined by the control mode (A1-02).
<19> Display is in the following units.
 CIMR-A2A0004 to 2A0040, CIMR-A4A0002 to 4A0023: 0.01 A units
 CIMR-A2A0056 to 2A0312, CIMR-A4A0031 to 4A0675: 0.1 A units

L2: Momentary Power Loss Ride-Thru
No. (Addr.) Name
L2-01 Momentary Power Loss Operation
(485H) Selection
L2-02 Momentary Power Loss Ride-Thru
(486H) Time
L2-03 Momentary Power Loss Minimum
(487H) Baseblock Time
L2-04 Momentary Power Loss Voltage
(488H) Recovery Ramp Time
L2-05 Undervoltage Detection Level
(489H) (Uv)
L2-06
KEB Deceleration Time
(48AH)
L2-07
KEB Acceleration Time
(48BH)
L2-08
Frequency Gain at KEB Start
(48CH)
L2-10 KEB Detection Time (Minimum
(48EH) KEB Time)
L2-11 DC Bus Voltage Setpoint during
(461H) KEB
L2-29
KEB Method Selection
(475H)
<9> Default setting is determined by the drive model (o2-04) and duty selection (C6-01).
<12> Setting range value is dependent on the units selected for the accel/decel time (C1-10). When C1-10 = 0 (units of 0.01 s), the setting range
becomes 0.00 to 600.00 s.
<18> Values shown here are for 200 V class drives. Double the value when using a 400 V class drive.
<33> Default setting value is dependent on the setting for the input voltage (E1-01).
YASKAWA ELECTRIC SIEP C710616 27G YASKAWA AC Drive A1000 Technical Manual
All Modes
Determines what action the drive should take when a motor overheat fault occurs (oH5).
0: Ramp to stop
1: Coast to stop
2: Fast Stop (decelerate to stop using the deceleration time in C1-09)
3: Alarm only ("oH5" will flash)
Note: This parameter is available in models CIMR-A4A0930 and 4A1200.
All Modes
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.
All Modes
Sets the Power Loss Ride-Thru time. Enabled only when L2-01 = 1 or 3.
All Modes
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.
V/f V/f w/PG
OLV/PM AOLV/PM
Sets the time for the output voltage to return to the preset V/f pattern during Speed Search.
All Modes
Sets the DC bus undervoltage trip level.
All Modes
Sets the time required to decelerate from the speed when KEB was activated to zero speed.
All Modes
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.
V/f V/f w/PG
OLV/PM AOLV/PM
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)  L2-08/100  2
All Modes
Sets the time to perform KEB Ride-Thru.
All Modes
Sets the desired value of the DC bus voltage during KEB Ride-Thru.
All Modes
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
Description
OLV
CLV
CLV/PM
OLV CLV
CLV/PM
B.3 Parameter Table
Setting Page
Default: 1
Min: 0 274
Max: 3
Setting Page
Default: 0
Min: 0 274
Max: 5

Default:
<9>
Min: 0.0 s 279
Max: 25.5 s

Default:
<9>
Min: 0.1 s 279
Max: 5.0 s

Default:
<9>
Min: 0.0 s 279
Max: 5.0 s
Default:
<18> <33>
Min: 150 Vdc 280
Max: 210 Vdc
<18>
Default: 0.00 s
Min: 0.00 s 280
Max: 6000.0 s
<12>
Default: 0.00 s
Min: 0.00 s 280
Max: 6000.0 s
<12>
Default: 100%
Min: 0% 280
Max: 300%
Default: 50 ms
Min: 0 ms 280
Max: 2000 ms
Default:
<18> <33>
Min: 150 Vdc 280
Max: 400 Vdc
<18>
Default: 0
Min: 0 281
Max: 3
495
B