L: Protection Function - YASKAWA A1000 Series Technical Manual

B.3 Parameter Table

◆ L: Protection Function

L parameters provide protection to the drive and motor, such as: control during momentary power loss, Stall Prevention,
frequency detection, fault restarts, overtorque detection, torque limits, and other types of hardware protection.
L1: Motor Protection
■
No. (Addr.) Name
L1-01 Motor Overload Protection
(480H) Selection
L1-02
Motor Overload Protection Time
(481H)
L1-03 Motor Overheat Alarm Operation
(482H) Selection (PTC input)
L1-04 Motor Overheat Fault Operation
(483H) Selection (PTC input)
L1-05 Motor Temperature Input Filter
(484H) Time (PTC input)
L1-13 Continuous Electrothermal
(46DH) Operation Selection
<10> Default setting is determined by the control mode (A1-02).
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)
434
All Modes
0: Disabled
1: General purpose motor (standard fan cooled)
2: Drive dedicated motor with a speed range of 1:10
3: Vector motor with a speed range of 1:100
4: PM motor with variable torque
5: PM motor with constant torque control
6: General purpose motor (50 Hz)
The drive may not be able to provide protection when multiple motors are used, even if
overload is enabled in L1-01. Set L1-01 to 0 and install separate thermal relay to each motor.
All Modes
Sets the motor thermal overload protection (oL1) time.
All Modes
Sets operation when the motor temperature analog input (H3-02, H3-06, or H3-10 = E) exceeds
the oH3 alarm level.
0: Ramp to stop
1: Coast to stop
2: Fast Stop (decelerate to stop using the deceleration time in C1-09)
3: Alarm only ("oH3" will flash)
All Modes
Sets stopping method when the motor temperature analog input (H3-02, H3-06, or H3-10 = E)
exceeds the oH4 fault level.
0: Ramp to stop
1: Coast to stop
2: Fast Stop (decelerate to stop using the deceleration time in C1-09)
All Modes
Adjusts the filter for the motor temperature analog input (H3-02, H3-06, or H3-10 = E).
All Modes
0: Disabled
1: Enabled
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 is used.
YASKAWA ELECTRIC SIEP C710616 27C YASKAWA AC Drive A1000 Technical Manual
Description
Description
OLV
CLV
CLV/PM
Setting
common_
TMonly
Default:
<10>
Min: 0
Max: 6
Default: 1.0 min
common_
TMonly
Min: 0.1 min
Max: 5.0 min
common_
TMonly
Default: 3
Min: 0
Max: 3
common_
TMonly
Default: 1
Min: 0
Max: 2
Default: 0.20 s
common_
TMonly Min: 0.00 s
Max: 10.00 s
common_
Default: 1
TMonly
Min: 0
Max: 1
Setting
common_
TMonly
Default: 0
Min: 0
Max: 5
Default:
<9>
common_
TMonly
Min: 0.0 s
Max: 25.5 s
common_
TMonly
Default:
<9>
Min: 0.1 s
Max: 5.0 s
Default:
<9>
common_
TMonly Min: 0.0 s
Max: 5.0 s
Default:
<18> <33>
common_
TMonly Min: 150 Vdc
Max: 210 Vdc
<18>
Default: 0.00 s
common_
TMonly Min: 0.00 s
Max: 6000.0 s
<12>
common_
Default: 0.00 s
TMonly
Min: 0.00 s
Max: 6000.0 s
<12>
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