L: Protection Function; L1: Motor Protection; L2: Momentary Power Loss Ride-Thru - YASKAWA Z1000 User Manual

B.8 L: Protection Function
B.8 L: Protection Function
L parameters provide protection to the drive and motor, including control during momentary power loss, stall prevention,
frequency detection, fault restarts, overtorque and undertorque detection, and other types of hardware protection.
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L1: Motor Protection

No.
(Addr. Name
Hex)
L1-01 Motor Overload
(480) Protection Selection
L1-02 Motor Overload
(481) Protection Time
Motor Overheat Alarm
L1-03 Operation Selection
(482) (PTC input)
Motor Overheat Fault
L1-04 Operation Selection
(483) (PTC input)
Motor Temperature
L1-05
Input Filter Time (PTC
(484)
input)
L1-08
oL1 Current Level
(1103)
Continuous
L1-13
Electrothermal
(46D)
Operation Selection
<1> Default setting is determined by parameter A1-02, Control Method Selection.
<2> Default setting is determined by parameters o2-04, Drive Model Selection, and C6-01, Drive Duty Selection.
<3> Display is in the following units: 5A0007 to 5A0017: 0.01 A units; 5A0022 to 5A0242: 0.1 A units.
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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
298
LCD Display
0: Disabled
Mtr OL Charact 1: General purpose motor (standard fan cooled)
0: OL1 Disabled 4: PM motor with variable torque
1: VT Motor The drive may not be able to provide protection when using
4: PM Motor multiple motors, even if overload is enabled in L1-01. Set L1-01
to 0 and install separate thermal relays to each motor.
Sets the motor thermal overload protection (oL1) time.
MOL Time Const
Sets operation when the motor temperature analog input
Mtr OH Alarm Sel (H3-02 or H3-10 = E) exceeds the alarm level.
0 : Ramp to Stop 0: Ramp to stop
1: Coast to Stop 1: Coast to stop
2: Fast-Stop 2: Fast Stop (decelerate to stop using the deceleration time in
3: Alarm only C1-09)
3: Alarm only ("oH3" will flash)
Sets stopping method when the motor temperature analog input
Mtr OH Fault Sel (H3-02, or H3-10 = E) exceeds the oH4 fault level.
0 : Ramp to Stop 0: Ramp to stop
1: Coast to Stop 1: Coast to stop
2: Fast-Stop 2: Fast Stop (decelerate to stop using the deceleration time in
C1-09)
Adjusts the filter for the motor temperature analog input
Mtr Temp Filter (H3-02, or H3-10 = E).
Sets the reference current for motor thermal overload detection
oL1 Current Lvl
for the motor in amperes.
Mtr OL Mem Sel 0: Disabled
0: Disabled 1: Enabled
1: Enabled 2: Enable using Real Time Clock
2: Enabled(RTC)
LCD Display
0: Disabled.
PwrL Selection Drive trips on Uv1 fault when power is lost.
0: Disabled 1: Recover within the time set in L2-02.
1: Enbl with Timer Uv1 will be detected if power loss is longer than L2-02.
2: Enbl whl CPU act 2: Recover as long as CPU has power.
Uv1 is not detected.
Sets the Power Loss Ride-Thru time. Enabled only when
L2-01 = 1 or 3.
PwrL Ridethru t
Description
Description
YASKAWA TOEP YAIZ1U 03B YASKAWA AC Drive – Z1000 User Manual
Values Page
<1>
Default:
–
Range: 0, 1, 4
Default: 1.0 min
Min.: 1.0 –
Max.: 5.0
Default: 3
–
Range: 0 to 3
Default: 1
–
Range: 0 to 2
Default: 0.20 s
Min.: 0.00 –
Max.: 10.00
<2>
Default:
Min.: 10% of
drive rated
current –
Max.: 150% of
drive rated
<3>
current
Default: 1
–
Range: 0 to 2
Values Page
Default: 2
131
Range: 0 to 2
<1>
Default:
131
Min.: 0.0 s
Max.: 25.5 s