L: Protection Function; L: Protection Function; L1: Motor Protection - YASKAWA A1000 Series Quick Start Manual

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.
u

L1: Motor Protection

No.
(Addr. Name
Hex)
L1-01 Motor Overload
(0480) Protection Selection
L1-02 Motor Overload
(0481) Protection Time
Motor Overheat Alarm
L1-03 Operation Selection
(0482) (PTC input)
Motor Overheat Fault
L1-04 Operation Selection
(0483) (PTC input)
Motor Temperature
L1-05
Input Filter Time (PTC
(0484)
input)
L1-08
(1103)
oL1 Current Level
<2>
L1-09
oL1 Current Level for
(1104)
Motor 2
<2>
Continuous
L1-13
Electrothermal
(046D)
Operation Selection
L1-15 Motor 1 Thermistor
(0440) Selection (NTC)
L1-16 Motor 1 Overheat
(0441) Temperature
YASKAWA ELECTRIC TOEP C710616 41G YASKAWA AC Drive - A1000 Quick Start Guide
LCD Display
0: Disabled
Mtr OL Charact 1: General purpose motor (standard fan cooled)
0: OL1 Disabled 2: Drive dedicated motor with a speed range of 1:10
1: VT Motor 3: Vector motor with a speed range of 1:100
2: CT Motor 4: PM motor with variable torque
3: Vector Motor 5: PM motor with constant torque control
4: PM Motor 6: General purpose motor (50 Hz)
5: Constant Torque The drive may not be able to provide protection when using
6: 50Hz VT 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, H3-10, or H3-06 = E) exceeds the oH3 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, H3-10, or H3-06 = 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, H3-10, or H3-06 = E).
Sets the reference current for motor thermal overload detection
for motor 1 in amperes.
Note:
OL1 current lvl1
Sets the reference current for motor thermal overload detection
for motor 2 in amperes.
Note:
OL1 current lvl2
Mtr OL Mem Sel 0: Disabled
0: Disabled 1: Enabled
1: Enabled
0: Disabled
1: Enabled
M1 OH5 Fault Sel
Note:
Sets the temperature for motor 1 that triggers an overheat fault
(oH5).
M1 OH5 level
Note:
Description
This parameter is not available in models
4A0930 and 4A1200.
This parameter is not available in models
4A0930 and 4A1200.
This parameter is only available in models
4A0930 and 4A1200.
This parameter is only available in models
4A0930 and 4A1200.
B.8 L: Protection Function
Values Page
<1>
Default:
Range: 0 to 6
Default: 1.0 min
Min.: 0.1
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
Default: 0.0 A
Min.: 10% of
drive rated
current
Max.: 150% of
drive rated
<3>
current
Default: 0.0 A
Min.: 10% of
drive rated
current
Max.: 150% of
drive rated
<3>
current
Default: 1
Range: 0, 1
Default: 0
Range: 0, 1
Default: 120 °C
Min.: 50
Max.: 200
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