A.10 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 detection, torque limits, and other types of hardware protection.
u
L1: Motor Protection
No.
(Addr.
Hex)
Name Description Values Page
L1-01
(480)
Motor Overload Protection
Selection
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 using multiple motors,
even if overload is enabled in L1-01. Set L1-01 to 0 and install separate thermal
relays to each motor.
Default:
<1>
Range: 0 to 6
128
L1-02
(481)
Motor Overload Protection
Time
All Modes
Sets the motor thermal overload protection (oL1) time.
Default: 1.0 min
Min.: 0.1
Max.: 5.0
130
L1-03
(482)
Motor Overheat Alarm
Operation Selection
(PTC input)
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)
Default: 3
Range: 0 to 3
131
L1-04
(483)
Motor Overheat Fault
Operation Selection
(PTC input)
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)
Default: 1
Range: 0 to 2
131
L1-05
(484)
Motor Temperature Input
Filter Time (PTC input)
All Modes
Adjusts the filter for the motor temperature analog input (H3-02, H3-06, or
H3-10 = E).
Default: 0.20 s
Min.: 0.00
Max.: 10.00
132
L1-13
(46D)
Continuous Electrothermal
Operation Selection
All Modes
0: Disabled
1: Enabled
Default: 1
Range: 0, 1
132
L1-15
(440)
Motor 1 Thermistor
Selection (NTC)
All Modes
Sets the input selection for Motor #1 Thermistor.
0: Disabled
1: Thermistor input by Analog Input
2: Thermistor input by special Thermistor Input
Default: 0
Range: 0 to 2
133
L1-16
(441)
Motor 1 Overheat
Temperature
All Modes
Sets the range of the Motor #1 oH5 trip level.
Default: 120 °C
Min.: 50
Max.: 200
133
L1-17
(442)
Motor 2 Thermistor
Selection (NTC)
All Modes
Sets the input selection for Motor #2 Thermistor.
0: Disabled
1: Thermistor input by Analog Input
2: Thermistor input by special Thermistor Input
Default: 0
Range: 0 to 2
133
L1-18
(443)
Motor 2 Overheat
Temperature
All Modes
Sets the range of the Motor #2 oH5 trip level.
Default: 120 °C
Min.: 50
Max.: 200
133
A.10 L: Protection Function
282
YASKAWA ELECTRIC SIEP YEAHHP 01B YASKAWA AC Drive – A1000 HHP Programming Manual
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