YASKAWA A1000

B.3 Parameter Table
494 YASKAWA ELECTRIC SIEP C710616 27G YASKAWA AC Drive A1000 Technical Manual
 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 and undertorque detection, torque limits, and other types of hardware
protection.

L1: Motor Protection
No. (Addr.) Name Description Setting Page
L1-01
(480H)
Motor Overload Protection
Selection
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.
Default:
<10>
Min: 0
Max: 6
267
L1-02
(481H)
Motor Overload Protection Time
Sets the motor thermal overload protection (oL1) time.
Default: 1.0 min
Min: 0.1 min
Max: 5.0 min
269
L1-03
(482H)
Motor Overheat Alarm Operation
Selection (PTC input)
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
Min: 0
Max: 3
271
L1-04
(483H)
Motor Overheat Fault Operation
Selection (PTC input)
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
Min: 0
Max: 2
271
L1-05
(484H)
Motor Temperature Input Filter
Time (PTC input)
Adjusts the filter for the motor temperature analog input (H3-02, H3-06, or H3-10 = E).
Default: 0.20 s
Min: 0.00 s
Max: 10.00 s
271
L1-08
(1103H)
OL1 Current Lvl
Sets the reference current for motor thermal overload detection for motor 1 in amperes.
Note: This parameter is not available in models CIMR-A4A0930 and 4A1200.
Default: 0.0 A
Min: 0.0 A or 10% of
drive rated current
Max: 150% of drive
rated current
<19>
271
L1-09
(1104H)
OL1 Current Lvl (for 2nd motor)
Sets the reference current for motor thermal overload detection for motor 2 in amperes.
Note: This parameter is not available in models CIMR-A4A0930 and 4A1200.
Default: 0.0 A
Min: 0.0 A or 10% of
drive rated current
Max: 150% of drive
rated current
<19>
272
L1-13
(46DH)
Continuous Electrothermal
Operation Selection 0: Disabled
1: Enabled
Default: 1
Min: 0
Max: 1
272
L1-15
(440H)
Motor 1 Thermistor Selection
(NTC)
0: Disabled
1: Enabled
Note: This parameter is available in models CIMR-A4A0930 and 4A1200.
Default: 0
Min: 0
Max: 1
273
L1-16
(441H)
Motor 1 Overheat Temperature
Sets the temperature for motor 1 that triggers an overheat fault (oH5).
Note: This parameter is available in models CIMR-A4A0930 and 4A1200.
Default: 120
Min: 50
Max: 200
273
L1-17
(442H)
Motor 2 Thermistor Selection
(NTC)
0: Disabled
1: Enabled
Note: This parameter is available in models CIMR-A4A0930 and 4A1200.
Default: 0
Min: 0
Max: 1
273
L1-18
(443H)
Motor 2 Overheat Temperature
Sets the temperature for motor 2 that triggers an overheat fault (oH5).
Note: This parameter is available in models CIMR-A4A0930 and 4A1200.
Default: 120
Min: 50
Max: 200
273
L1-19
(444H)
Operation at Thermistor
Disconnect (THo) (NTC)
Determines what action the drive should take when a thermistor disconnect fault occurs (Tho).
0: Ramp to stop
1: Coast to stop
2: Fast Stop (decelerate to stop using the deceleration time in C1-09)
3: Alarm only ("THo" will flash)
Note: This parameter is available in models CIMR-A4A0930 and 4A1200.
Default: 3
Min: 0
Max: 3
273
All Modes
All Modes
All Modes
All Modes
All Modes
All Modes
OLV/PM AOLV/PM
CLV
V/f w/PG
CLV/PM
V/f OLV
All Modes
All Modes
All Modes
All Modes
All Modes
All Modes