Yaskawa Matrix Converter - Manual (Page 143)

Parameter Tables
5-
43
‹ L: Protection Function
The following settings are made with the protection function parameters (L parameters): Motor selection func-
tion, power loss ridethrough function, stall prevention function, frequency detection, torque limits, and hard-
ware protection.
„ L1: Motor Overload
Parameter
Number
Name
Description Setting
Range
Default
Change
during
Run
Control
Methods MEMO-
BUS
Register
Page
Display V/f
Open
Loop
Vector
Flux
Vector
L1-01
Motor Overload
Protection Selec-
tion Sets the motor thermal overload protec-
tion (OL1) based on the cooling capacity
of the motor.
0: Disabled.
1: Standard Fan Cooled (< 10:1 motor)
2: Standard Blower Cooled (10:1 motor)
3: Vector Motor (
≤1000:1 motor)
0 to 3 1 No Q Q Q 480H
4-5
6-51
MOL Fault Select
L1-02
Motor Overload
Protection Time Sets the motor thermal overload protec-
tion (OL1) time. A larger L1-02 time will
increase the time before an OL1 fault will
occur.
0.1 to
5.0
1.0
min
No A A A 481H 6-51
MOL Time Const
L1-03
Motor Overheat
Alarm Operation
Selection Sets operation selection when the motor
temperature analog input (H3-09 = E)
exceeds the OH3 alarm level (1.17V)
0: Decelerate to Stop
1: Coast to Stop
2: Fast-Stop
3: Alarm Only
0 to 3 3 No A A A 482H 6-54
Mtr OH Alarm
Sel
L1-04
Motor Overheat
Fault Operation
Selection Sets stopping method when the motor
temperature analog input
(H3-09 = E) exceeds the OH4 fault level.
0: Decelerate to Stop
1: Coast to Stop
2: Fast-Stop
0 to 2 1 No A A A 483H 6-54
Mtr OH Fault Sel
L1-05
Motor Tempera-
ture Input Filter
Time
This parameter adjusts the filter on the
motor temperature analog input (H3-09 =
E). Increase to add stability, decrease to
improve response.
0.00 to
10.00
0.20 s No A A A 484H 6-54
Mtr Temp Filter