User Constant Tables
5-
37
Protection Function Constants: L
The following settings are made with the protection function constants (L constants): Motor selection func-
tion, power loss ridethrough function, stall prevention function, speed detection, torque detection, torque lim-
its, and hardware protection.
Motor Overload: L1
User constants for motor overloads are shown in the following table.
Constant
Number
Name
Description
Setting
Range
Factory
Setting
Change
during
Operation
Control
Methods
MEMOBUS
Register
Open-
loop
Vector
Flux
Vector
Display
L1-01
Motor protection
selection
Sets whether the motor over-
load function is enabled or dis-
abled at electric thermal
overload relay.
0: Disabled
1: Enabled
0 or 1
1
No
A
A
4E0H
MOL Fault Select
L1-02
Motor protection time
constant
Sets protection time when over-
load of the motor overload
detection level (L1-07) is
applied to the load status that
was lower than the motor over-
load detection start level (L1-
06).
The factory setting is 60.0 sec-
ound.
When the motor's overload
resistance is known, also set the
overload resistance protection
time for when the motor is hot
started.
1.0 to
300.0
60.0 s
No
A
A
4E1H
MOL Time Const
L1-04
Motor overheating
operation selection
Select the operation when the
motor temperature (electric
thermal) exceeds the operation
detection level.
0: Decelerate to stop
1: Coast to stop
2: Emergency stop using the
deceleration time in C1-09.
3: Continue operation
0 to 3
1
No
A
A
4E3H
MOL Select
L1-06
Motor overload
detection start level
Sets the motor overload detec-
tion start level.
The set value must be smaller
than L1-07.
20 to
300
110%
No
A
A
4E5H
OL1 Start Level
L1-07
Motor overload
detection level
Sets the motor overload detec-
tion level.
The set value must be bigger
than L1-06.
30 to
300
150%
No
A
A
4E6H
OL1 Level
