Setting 1: Fault when One Phase is Lost
An output phase loss fault (LF) is triggered when one output phase is lost. The output shuts off and the motor coasts to
stop.
Setting 2: Fault when Two Phases are Lost
An output phase loss fault (LF) is triggered when two output phases are lost. The output shuts off and the motor coasts to
stop.
n
L8-09: Output Ground Fault Detection Selection
Enables or disables the output ground fault detection.
No.
Name
Setting Range
Default
L8-09
Output Ground Fault Detection
0 or 1
1
Setting 0: Disabled
Ground faults are not detected.
Setting 1: Enabled
A ground fault (GF) is triggered when high leakage current or a ground short circuit occurs in one or two output phases.
n
L8-10: Heatsink Cooling Fan Operation Selection
Selects the heatsink cooling fan operation.
No.
Name
Setting Range
Default
L8-10
Fan Operation Selection
0 or 1
0
Setting 0: Run with Timer
The fan is switched on when a Run command is active. It is switched off with the delay set in parameter L8-11 after the
Run command has been released. Using this setting extends the fan lifetime.
Setting 1: Run always
The fan runs whenever power is supplied to the drive.
n
L8-11: Heatsink Cooling Fan Off Delay Time
Sets the cooling fan switch off delay time if parameter L8-10 is set to 0.
No.
Name
Setting Range
Default
L8-11
Cooling Fan Switch Off Delay
0 to 300 s
60 s
n
L8-12: Ambient Temperature Setting
If the temperature where the drive is mounted is above the specified values, the drive rated current must be reduced for
optimal performance life. By setting the ambient temperature to parameter L8-12 and adjusting the installation method
setting in L8-35, the drive rating automatically adapts to safe values.
No.
Name
Setting Range
Default
L8-12
Ambient Temperature Setting
-10 to +50 °C
40 °C
n
L8-15: oL2 Characteristics Selection at Low Speeds
Selects whether the drive overload capability (oL fault detection level) is reduced at low speeds in order to prevent
premature output transistor failures.
No.
Name
Setting Range
Default
L8-15
oL2 Characteristics at Low Speed
0 or 1
1
Setting 0: Disabled
The overload protection level is not reduced. Frequently operating the drive with high output current at low speed can lead
to premature drive faults.
Setting 1: Enabled
The overload protection level (oL2 fault detection level) is automatically reduced at speeds below 6 Hz.
n
L8-18: Software CLA Selection
The Software Current Limit (CLA) is a drive protection function that prevents output transistor failures caused by high
current. Parameter L8-18 enables or disables this function.
Note:
This setting should not be changed unless absolutely necessary. For proper drive protection and operation leave the Software CLA function
enabled.
5.8 L: Protection Functions
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Parameter Details
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