YASKAWA CIMR-VU BA0001 Technical Manual page 237

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.
L8-09
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.
L8-10
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.
L8-11
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.
L8-12
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.
L8-15
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.
YASKAWA ELECTRIC SIEP C710606 18F YASKAWA AC Drive – V1000 Technical Manual
Name
Output Ground Fault Detection
Name
Fan Operation Selection
Name
Cooling Fan Switch Off Delay
Name
Ambient Temperature Setting
Name
oL2 Characteristics at Low Speed
5.8 L: Protection Functions
Setting Range
0 or 1
Setting Range
0 or 1
Setting Range
0 to 300 s
Setting Range
-10 to +50 °C
Setting Range
0 or 1
Default
1
Default
0
Default
60 s
Default
40 °C
5
Default
1
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