YASKAWA L1000A Technical Manual page 213

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L8-07: Output Phase Loss Protection
Enables or disables the output phase loss detection, which is triggered when the output current falls below 5% of the drive
rated current.
Note: 1. Output phase loss detection can mistakenly be triggered if the motor rated current is very small compared to the drive rating. Disable
this parameter in such cases.
2. Output phase loss detection is not possible when the drive is running a PM motor with light load.
No.
L8-07
Setting 0: Disabled
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.
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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.
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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 Up/Down command is active. It is switched off with the delay set in parameter L8-11 after
the Up/Down 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.
Setting 2: Temperature controlled
Cooling fan operated depending on the temperature of the drives heatsink.
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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
YASKAWA ELECTRIC SIEP C710616 38A YASKAWA AC Drive L1000A Technical Manual
Name
Output Phase Loss Protection
Name
Output Ground Fault Detection Selection
Name
Heatsink Cooling Fan Operation Selection
Name
Heatsink Cooling Fan Off Delay Time
5.8 L: Protection Functions
Setting Range Default
0 to 2
Setting Range Default
0 or 1
Setting Range Default
0 to 2
Setting Range Default
0 to 300 s
0
1
0
5
60 s
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