YASKAWA P1000 Technical Manual page 263

• When using the drive in common DC bus applications and the internal braking unit is not installed.
Enabling L8-55 under such conditions can incorrectly trigger a braking resistor fault (rF).
Setting 1: Enabled
Enable L8-55 when connecting a braking resistor or a braking resistor unit to the drive built-in braking transistor.
Models 2A0004 to 2A0138, 4A0002 to 4A0072, and 5A0003 to 5A0052 come with a built-in braking transistor.
n L8-78: Power Unit Output Phase Loss Protection
Protects the power unit from phase loss.
Note: This parameter is only available in models 4A0930 and 4A1200.
No.
L8-78
Setting 0: Disabled
Setting 1: Enabled
n L8-93: LSo Detection Time at Low Speed
Sets the amount of time until baseblock is executed after LSo has been detected at low speed.
A setting of 0.0 s disables this parameter.
No.
L8-93
n L8-94: LSo Detection Level at Low Speed
Determines the detection level of STo at low speed. Set as a percentage of the maximum frequency (E1-04).
No.
L8-94
n
L8-95: Average LSo Frequency at Low Speed
Sets the average number of times LSo can occur at low speed.
No.
L8-95
YASKAWA SIEP YAIP1U 01C AC Drive - P1000 Technical Manual
Name
Power Unit Output Phase Loss Protection
Name
LSo Detection Time at Low Speed
Name
LSo Detection Level at Low Speed
Name
Average LSo Frequency at Low Speed
5.8 L: Protection Functions
Setting Range
0, 1
Setting Range
0.0 to 10.0 s
Setting Range
0 to 10%
Setting Range
1 to 50 times
Default
1
Default
1.0 s
Default
3%
Default
10 times
5
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