5.8 L: Protection Functions
320 YASKAWA ELECTRIC SIEP C710636 02B YASKAWA U1000 Technical Manual
■ L8-93: LSo Detection Time at Low Speed
Sets the amount of time until baseblock is executed once LSo has been detected at low speed. A setting of 0.0 s
essentially disables this parameters.
■
L8-94: LSo Detection Level at Low Speed
Determines the detection level of LSo at low speed. Set as a percentage of the maximum frequency (E1-04).
■
L8-95: Average LSo Frequency at Low Speed
Sets the average number of times LSo can occur at low speed.
◆ L9: Drive Protection 2
■ L9-03: Carrier Frequency Reduction Level Selection
There is normally no need to change this parameter from the default value.
Selects which current level is used for the automatic carrier frequency reduction function.
Setting 0: Rated Current Reduces the carrier frequency based on the drive rated current.
Setting 1: Derated Current Reduces the carrier frequency based on the drive current after derating due to
temperature or carrier frequency setting (C6-02).
■ L9-12: SoH Alarm Selection during bb
There is normally no need to change this parameter from the default value.
Sets the SoH (Snubber Discharge Resistor Overheat) alarm to output a fault or a minor fault during a baseblock (bb).
Note: This parameter is available in the drive software versions S1015 and later.
Setting 0: Outputs a fault for an SoH alarm during a baseblock (bb).
Setting 1: Outputs a minor fault for an SoH alarm during a baseblock (bb).
No. Name Setting Range Default
L8-93 LSo Detection Time at Low Speed 0.0 to 10.0 s 1.0 s
No. Name Setting Range Default
L8-94 LSo Detection Level at Low Speed 0 to 10% 3%
No. Name Setting Range Default
L8-95 Average LSo Frequency at Low Speed 1 to 50 times 10 times
No. Name Setting Range Default
L9-03 Carrier Frequency Reduction Level Selection 0, 1 0
No. Name Setting Range Default
L9-12 SoH Alarm Selection during bb 0, 1 0
SIEP_C710636_02B_1_0.book 320 ページ ２０１５年１１月２５日 水曜日 午後４時５６分
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