Parameter Details
12
12.7 L: Protection Functions
YASKAWA SIEPYEULA5001C LA500 Technical Manual 343
The overload protection detection level for the drive is automatically adjusted to the optimal value in accordance
with the setting value. Refer to Derating Depending on Ambient Temperature on page 228 for information about
derating as specified by ambient temperature.
0 : IP20/UL Open Type
Use this setting to install IP20/UL Open Type drives.
Make sure that there is 30 mm (1.18 in) minimum of space between drives or between the drive and side of the
enclosure panel.
1 : Side-by-Side Mounting
Use this setting to install more than one drive side-by-side.
2 : IP20/UL Type 1
Use this setting to install IP20/UL Type 1 or IP55 drives.
3 : Finless Installation
Use this setting to install Finless Type drives.
■ L8-40: Carrier Freq Reduction Off-Delay
No.
(Hex.)
Name Description
Default
(Range)
L8-40
(04F1)
Expert
Carrier Freq Reduction Off-
Delay
Sets the length of time until the automatically reduced carrier frequency returns to the condition
before the reduction.
0.50 s
(0.00 - 2.00 s)
Set L8-40 ≠ 0.00 to enable the carrier frequency reduction function during start-up. When operation starts, the
drive automatically decreases the carrier frequency. When the time set in L8-40 is expired, the carrier frequency
returns to the value set in C6-02 [Carrier Frequency Selection].
■ L8-41: High Current Alarm Selection
No.
(Hex.)
Name Description
Default
(Range)
L8-41
(04F2)
Expert
High Current Alarm
Selection
Sets the function to cause an HCA [Current Alarm] when the output current is more than 150% of
the drive rated current.
0
(0, 1)
0 : No
The drive will not detect HCA.
1 : Yes
If the output current is more than 150% of the drive rated current, the drive will detect HCA.
The MFDO terminal set for an Alarm [H2-01 to H2-03 = 10] activates.
■ L8-42: Input Phase Loss Detection Time 2
No.
(Hex.)
Name Description
Default
(Range)
L8-42
(04F3)
Input Phase Loss Detection
Time 2
Sets the amount of time that an Input Phase Loss condition has to be present before a fault is
triggered.
2 s
■ L8-43: Output Phase Loss Detection Time
No.
(Hex.)
Name Description
Default
(Range)
L8-43
(04F4)
High Current Alarm
Selection
Sets the amount of time that an Output Phase Loss condition has to be present before a fault is
triggered.
0.5 s
(0.0 - 2.0 s)
■ L8-62: Input Phase Loss Detection
No.
(Hex.)
Name Description
Default
(Range)
L8-62
(04D8)
Input Phase Loss Detection
Sets stopping method when an input phase loss fault (PF) occurs.
0
(0 - 3)
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