YASKAWA J1000 Technical Manual page 121

5.7 L: Protection Functions
n L8-35: Installation Method Selection
Selects the type of installation and changes the drive overload (oL2) limits accordingly.
Note: 1. This parameter is not reset when the drive is initialized.
2. The value is preset to the appropriate value when the drive is shipped. Change the value only when using Side-by-Side installation or
when mounting a standard drive with the heatsink outside the cabinet.
No.
L8-35
Setting 0: IP20/IP00 Drive
Must be selected if an IP20/IP00 drive is installed with minimal 30 mm space to the next drive or a cabinet wall.
Setting 1: Side-by-Side Mounting
Must be selected if drives are Side-by-Side mounted with a minimum space of 2 mm.
Setting 2: NEMA Type 1 Drive
Must be selected if the drive has a NEMA Type 1 enclosure or if the drive is an IP20/Open-Chassis drive fitted with the NEMA
Type 1 Kit option.
Setting 3: Finless Drive or External Heatsink Installation
Must be selected for finless drives or if a standard drive is mounted with the heatsink outside the cabinet.
n L8-38: Carrier Frequency Reduction Selection
The drive can reduce the carrier frequency when the output current exceeds a certain level. This temporarily increases the
overload capability (oL2 detection) and the drive can run through transient load peaks without tripping.
L8-38 selects the operation of the carrier frequency reduction function.
No.
L8-38
Setting 0: Disabled
No carrier frequency reduction at high current.
Setting 1: Enabled for Output Frequencies below 6 Hz
The carrier frequency is reduced at speeds below 6 Hz when the current exceeds 100% of the drive rated current. The drive
returns to its normal carrier frequency when the current falls below 88% or the output frequency exceeds 7 Hz.
Setting 2: Enabled for Entire Frequency Range
The carrier frequency is reduced at the following speeds:
• Below 6 Hz when the current exceeds 100% of the drive rated current.
• Above 7 Hz when the current exceeds 112% of the drive rated current.
The drive uses the delay time of 0.5 s and a hysteresis of 12% when switching the carrier frequency back to the set value.
120
Name
Installation Method Selection
Name
Carrier Frequency Reduction Selection
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YASKAWA ELECTRIC SIEP C710606 31B YASKAWA AC Drive – J1000 Technical Manual
Setting Range
0 to 3
Setting Range
0 to 2
Default
0
Default
1