YASKAWA OYMC V1000, Programming Manual

Page: 223 / 408

1.8 L: Protection Functions
YASKAWA ELECTRIC SIEP C710606 10A YASKAWA AC Drive - V1000 PRELIM. Programming Manual 223
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Setting 0: IP20/Open-Chassis Drive
Must be selected if an IP20/Open-Chassis 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: IP20/NEMA Type 1 Drive
Must be selected if the drive has a IP20/NEMA Type 1 enclosure.
Setting 3: Finless Drive or Heatsink Outside Installation
Must be selected for finless drives or if a standard drive is mounted with the heatsink outside
the cabinet.
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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.
Note: This functions can not be used in Open Loop Vector for PM motors.
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 the whole frequency range
The carrier frequency is reduced at the following speeds:
• below 6 Hz when the current exceeds 100% of the drives rated current.
• above 7 Hz when the current exceeds 112% of the drives rated current.
No. Name Setting Range Default
L8-35 Installation Method Selection 0 to 3 0
No. Name Setting Range Default
L8-38 Carrier frequency reduction selection 0 to 2
Depending on
size