YASKAWA Lift Inverter L1000V, Техническое руководство, Страница: 145 / 282

5.8 L: Protection Functions
YASKAWA EUROPE SIEP YASKAWA AC Drive L1000V Technical Manual 145
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L8-03: Overheat Pre-Alarm Operation Selection
Sets the operation when an overheat pre-alarm is detected.
Setting 0: Ramp to stop
If an overheat alarm occurs, the drive decelerates to stop using the deceleration ramp currently selected. If a digital
output is programmed for “fault” (H2-
= E), this output will be triggered.
Setting 1: Coast to stop
If heatsink overheat (oH) occurs, the drive switches off the output and the motor coasts to stop. If a digital output is
programmed for “fault” (H2-
= E), this output will be triggered.
Setting 2: Fast Stop
If an overheat alarm occurs, the drive decelerates to stop using the Fast Stop ramp (C1-09). If a digital output is
programmed for “fault” (H2-
= E), this output will be triggered.
Setting 3: Alarm only
If an overheat alarm occurs, an alarm is output and the drive continues operation.
Setting 4: Run at Frequency set to L8-19
If an overheat alarm occurs, the drive will lower the output frequency according to the rate set in parameter L8-19.
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L8-05: Input Phase Loss Protection Selection
Enables or disables the input phase loss detection.
Setting 0: Disabled
Setting 1: Enabled
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L8-07: Output Phase Loss Protection
Enables or disables the output phase loss detection, which is triggered when the output current falls below 5% of the
drive rated current.
Note: Output phase loss detection can mistakenly be triggered if the motor rated current is very small compared to the drive rating.
Disable this parameter in such cases.
Setting 0: Disabled
Setting 1: Fault when one phase is lost
An output phase loss fault (LF) is triggered when one output phase is lost. The output shuts off and the motor coasts to
stop.
Setting 2: Fault when two phases are lost
An output phase loss fault (LF) is triggered when two output phases are lost. The output shuts off and the motor coasts to
stop.
No. Name Setting Range Default
L8-03 Overheat Pre-Alarm Operation Selection 0 to 4 3
No. Name Setting Range Default
L8-05 Input Phase Loss Protection Selection 0 to 1 Determined by o2-04
No. Name Setting Range Default
L8-07 Output Phase Loss Protection 0 to 2 1