YASKAWA L1000A Series, Техническое руководство

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5.8 L: Protection Functions
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-DD = 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-DD = 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-DD = E), this output will be triggered.
Setting 3: Alarm only
If an overheat alarm occurs, an alarm is output and the drive continues operation.
■ L8-05: Input Phase Loss Protection Selection
Enables or disables the input phase loss detection.
No. Name Setting Range Default
L8-05 Input Phase Loss Protection Selection 0 to 3 1
Setting 0: Disabled
Setting 1: Enabled
Setting 2: Enabled during operation
Setting 3: Enabled during constant speed
A phase loss on the power supply side is detected by measuring the voltage ripple in the DC bus and the drive input
voltage.
Input phase loss (PF) detection is typically triggered by single phase losses, voltage drop or phase imbalance.
Input phase loss detection is disabled when Rescue Operation is activated by one o f the input terminals.
■ L8-06: Input Phase Loss Detection Level
Determines the level for input phase loss detection when a ripple is observed in the DC bus. Phase loss is detected when
the value set to L8-06 is greater than the difference between the peak value and the lowest value of the voltage ripple.
100% detection level = voltage (200 V or 400 V) x J 2
No. Name Setting Range Default
L8-06 Input Phase Loss Detection Level 0.0 to 50.0% Determined by o2-04
■ L8-62: Operation Selection at Input Phase Loss
Sets stopping method when a input phase loss fault (PF) occurs.
No. Name Setting Range Default
L8-62 Operation Selection at Input Phase Loss 0 to 3 1
0: Ramp to stop. Decelerates to stop using the deceleration ramp in C1-02.
1: Coast to stop
2: Emergency stop. Decelerates to stop using the deceleration ramp in C1-09.
3: Alarm only. Drive continues operation.
■ L8-07: Output Phase Loss Protection
Enables or disables the output phase loss detection, which is triggered when the output current falls below 5% o f the
drive rated current.
Note: 1. O utput phase loss detection can mistakenly be triggered if the m otor rated current is very small compared to the drive rating. Disable
this param eter in such cases.
2. O utput phase loss detection is not possible w hen the drive is running a PM m otor w ith light load.
No. Name Setting Range Default
L8-07 Output Phase Loss Protection 0 to 2 0
YASKAWA ELECTRIC SIEP C710616 33D YASKAWA AC Drive L1000A Technical Manual 199
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