YASKAWA L1000A Technical Manual page 212

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-
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-
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-
Setting 3: Alarm only
If an overheat alarm occurs, an alarm is output and the drive continues operation.
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L8-05: Input Phase Loss Protection Selection
Enables or disables the input phase loss detection.
No.
L8-05
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 of the input terminals.
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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) ×
No.
L8-06
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L8-62: Operation Selection at Input Phase Loss
Sets stopping method when a input phase loss fault (PF) occurs.
No.
L8-62
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.
212
= E), this output will be triggered.
= E), this output will be triggered.
= E), this output will be triggered.
Name
Input Phase Loss Protection Selection
2
Name
Input Phase Loss Detection Level
Name
Operation Selection at Input Phase Loss
YASKAWA ELECTRIC SIEP C710616 38A YASKAWA AC Drive L1000A Technical Manual
Setting Range
0 to 3
Setting Range
0.0 to 50.0% Determined by o2-04
Setting Range
0 to 3
Default
1
Default
Default
1