Yaskawa L1000E AC Drive Technical Manual for CIMR-LE Models for Elevator Applications - Manual (Page 226)

5.8 L: Protection Functions
226 YASKAWA ELECTRIC SIEP YAIL1E 01A YASKAWA AC Drive L1000E Technical Manual
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.
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.
■ 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) ×
■ L8-62: Operation Selection at Input Phase Loss
Sets stopping method when a input phase loss fault (PF) occurs.
Setting 0: Ramp to stop. Decelerates to stop using the deceleration ramp in C1-02.
Setting 1: Coast to stop
Setting 2: Fast stop. Decelerates to stop using the deceleration ramp in C1-09.
Setting 3: Alarm only. Drive continues operation.
■ L8-07: Output Phase Loss Protection
Enables and disables the output phase loss detection triggered when the output current falls below 5% of the drive rated
current.
Note: 1. 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.
2. Output phase loss detection is not possible when the drive is running a PM motor with light load.
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.
No. Parameter Name Setting Range Default
L8-05 Input Phase Loss Protection Selection 0 to 3 1
No. Parameter Name Setting Range Default
L8-06 Input Phase Loss Detection Level 0.0 to 50.0% Determined by o2-04
No. Parameter Name Setting Range Default
L8-62 Operation Selection at Input Phase Loss 0 to 3 1
No. Parameter Name Setting Range Default
L8-07 Output Phase Loss Protection 0 to 3 0
2