YASKAWA L1000A Technical Manual page 236

5.8 L: Protection Functions
■ L8-05: Input Phase Loss Protection Selection
Enables or disables the input phase loss detection.
No.
L8-05
<1> Setting 1 cannot be selected for 600 V class drive models and models CIMR-LF that are in compliance with IEC/EN 61508 SIL3 Safety
Integrity Level 3.
<2> The default is 2 for 600 V class drive models and models CIMR-LF that are in compliance with IEC/EN 61508 SIL3 Safety Integrity
Level 3.
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 or 575 V) ×
No.
L8-06
■ L8-62: Operation Selection at Input Phase Loss
Sets stopping method when a input phase loss fault (PF) occurs.
No.
L8-62
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 or disables the output phase loss detection, which is triggered when the output current falls below 5% of the drive
rated current.
Note: 1. Nuisance output phase loss detection may occur if the motor's rated current is significantly less than the drive rated current. 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.
3. Set parameters S1-02 and S1-04 as follows when setting L8-07 to 3. An incorrect setting may result in poor performance or nuisance
faults or alarms.
 Set S1-02 (DC Injection Current at Start) to a value greater than 15%.
 Set S1-04 (DC Injection/Position Lock Time at Start) to a value greater than 100 ms.
No.
L8-07
<1> The setting range changes depending on drive software versions.
PRG: 7017 or earlier: 0 to 2
PRG: 7200 or later: 0 to 3
<2> Setting 3 is available in the control mode V/f or OLV.
236
Parameter Name
Input Phase Loss Protection Selection
Parameter Name
Input Phase Loss Detection Level
Parameter Name
Operation Selection at Input Phase Loss
Parameter Name
Output Phase Loss Protection
YASKAWA ELECTRIC SIEP C710616 38F YASKAWA AC Drive - L1000A Technical Manual
Setting Range
0 to 3
2
Setting Range
0.0 to 50.0%
Setting Range
0 to 3
Setting Range
<1> <2>
Default
1
<1> <2>
Default
Determined by o2-04
Default
1
Default
0