YASKAWA OYMC V1000

1.8 L: Protection Functions
YASKAWA ELECTRIC SIEP C710606 10A YASKAWA AC Drive - V1000 PRELIM. Programming Manual 193
Parameter Details
1
■ L2-02: Momentary Power Loss Ride-Thru Time
Set the time in which the power has to return before a UV fault is tripped. This parameter is
valid only if L2-01 = 1.
■ L2-03: Momentary Power Loss Minimum Baseblock Time
Sets the minimum baseblock time when power is restored following a momentary power
loss. This determines the time it takes for the leftover voltage in the motor to dissipate.
Increase this setting if overcurrent or overvoltage occur at the beginning of Speed Search
after a power loss. If L2-03 > L2-02, then the drive will restart after the time set to L2-03 has
passed from the beginning of the power loss.
If overcurrent occurs at the beginning of Speed Search or DC Injection Braking, try
increasing this setting.
■ L2-04: Momentary Power Loss Voltage Recovery Ramp Time
Sets the time constant used to ramp up the voltage during Speed Search. The setting value
determines the time for a change from zero to the maximum voltage.
■ L2-05: Undervoltage Detection Level
Determines the voltage at which a UV1 fault is triggered or at which the KEB function is
activated.
No. Name Setting Range Default
L2-02 Momentary Power Loss Ride-Thru Time 0.0 to 25.5 s
Determined by
o2-04.
No. Name Setting Range Default
L2-03
Momentary Power Loss Minimum Baseblock
Time
0.1 to 5.0 s
Determined by
o2-04
No. Name Setting Range Default
L2-04
Momentary Power Loss Voltage Recovery Ramp
Time
0.0 to 5.0 s
Determined by
o2-04
No.
<1> Values are for 200 V class drives and must be doubled for 400 V class drives.
<2> This value is initialized when E1-01 is changed.
Name Setting Range Default
L2-05 <1> Undervoltage Detection Level 150 to 210 V 190 V <2>