L2: Momentary Power Loss Ride-Thru - YASKAWA V1000 Technical Manual

Setting 1: Coast to Stop
The drive output is switched off and the motor coasts to stop.
Setting 2: Fast-stop
The drive stops the motor using the Fast-stop time set in parameter C1-09.
n L1-05: Motor Temperature Input Filter Time
Used to set a filter on the PTC signal in order to prevent a motor overheat fault from being mistakenly detected.
No.
L1-05
n L1-13: Continuous Electrothermal Operation Selection
Determines whether to hold the current value of the electrothermal motor protection (L1-01) when the power supply is
interrupted.
No.
L1-13 Continuous Electrothermal Operation Selection
Setting 0: Disabled
Setting 1: Enabled
n L1-22: Leakage Current Filter Time Constant 1
Note: 1. Available in drive software versions PRG: 1021 and later.
2. Available only when C6-02 is set to B. To display this parameter, first set C6-02 to B.
Sets the time constant for the filter applied to motor overload detection current or monitor current for constant speed
operation. Leakage current can incorrectly trigger motor overload fault oL1 or result in incorrect monitor reading. Increase
this setting if erroneous detection occurs or if the monitor display is incorrect.
NOTICE: Setting parameter L1-22 too high may cause the drive to detect motor overload too slowly and burn out the motor. Be sure
to set L1-22 to an appropriate value for the application.
No.
L1-22
n
L1-23: Leakage Current Filter Time Constant 2
Note: 1. Available in drive software versions PRG: 1021 and later.
2. Available only when C6-02 is set to B. To display this parameter, first set C6-02 to B.
Sets the time constant for the filter applied to monitor current during acceleration and deceleration. Leakage current can
result in incorrect monitor reading. Increase this setting if the monitor display is incorrect.
Note: Setting parameter L1-23 too high may cause the current monitor to take too long to read the initial current level. Check the operation
sequence being used if this is a problem.
No.
L1-23
u

L2: Momentary Power Loss Ride-Thru

n L2-01: Momentary Power Loss Operation Selection
When a momentary power loss occurs (DC bus voltage falls below the level set in L2-05), the drive can be set to
automatically return to the operation it was performing when the power went out based on certain conditions.
No.
L2-01
Setting 0: Disabled (default)
If power is not restored within 15 ms, a Uv1 fault will result and the drive will stop the motor.
Setting 1: Enabled, Recover Within L2-02
When a momentary power loss occurs, the drive will attempt to restart and perform Speed Search if power is restored
within the period of time set to parameter L2-02. If power is not restored within the time set to L2-02 (i.e. DC bus voltage
level remains below Uv1 detection level L2-05), then a Uv1 fault is triggered and the drive output will be shut off.
YASKAWA ELECTRIC SIEP C710606 16C YASKAWA AC Drive – V1000 Technical Manual
Name
Motor Temperature Input Filter Time
Name
Name
Leakage Current Filter Time Constant 1
Name
Leakage Current Filter Time Constant 2
Name
Momentary Power Loss Operation Selection
5.8 L: Protection Functions
Setting Range
0.00 to 10.00 s
Setting Range
0 or 1
Setting Range
0.0 to 60.0 s
Setting Range
0.0 to 60.0 s
Setting Range
0 to 2
Default
0.20 s
Default
1
Default
20.0 s
Default
1.0 s
5
Default
0
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