YASKAWA FSDrive-MV1000 Parameter Manual page 199

Figure 2.71
Note: When a momentary power loss occurs, check if the Run command remains in effect. If the Run command is turned OFF, the
drive will not be able to accelerate to the speed set in the frequency reference when the power is restored.
L2-02: Momentary Power Loss Ride-Thru Time
■
Sets the maximum time allowed to ride through a power loss. If power loss operation exceeds this time, the drive will
attempt to accelerate back to frequency reference. This parameter is valid if L2-01 = 1.
Note: The amount of time the drive is capable of recovering after a power loss is determined by the capacity of the drive. Drive
capacity determines the upper limit for L2-02.
No.
L2-02 Momentary Power Loss Ride-Thru Time
<1> For details on the default settings, refer to
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
the drive waits for the residual voltage in the motor to dissipate. Increase this setting if overcurrent or overvoltage occurs
at the beginning of Speed Search, after a power loss, or during DC Injection Braking.
No.
L2-03 Momentary Power Loss Minimum Baseblock Time 0.1 to 20.0 s
<1> For details on the default settings, refer to
L2-04: Momentary Power Loss Voltage Recovery Ramp Time
■
Sets the time for the drive to restore the output voltage to the level specified by the V/f pattern after Speed Search. The
setting value determines the time for the voltage to go from 0 V to the maximum voltage.
No.
Momentary Power Loss Voltage Recovery Ramp
L2-04
<1> For details on the default settings, refer to
L2-05: Undervoltage Detection Level (Uv)
■
Determines the voltage at which a Uv1 fault is triggered or at which the KEB function is activated. This setting rarely
needs to be changed.
No.
L2-05 Undervoltage Detection Level (Uv)
<1> For details on the default settings, refer to
YASKAWA ELECTRIC EZZ010930 FSDrive-MV1000 Parameter Guide
L1 R
L2 S
L3 T
UV Detection
Relay
9 - KEB Command 1
10
13 - Run command
14
Figure 2.71 Example Wiring for KEB Ride-Thru Function
Name
Control Mode Dependent Parameter Default Values on page
Name
Control Mode Dependent Parameter Default Values on page
Name
Time
Control Mode Dependent Parameter Default Values on page
Name
Control Mode Dependent Parameter Default Values on page
U
V
W
Setting Range
0.0 to 25.5 s
Setting Range
Setting Range
0.0 to 5.0 s
Setting Range
0 to 1700 V
2.8 L: Protection Functions
M
Default
Determined by o2-04
<1>
79.
Default
Determined by o2-04
<1>
79.
Default
Determined by o2-04
<1>
79.
Default
Determined by o2-04
<1>
79.
199