User Constant Tables
5-33
Power Loss Ridethrough: L2
* 1. The factory setting depends upon the Inverter capacity. The value for a 200 V Class Inverter of 0.4 kW is given.
* 2. These are values for a 200 V class Inverter. Value for a 400 V class Inverter is double.
Con-
stant
Number
Name Description
Setting
Range
Factory
Setting
Change
during
Opera-
tion
Access
Level
MEMO-
BUS
Register
Page
L2-01
Momentary power
loss detection
0: Disabled (DC bus undervoltage
(UV1) detection)
1: Enabled (Restarted when the
power returns within the time set
in L2-02. When L2-02 is
exceeded, DC bus undervoltage
is detected.)
2: Enabled while CPU is operating.
(Restarts when power returns
during control operations. Does
not detect DC bus
undervoltage.)
0 to 2 0 No A 485H 6-38
L2-02
Momentary power
loss ridethru time
Ridethrough time, when Momen-
tary Power Loss Selection (L2-01)
is set to 1, in units of seconds.
0 to 2.0
0.1 s
*1
No A 486H 6-38
L2-03
Min. baseblock
time
Sets the Inverter's minimum base-
block time, when the Inverter is
restarted after power loss ride-
through.
Set the time to approximately 0.7
times the motor time constant.
When an overcurrent or overvol-
tage occurs when starting a speed
search or DC injection braking,
increase the set values.
0.1 to
5.0
0.1 s
*1
No A 487H
6-38
6-39
L2-04
Voltage recovery
time
Sets the time required to return the
Inverter output voltage from 0V to
normal voltage at the completion of
a speed search.
0.0 to
5.0
0.3 s
*1
No A 488H
6-38
6-39
L2-05
Undervoltage
detection level
Sets the main circuit undervoltage
(UV) detection level (main circuit
DC voltage).
Usually changing this setting is not
necessary.
150 to
210
*2
190 V
*2
No A 489H 6-38
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