5-30
Power Loss Ride Through: L2
Param-
eter
Number
Name Description
Setting
Range
Factory
Setting
Change
during
Opera-
tion
Access
Level
MEMO-
BUS
Register
Page
L2-01
Momentary
power loss detec-
tion
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 operat-
ing. (Restarts when power
returns during control opera-
tions. Does not detect DC bus
undervoltage.)
0 to 2 0 No A 485H 6-38
L2-02
Momentary
power loss ride
through time
Ride through time, when Momen-
tary Power Loss Selection (L2-01)
is set to 1.
0 to
25.5
0.1 sec.
*1
*1. The factory setting depends on the Inverter capacity. The value for a 200 V Class Inverter of 0.4 kW is given.
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.
If an overcurrent or overvoltage
occurs when starting a speed
search or DC injection braking,
increase the set values.
0.1 to
5.0
0.1 sec.
*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 sec.
*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
VDC
*2
*2. These are values for a 200 V class Inverter. Values for a 400 V class Inverter are double
No A 489H 6-38
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