Parameter Tables
5
-
27
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.
Param-
eter-
Number
Name
Description
Setting
Range
Factory
Setting
Change
during
Opera-
tion
Access
Level
RS-422A/
485
Register
Page
LCD Display
L2-01
Momentary
power loss
detection
0: Disabled (main circuit under-
voltage (UV) detection)
1: Enabled (Restarted when the
power returns within the time
for L2-02. When L2-02 is
exceeded, main circuit under-
voltage detection.)
2: Enabled while CPU is opera-
ting. (Restarts when power
returns during control operati-
ons. Does not detect main cir-
cuit undervoltage.)
0 to 2
0
No
A
485H
6-37
PwrL Selec-
tion
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
25.5
0.1 s
*1
No
A
486H
6-37
PwrL Ride-
thru t
L2-03
Min. base-
block time
Sets the Inverter's minimum base-
block time, when the Inverter is
restarted after power loss ride-
through.
Sets the time to approximately
0.7 times the motor secondary
circuit time parameter.
When an overcurrent or overvolt-
age 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
6-37
6-38
PwrL Base-
block t
L2-04
Voltage recov-
ery time
Sets the time required to return
the Inverter output voltage to nor-
mal voltage at the completion of a
speed search.
Sets the time required to recover
from 0 V to the maximum volt-
age.
0.0 to
5.0
0.3 s
*1
No
A
488H
6-37
6-38
PwrL V/F
Ramp t
L2-05
Undervoltage
detection level
Sets the main circuit undervolt-
age (UV) detection level (main
circuit DC voltage).
Usually changing this setting is
not necessary.
Insert an AC reactor in the
Inverter input side to lower the
main circuit undervoltage detec-
tion level.
150 to
210
*2
190 V
*2
No
A
489H
6-37
PUV Det
Level
