Omron VARISPEED E7 User Manual page 137

Power Loss Ride Through: L2
Param-
eter
Number
Momentary
L2-01 power loss detec-
tion
Momentary
L2-02 power loss ride
through time
Min. baseblock
L2-03
time
Voltage recovery
L2-04
time
Undervoltage
L2-05
detection level
*1. The factory setting depends on 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. Values for a 400 V class Inverter are double
5-30
Name Description
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.)
Ride through time, when Momen-
tary Power Loss Selection (L2-01)
is set to 1.
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.
Sets the time required to return the
Inverter output voltage from 0V to
normal voltage at the completion
of a speed search.
Sets the main circuit undervoltage
(UV) detection level (main circuit
DC voltage).
Usually changing this setting is not
necessary.
Change
Setting Factory during Access
Range Setting Opera- Level
tion
0 to 2 0 No A
0.1 sec.
0 to
No A
*1
25.5
0.1 sec.
0.1 to
No A
*1
5.0
0.3 sec.
0.0 to
No A
*1
5.0
150 to 190
VDC
210
No A
*2
*2
MEMO-
BUS Page
Register
485H 6-38
486H 6-38
6-38
487H
6-39
6-38
488H
6-39
489H 6-38