Omron SYSDRIVE 3G3MV

6-51
Set Values
· For the input open-phase detection level (n166), set the main-circuit DC voltage fluc-
tuation level for detecting an input open phase. Set the level as a percentage, as fol-
lows:
200-V-class Inverters: Take 400 V as 100%.
400-V-class Inverters: Take 800 V as 100%.
· Fortheinputopen-phasedetectiontime(n167),setthetime(inseconds)fordetecting
an input open phase.
Note 1. The following values are recommended for detecting an input open phase:
n166 = 7 (%); n167 = 10 (s)
Note 2. Ifeithern166orn167issetto0,theinputopen-phasedetectionfunctionwillbe
disabled.
6-10-11 Output Open-phase Detection (n168, n169)
· Theoutputopen-phasedetectionfunctionisprovidedfor5.5-kWand7.5-kWInverters
only.
· Thisfunction detects the occurrence of an output terminal open phase. Thedetection
is performed at the current flowing at each output phase.
· Ifthe current in any of the Inverter output phases becomes less than the output open-
phase detection level(n168)and persists atthis level forlonger thanthe output open-
phase detection time (n169), an output open-phase fault (LF) will be detected.
n168 Output Open-phase
Detection Level
Register 01A8
Hex
Changes during
operation
No
Setting
range
0 to 100 Unit of
setting
1 % Default setting 0
n169 Output Open-phase
Detection Time
Register 01A9
Hex
Changes during
operation
No
Setting
range
0.0 to 2.0 Unit of
setting
0.1 s Default setting 0.0
Set Values
· Forthe output open-phase detectionlevel (n168), setthecurrent for detectingan out-
put open phase. Make the setting as a percentage, taking the Inverter’s rated output
current as 100%.
· Fortheoutputopen-phasedetectiontime(n169),setthetimeinseconds fordetecting
an output open phase.
Note 1. The following values are recommended for detecting an output open phase:
n168 = 5 (%); n169 = 0.2 (s)
Advanced Operation Chapter 6