Output Open-Phase Detection (N168, N169) - Omron SYSDRIVE 3G3MV User Manual

Advanced Operation
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:
400-V-class Inverters:
For the input open-phase detection time (n167), set the time (in seconds) for detecting
·
an input open phase.
The following values are recommended for detecting an input open phase:
Note 1.
n166 = 7 (%); n167 = 10 (s)
If either n166 or n167 is set to 0, the input open-phase detection function will be
Note 2.
disabled.

Output Open-phase Detection (n168, n169)

6-10-11
The output open-phase detection function is provided for 5.5-kW and 7.5-kW Inverters
·
only.
This function detects the occurrence of an output terminal open phase. The detection
·
is performed at the current flowing at each output phase.
If the current in any of the Inverter output phases becomes less than the output open-
·
phase detection level (n168) and persists at this level for longer than the output open-
phase detection time (n169), an output open-phase fault (LF) will be detected
Output Open-phase
n168
Detection Level
Setting 0 to 100
range
Output Open-phase
n169
Detection Time
Setting 0.0 to 2.0
range
Set Values
For the output open-phase detection level (n168), set the current for detecting an out-
·
put open phase. Make the setting as a percentage, taking the Inverter's rated output
current as 100%.
For the output open-phase detection time (n169), set the time in seconds for detecting
·
an output open phase.
The following values are recommended for detecting an output open phase:
Note 1.
n168 = 5 (%); n169 = 0.2 (s)
Take 400 V as 100%.
Take 800 V as 100%.
Register 01A8
Unit of
setting
Register 01A9
Unit of
setting
Changes during
Hex operation
1 % Default setting
Changes during
Hex operation
0.1 s Default setting
Chapter 6
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No
0
No
0.0
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