Omron SYSDRIVE 3G3MV A2002, Руководство пользователя

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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%.
·
For the input open-phase detection time (n167), set the time (in seconds) for detecting
an input open phase.
Note 1.
The following values are recommended for detecting an input open phase:
n166 = 7 (%); n167 = 10 (s)
Note 2.
If either n166 or n167 is set to 0, the input open-phase detection function will be
disabled.
6-10-11
Output Open-phase Detection (n168, n169)
·
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
.
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
·
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.
Note 1.
The following values are recommended for detecting an output open phase:
n168 = 5 (%); n169 = 0.2 (s)
Advanced Operation Chapter 6