VF-FS1 Industrial Inverter - Toshiba
VF-FS1 Industrial Inverter - Toshiba
VF-FS1 Industrial Inverter - Toshiba
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6<br />
6.17.6 Input phase failure detection<br />
: Input phase failure detection mode selection<br />
F-62<br />
E6581381<br />
• Function<br />
This parameter detects inverter input Phase failure. If the abnormal voltage status of main circuit<br />
capacitor persists for few minutes or more, the tripping function and the FL relay will be activated.<br />
Therefore, input phase failures cannot always be detected. A trip information will be<br />
displayed.<br />
If the power capacity is larger than the inverter capacity (more than 200kVA or more than 10 times),<br />
detection errors may occur. If this actually happens, install an input AC reactor.<br />
=: No tripping (Failure signal FL not activated)<br />
=: Phase failure detection is enabled during operation. The inverter will trip if the abnormal voltage<br />
status of main circuit capacitor persists for ten minutes or more. (Failure signal FL activated)<br />
Title Function Adjustment range Default setting<br />
<br />
Input phase failure detection mode<br />
selection<br />
0: Disabled, 1: Enabled 1<br />
Note: Setting to (input phase failure detection: disabled) may result in a breakage of the<br />
capacitor in the inverter main circuit if operation is continued under a heavy load in spite of the<br />
occurrence of an input phase failure.<br />
6.17.7 Control mode for small current<br />
: Small current detection current hysteresis<br />
: Small current trip/alarm selection<br />
: Small current detection current<br />
: Small current detection time<br />
• Function<br />
The parameter allows the inverter to be tripped if a current smaller than the specified<br />
value flows for more than the -specified time. When tripping is selected, enter the<br />
detection time to tripping. Trip information is displayed as "".<br />
=: No tripping (Failure signal FL not activated).<br />
A small current alarm can be put out by setting the output terminal function selection parameter.<br />
=: The inverter will trip (Failure signal FL activated) if a current below the current set with <br />
flows for the period of time specified with .