n083 : Input Phase Loss Detection Level Factory setting: 7 %
(In Ph Loss Lvl)
Range: 1 to 100 %
The input phase loss detection circuit monitors the DC bus current ripple and activates when
one of the input phases is lost. The detection circuit calculates the maximum and minimum
values of the DC bus voltage in 1.28 second intervals, and compares the difference (∆ V)
between these values with the input phase loss detection level (n083). If ∆ V ≥ n083,
then an input phase loss is detected, and after the 10.24s, an SPI fault occurs, the display
shows "SPi Input PhaLoss" and the motor coasts to stop.
Input phase loss detection is disabled in the following cases:
• Parameter n083 is set to data " 100 ".
• A Stop command is input.
• Magnetic Contactor (MC) shuts OFF.
• CPU A/D converter fault (CPF5).
• During acceleration.
• Output current ≤ 30% of drive rated current.
5-63
5.29 INPUT PHASE LOSS DETECTION
To Next Page
Loading...
