Yaskawa iQpump Controller Programming Manual User Manual
Page 118

118
YASKAWA
TM.iQp.07 iQpump Controller Programming Manual
◆
L2-05 Undervoltage Detection Level
Setting Range:
150 ~ 210 Vdc
Factory Default: 190 Vdc
The L2-05 parameter sets the DC Bus undervoltage level. The setting of L2-05 affects the voltage at which a UV alarm or a UV1 fault
will occur. If the setting of L2-05 is lowered below the factory default level (190 Vdc for a 240 Vac drive and 380 Vdc for a 480 Vac
drive), then an AC Input Reactor must be installed on the input AC line to prevent inrush current from damaging the drive’s input diodes.
An AC Line dip and fast voltage recovery can potentially cause a large inrush current.
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