BENSHAW M2L 3000, User Manual

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M2L 3000 Series VFD
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Cell Status This view displays meter values for each individual cell in the inverter. The top menu can be used
to switch between phases (A, B, C). The cell numbers listed on the left of the screen correspond to
the physical cell layout, and can be used as a reference when testing and replacing problematic
cells.
NOTE : Yellow or red meter values indicate abnormal conditions in the cell, tied to
warnings and faults. Black text in the Capacitor Voltage columns is normal while the drive
precharges, and should change to green before precharge completes.
When any cell is faulted, the numbered indicator on the left will turn red. Specific faults can then
be viewed by pressing the button around the indicator. Multiple cells can fault at the same time,
and multiple fault conditions can be present in each cell. See
Section 8 – Fault Conditions for
information on each type of cell fault.
NOTE: For Drives with 12 or more cells per phase, meters are only displayed for 1 cell at
a time, with a cell selection menu taking up most of the screen.
WARNING : Potentially hazardous voltages will remain in the cells until the capacitors are
able to de-energize. Wait at least 30 minutes after main power is removed for the stored
voltages to dissipate if removing the Inverter Cell or Input/Output section covers. Do not
rely solely on the voltage values displayed on the HMI Meter Values screen to determine
if it is safe to remove the covers on the Inverter Cell and Input/Output sections.