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Altivar® 61 Variable Speed Drive Controllers Simplified Manual
Operation on an IT system and corner grounded system
30072-452-65
4/2009
WARNING
RISK OF ELECTRIC SHOCK
ATV61HC•••Y drives must not be connected on a corner grounded
system.
Failure to follow these instructions can result in death, serious
injury or equipment damage.
IT system: Isolated or impedance grounded neutral. Use a
permanent insulation monitor compatible with non-linear loads, such
as a Merlin Gerin type XM200.
Altivar 61 drive controllers feature built-in common mode RFI (EMC)
filters. When an ATV61HC••Y drive controller is operating on an
isolated or resistance grounded electrical distribution system, the
filters must be isolated (disconnected). For any other drive controller
referenced in this manual the filter should be isolated (disconnected).
Corner Grounded System: The ATV61HC••Y drive controllers must
never be connected on a corner grounded electrical distribution
system. When any other drive controller referenced in this manual is
connected to a corner grounded electricaldistribution system the
filters must be isolated (disconnected).
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