• The VFD controller in the operator is rated to operate on input frequencies ranging from 48Hz through
62Hz on 1Ø or 3Ø power, but only on either 460VAC or 208V/230V. (A change between 460V and 230V,
either direction, requires replacement of the VFD controller).
• The control transformer in the operator has multiple voltage taps and rated for 50/60Hz operation.
•
The VFD controller first rectifies and filters the incoming power to DC, which has no frequency or
phase. It then creates 3Ø variable voltage/variable frequency AC for the motor from the DC.
• Depending on the model, the VFD controller ramps the motor voltage and frequency from 0V@0Hz at
start, to either 208/230 or 460 VAC at various frequencies for full speed. This allows use of 60Hz motors
regardless of the incoming frequency.
• Since the input voltage/frequency is converted to DC to begin with, there is absolutely no relationship
between the input frequency/phase and frequency/phase of the power supplied to the motor. The
input could be 1Ø or 3Ø, 48Hz or 62Hz and the controller/motor combination wouldn’t care. It will
create the ramped 3Ø voltage and frequency for which it is programmed
In-Field Connections
HydraSwing operators are field re-connectable for 1Ø or 3Ø, 208/230VAC input power without changing
the VFD.
WARNING
HydraSwing operators CANNOT be connected to 115/120VAC, 1Ø power or 575V, 3Ø power. If any attempts
are made to do so, serious injury, electrical shock, or death may result. Any electrical damage occurring to the
operator will not be covered by the Limited Warranty.
WARNING
HydraSwing operators are NOT field re-configurable between 208/230VAC and 460VAC power. The VFD Motor
Controller in a 208/230VAC unit must be replaced with a VFD Motor Controller manufactured for the higher
(460VAC) voltage input.
© 2018
Power
MX3636-01 Rev. D
19
Summary of Contents for HSG80F
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