CHAPTER ONE: GENERAL
1.1. Overview
The Glentek Inc. SMB9675-1A-1 vector drive uses flux vector technology to close
a torque (current) feedback loop. When applied to a three phase induction motor,
the result is servo motor like performance from a standard three phase induction
motor. The Digital Signal Processor (DSP) based vector drive uses it’s high speed
math processing capability to continuously calculate flux and torque vectors and to
maintain a constant 90 degree phase difference between the vectors. This technique
allows torque control from zero speed to base speed and above. Encoder feedback
provides the shaft position data needed to calculate the vectors and velocity data, thus,
Vector Control allows precise speed control down to and including zero speed of an
induction motor.
The SMB9675-1A-1 vector drive can operate in sensorless mode (no feedback is
needed). This mode of operation is usually referred to as inverter mode or VFD
(Variable Frequency Drive) mode. With advanced mathematic algorithms and latest
DSP technology, Glentek SMB9675-1A-1 VFD is optimized to produce a steady start-
ing torque from standstill right up to full speed with high efficiency. The applied fre-
quency and voltage are increased at a controlled rate and ramped up to accelerate the
load without drawing excessive current.
1.2. Intended Application
The SMB9675-1A-1 is a drop-in replacement vector drive or VFD drive on FADAL EN-
GINEERING VMC’s having the part numbers listed in Table 1 (vector drive) and Table
2 (VFD drive). Specify equivalent GTK P/N when ordering.
Fadal is a trademark of Fadal Machining Centers, we have no affiliation with Fadal or Mag IAS
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Содержание SMB9675-1A-1
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