DS4 C
HAPTER
1 - S
YSTEM
D
ESCRIPTION
1-1
C
HAPTER 1
S
YSTEM
D
ESCRIPTION
1.1 INTRODUCTION
The information in this chapter will enable you to
understand the product's basic functions and features.
These concepts will allow you to apply them to your
own unique applications.
1.2 PRODUCT DESCRIPTION
Industrial Drives' BDS4 product lines are 3-phase
sine wave, brushless motor controllers. They are
fully regenerative four-quadrant, bi-directional
velocity loop amplifiers designed to be used with
Industrial Drives' high performance B series
permanent magnet brushless motors.
Although the BDS4 is basically an analog servo
amplifier, it contains a microprocessor to implement
Industrial Drives' patented Torque Angle Control
function for maximum system performance.
The BDS4 amplifier modules are available in sizes of
3, 6, 10, 20, 30, 40 and 55 amps RMS/phase
continuous. The modular design provides the
flexibility for multiple axes to share a common power
supply requiring no input isolation transformer.
The PSR4/5 Power Supply modules are available in
sizes of 12, 20, 50 and 75 amps RMS/phase
continuous (AC input line ratings).
Numerous Industrial Drives B Series motors with
various diameters, stack lengths, and windings are
also available.
1.3 FEATURES
Highlighted design features are:
•
Modular construction maximizing serviceability.
•
Two-part plug connectors interfacing between
the BDS4, PSR4/5, and other equipment.
•
Routine adjustments accessible from the front of
the BDS4.
•
High frequency (20 kHz) motor current ripple for
quality servo performance, higher efficiency, and
less audible noise.
•
Differential velocity or current command input.
•
Voltage programmable current limit input.
•
A removable compensation board containing all
the components that make the BDS4 compatible
with a particular motor.
•
Protection against thermal overload indicates any
overtemperature conditions. The BDS4 is
protected against peak current overloads by a
current foldback circuit. Also, it is protected
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