2
Introduction
Figure 1-2 BRU-200 Series Servo Drives
A brief description
of
the BRU-Series major components follows.
1.2.1 Power Supply Modules (BRU-500 Only)
The power supply module
(PSM)
can supply DC power
to
as
many as slx servo
or
spindle drive modules.
The
AC
voltage input
to
the
PSM
is non-isolated
or
isolated three phase power. The output, which is daisy-
chained
to
the drive modules, is a
two
wire DC bus. The PSM requires
no
adjustments, protects itself,
provides trouble-shooting diagnostics, and has a built-in solid-state "soft charge•
of
the DC bus capacitors
to
reduce AC inrush currents. It also includes a built-in dissipative shunt regulator that provides quick
discharge
of
the DC bus capacitors and doubles as an emergency synchronous motor dynamic brake.
1.2.2 Drive Modules
The drive modules (OM) provide control and power for either S-Series and F-Series permanent magnet
synchronous motors
or
!-Series squirrel cage induction motors (BRU-500 only). The
OMs
are available
in
a
range of current ratings
to
best complement the variety
of
available motors. The
OM
control circuitry
utilizes a 16 bit microprocessor
to
provide high performance and a simple serial interface from a host
computer
or
user programming terminal
to
the servo drive.
All set-up and tuning is performed by a personality module
(PM)
which plugs into the
DM.
The
PM
customizes the
DM
for
each specific motor and encoder type. The standard decimal line count encoders
are factory-installed on the motors.
BRU-200/BRU-500 Brushless Drives Instruction Manual
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