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Chapter 1
Description
1.1 Introduction
The Micro B Brushless Servo Amplifier is a compact
full four quadrant drive. The (MOSFET)output power
stage is controlled by a 22 Khz PWM (Pulse Width
Modulation)signal that allows it to drive small to
medium sized brushless servo motors where high
dynamic performance and precise speed is required.
The Micro B only requires a single power supply to
operate and develops all needed voltages on board to
make power supply design easy and convenient.The
imput voltage is from 20 to 80 Vdc max; Chapter 3
describes how to design a proper supply.
Closing the velocity feedback loop to motor may be
done in several different ways to accommodate most
applications. Three types of velocity feedback are
available with these drives. Refer to Chapter 5 for the
setup procedures that will effect your application.
Feedback Types:
-Hall effect + encoder.
-Internal PWM (Armature).
-Hall effect
These drives have been factory set, but these settings
may need to be changed based on the motor and the
load,refer to Chapters 2 and 5 for the correct setting
for your applications. Changes are made using
resistors, potentiometers and solder bridges.
4
Service Manual