6
Service Manual
Plus
MICROSPEED
Capitolo 1
1.1 Introduction
General Description
The Microspeed Plus Servo Amplifier is a compact full DC four
quadrant drive. The (MOSFET)output power stage is controlled
by a 22 Khz PWM (Pulse With Modulation)signal that allows it t
drive small to medium sized brushless servo motors (up to 6Nm)
where high dynamic performance and precise speed is required.
The Microspeed only requires a single power supply to operate
and develops all needed voltages on board to make power supply
design easy and convenient.The input voltage is from 20 to 270
Vdc max "See Tecnical Data". (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:
-Tachogenerator
-Armature.
-Encoder (Option)
-Pwm+Direction (Option)
Two inputs are present for the disabling of clockwise and counter-
clockwise motor rotation (+LM SW,-LM SW).
The possibility to completely adjust the Dynamic Constant exists
by inserting new values "as opposed to the standard mounted
values".
The insertion of various prearranged operational drive values
are easily realized by opening and closing solder points. The
intervention of drive protections are all visible with LEDs on the
front of the drive.
The nominal current, as well as peak current is adjusted through
resistance on the base.
The operating temperature is from 0 to +40 °C (32° to 104°F).
In accordance with the current size and model, supplemental
ventilation can be requested.