Control Techniques Mini Maestro Drive User manual

User Guide
Mini Maestro
Drive
Variable Speed Drive
for Permanent-magnet DC Servo-motors
Part Number: 0470-0005
Issue Number: 2

Safety Information
Persons supervising and performing the electrical installation or
maintenance of a Drive and/or its external Option Unit must be
suitably qualified and competent in these duties. They should be
given the opportunity to study and if necessary to discuss this
User Guide before work is started.
The voltages present in the Drive and external Option Units are
capable of inflicting a severe electric shock and may be lethal.
The Stop function of the Drive does not remove dangerous
voltages from the terminals of the Drive and external Option
Unit. Mains supplies should be removed before any servicing
work is performed.
The installation instructions should be adhered to. Any questions
or doubt should be referred to the supplier of the equipment. It
is the responsibility of the owner or user to ensure that the
installation of the Drive and external Option Unit, and the way in
which they are operated and maintained complies with the
requirements of the Health and Safety at Work Act in the United
Kingdom and applicable legislation and regulations and codes of
practice in the UK or elsewhere.
The Drive software may incorporate an optional Auto-start
facility. In order to prevent the risk of injury to personnel
working on or near the motor or its driven equipment and to
prevent potential damage to equipment, users and operators, all
necessary precautions must be taken if operating the Drive in this
mode.
The Stop and Start inputs of the Drive should not be relied upon
to ensure safety of personnel. If a safety hazard could exist from
unexpected starting of the Drive, an interlock should be installed
to prevent the motor being inadvertently started.

General Information
The manufacturer accepts no liability for any consequences
resulting from inappropriate, negligent or incorrect installation or
adjustment of the optional operating parameters of the
equipment or from mismatching the Drive with the motor.
The contents of this User Guide are believed to be correct at the
time of printing. In the interests of a commitment to a policy of
continuous development and improvement, the manufacturer
reserves the right to change the specification of the product or
its performance, or the contents of the User Guide, without
notice.
All rights reserved. No part of this User Guide may be
reproduced or transmitted in any form or by any means,
electrical or mechanical including photocopying, recording or by
any information storage or retrieval system, without permission
in writing from the publisher.
Copyright © November 1998
Control Techniques Drives Ltd
Issue Code: Minu2
Issue Date: November 1998

Contents
1 Data 1
2 Mechanical Installation 4
2.1 Dimensions of the Drive 4
2.2 Mounting location 5
2.3 Choke (optional) 8
3 Electrical Installation 10
3.1 Connections 10
3.2 Grounding 14
3.3 External power supply 15
3.4 Motor connections 18
3.5 Signal connections 19
4 Setting up the Drive 21
4.1 Adjusting the potentiometers 21
4.2 Mounted components 23
4.3 Making adjustments to the Drive 24
4.4 Motor phasing 29
4.5 Dynamic calibration 29
5 Diagnostics 38
5.1 LED indicators 38
5.2 Fault finding 38
6 Accessories 40