Emerson Mini Maestro DCD60x3/6, Mini Maestro DCD60x10/20, Mini Maestro DCD60x14/28, Mini Maestro DCD60x7/14 User Manual
User Guide
Variable Speed Drive for
Permanent-magnet DC
Servo-motors
Part Number: 0470-0009-05
Issue: 5
www.controltechniques.com
Mini Maestro
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 Drive is intended for operation from a nominal 60V DC supply. It is the installer’s
responsibility to ensure that this supply is safely isolated from dangerous mains
supply voltages, and correctly protected by fuses.
The Stop function of the Drive does not remove 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 may start automatically when power is applied. All necessary precautions
must be taken to avoid injury to personnel or damage to equipment as the result of
unexpected application of power.
The enable input 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 © June 2007 Control Techniques Drives Ltd
Issue Code: 5
Mini Maestro User Guide 3
Issue Number: 5 www.controltechniques.com
Contents
1 Data .................................................................................4
2 Mechanical Installation ..................................................6
2.1 Dimensions of the drive ...........................................................................6
2.2 Mounting location ....................................................................................6
2.3 Choke (optional) ......................................................................................9
3 Electrical Installation ...................................................11
3.1 Connections ..........................................................................................11
3.2 Grounding ..............................................................................................13
3.3 External power supply ...........................................................................13
3.4 Motor connections .................................................................................16
3.5 Signal connections ................................................................................17
4 Setting up the drive ......................................................18
4.1 Adjusting the potentiometers .................................................................18
4.2 Mounted components ............................................................................19
4.3 Making adjustments to the drive ............................................................20
4.4 Motor phasing ........................................................................................23
4.5 Dynamic calibration ...............................................................................23
5 Diagnostics ...................................................................27
5.1 LED indicators .......................................................................................27
5.2 Fault finding ...........................................................................................27
6 Accessories ..................................................................28
4 Mini Maestro User Guide
www.controltechniques.com Issue Number: 5
1Data
Analog speed reference input ±10V (33kΩ input impedance)
Analog current reference input ±10V 22kΩ (TPRC)
Enable signal Minimum 10V
Maximum 30V
20kΩ input impedance
Error amplifier temperature drift ±25 µV / °C
Error amplifier offset Offset at 25°C ±100µV
Tachogenerator feedback control range 1 to 5000 RPM
Minimum tachogenerator signal at
maximum speed
5V
Armature feedback control range 150 ~ 3000 RPM
Ambient temperature Operating temperature range –10°C (50°F)
to +45°C (113°F)
D C s u p p l y : B a t t e r y
Nominal
Rectified AC supply
Minimum 24V
Maximum 72V
60V
Minimum 20V
Maximum 80V
Maximum ripple 2V peak to peak
Reference voltages ±10V 3mA maximum
Monitor motor current ±8V
Monitor motor requested current
(TPRC)
±10V
Power cables
2.5 mm
2
(AWG 14) for DCD60x10/20 and
DCD60x14/28 models
1.5 mm
2
(AWG 16) for DCD60x3/6 and
DCD60x7/14 models
Signal wiring
0.5mm
2
(AWG 20)
Current tolerance ±10%
Protection Overtemperature on heatsink 100°C
Undervoltage 20V
Overvoltage 80V
The supply terminals are not isolated from the control terminals.
The supply must either be isolated, or have its negative pole grounded.
WARNING
Mini Maestro User Guide 5
Issue Number: 5 www.controltechniques.com
Output ratings
Model Nominal current Peak current
DCD60x3/6 1 to 3 A 6A for 2 sec.
DCD60x7/14 2 to 7 A 14A for 2 sec.
DCD60x10/20 3 to 10 A 20A for 2 sec.
DCD60x14/28 5 to 14 A 28A for 2 sec.
The peak current can be adjusted from 50% to 100% using the RIP resistor mounted on
SK1.
NOTE
The nominal current can be adjusted in the range shown using the RIN resistor mounted
on SK1.
NOTE
6 Mini Maestro User Guide
www.controltechniques.com Issue Number: 5
2 Mechanical Installation
2.1 Dimensions of the drive
Figure 2-1 Overall dimensions of the drive
2.2 Mounting location
The drive is contained on a Eurocard circuit board having a 64-pin DIN connector. Two
installation kits allow for installation as follows:
The ingress protection rating of the drive is IP00. When greater protection is required,
install the drive in a cabinet.
Choose a location that is free from excessive dust, corrosive vapours, gases and all
liquids, including condensation of atmospheric moisture.
Dimensions of the drive
A 100mm 3.937in
B 160mm 6.300in
C 8mm 0.315in
D 41mm 1.614in
Electric shock risk
The heatsink on the drive is LIVE. Switch off the supply and wait at least 10 seconds
before touching any part of the drive.
WARNING
Installation kit Part number Installation
3MB 7500 - 0009 Standard 19 inch rack
2MH 7500 - 0008 Panel mounting
Mini Maestro User Guide 7
Issue Number: 5 www.controltechniques.com
If condensation is likely to occur when the drive is not in use, install an anticondensation heater. This heater must be switched off when the drive is in use;
automatic switching is recommended.
Install the drive so that the heatsink fins are vertical for best flow of cooling air.
Observe the requirements for ambient temperature if the drive is to be mounted directly
above any heat generating equipment (such as another drive). When the ambient
temperature exceeds 50°C (120°F), the output power of the drive must be derated. The
drive has over-temperature protection which trips the drive when the heatsink reaches
100°C (212°F).
Figure 2-2 Derating the maximum output current with temperature
If the drive is to be installed directly beneath other equipment (such as another Variable
Speed drive), ensure the drive does not cause the ambient temperature requirements of
the equipment to be exceeded.
Leave adequate clearance around the drive to allow unimpeded airflow to the heatsink.
For model DCD60x14/28, apply forced cooling using a fan and cabinet of adequate
size.
The total power dissipated as heat from a drive, choke, transformer and heatsink is 10%
to 15% of the motor power.
8 Mini Maestro User Guide
www.controltechniques.com Issue Number: 5
Figure 2-3 Dimensions of 3MB rack-mount installation kit
Dimension mm in
a 40 1.575
b 26 1.024
c 7 0.276
d 8 0.315
e 130 5.118
f 20 0.787
Mini Maestro User Guide 9
Issue Number: 5 www.controltechniques.com
Figure 2-4 Dimensions of 2MH panel-mounting installation kit
2.3 Choke (optional)
When a motor has an inductance less than 1mH, a choke must be connected between
the motor and drive, and as close as possible to the drive. Refer to Figure 2-5 for
dimensions of the choke.
Dimension mm in
a 66 2.598
b 15 0.591
c 8 0.315
d 132 5.197
e 5 0.197
Model Choke Choke rating
DCD60x3/6
DCD60x7/14
L11 0.7mH, 8A
DCD60x10/20
DCD60x14/28
L12 1mH, 14A
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