Eurotherm Drives 591+ User manual
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All rights strictly reserved. No part of this document may be stored in a retrieval system, or transmitted in any form or
by any means to persons not employed by a Eurotherm group company without written permission from Eurotherm
Drives Ltd.
Although every effort has been taken to ensure the accuracy of this document it may be necessary, without notice, to
make amendments or correct omissions. Eurotherm Drives cannot accept responsibility for damage, injury, or expenses
resulting therefrom.
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Eurotherm Drives warrants the goods against defects in design, materials and workmanship
for the period of 12 months from the date of delivery on the terms
detailed in Eurotherm Drives Standard Conditions of Sale IA058393C.
Eurotherm Drives reserves the right to change the content and product specification without notice.
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This manual is to be made available to all persons who are required to install, configure or
service equipment described herein, or any other associated operation.
The information given is intended to highlight safety issues, and to enable the user to obtain
maximum benefit from the equipment.
Complete the following table for future reference detailing how the unit is to be installed and
used.
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Serial Number
(see product label)
Where installed
(for your own
information)
Unit used as a:
(refer to Certification
for the Converter)
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Unit fitted: RWall-mounted ;Enclosure
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The equipment described is intended for industrial (non consumer) motor speed control utilising
dc shunt machines.
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Installation, operation and maintenance of the equipment should be carried out by qualified
personnel. A qualified person is someone who is technically competent and familiar with all
safety information and established safety practices; with the installation process, operation and
maintenance of this equipment; and with all the hazards involved.
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• The equipment must be permanently earthed due to the high earth leakage current.
• The drive motor must be connected to an appropriate safety earth.
• Before working on the equipment, ensure isolation of the mains supply from terminals L1,
L2 and L3.
• Never perform high voltage resistance checks on the wiring without first disconnecting the
drive from the circuit being tested.
• When replacing a drive in an application and before returning to use, it is essential that all
user defined parameters for the product’s operation are correctly installed.
• This equipment contains electrostatic discharge (ESD) sensitive parts. Observe static
control precautions when handling, installing and servicing this product.
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The specifications, processes and circuitry described herein are for guidance only and may need
to be adapted to the user’s specific application.
Eurotherm Drives does not guarantee the suitability of the equipment described in this Manual
for individual applications.
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Under fault conditions, power loss or other operating conditions not intended, the equipment
may not operate as specified. In particular:
• The motor speed may not be controlled
• The direction of rotation of the motor may not be controlled
• The motor may be energised
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The user must provide guarding and /or additional safety systems to prevent risk of injury and
electric shock.
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• All control and signal terminals are SELV, i.e. protected by double insulation. Ensure all
wiring is rated for the highest system voltage.
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• All exposed metalwork in the Converter is protected by basic insulation and bonding to a
safety earth.
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These are not recommended for use with this product but ,where their use is mandatory, only
Type B RCDs should be used.
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The 590+ Series Converter is designed for use in a suitable enclosure, with associated control
equipment. The unit accepts a variety of standard three-phase ac supply voltages depending upon
the model, and is suitable for the powering of DC shunt field and permanent magnet motors,
providing controlled dc output voltage and current for armature and field.
All units are designed for simple and economical panel mounting using keyhole slots. Plug-in
control connectors simplify the fitting and removal of the unit to the panel.
Where possible, standard parts are used throughout the range thereby reducing the variety of
spare parts required to maintain a multi-drive system. For example, the same basic control boards
are used in all types of three-phase armature controller regardless of horsepower or bridge
configuration.
The control circuit is totally isolated from the power circuit thus simplifying the interconnection
of controllers within a system and improving operator safety. The coding circuitry adjusts
automatically to accept supply frequencies between 45-65Hz and possesses high immunity to
supply-borne interference. The armature controllers are phase rotation insensitive.
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The Converter is controlled by a 16 bit Microcontroller providing advanced features such as:
• Complex control algorithms which are not achievable by simple analog techniques.
• Software-configurable control circuitry built around standard software blocks.
• Serial link communications with other drives or a PC for advanced process systems.
The Operator Station gives access to parameters, diagnostic messages, trip settings and full
application programming.
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The motor armature controllers include both regenerative and non-regenerative models:
• Regenerative controllers consist of two fully-controlled thyristor bridges and a field bridge
with full transient and overload protection, together with sophisticated electronic control of
acceleration and deceleration, speed and torque in both directions of rotation.
• Non-regenerative controllers consist of one fully-controlled thyristor bridge and a field
bridge with full transient and overload protection, together with its associated electronic
control circuitry, and provide accurate speed and/or torque control in one selected direction
of rotation.
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A field regulator is fitted as standard. The regulator consists of a full-wave half controlled single
phase thyristor bridge with transient and overload protection. It provides either a fixed voltage or
fixed current source, depending upon the selected mode of operation for constant torque
applications. The field current mode of operation can be further enhanced to provide field
weakening for drive control motors which require extended speed or constant horsepower
control.
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• Check for signs of transit damage
• Check the product code on the rating label conforms to your requirement.
If the unit is not being installed immediately, store the unit in a well-ventilated place away from
high temperatures, humidity, dust, or metal particles.
Refer to Chapter 2: “An Overview of the Converter” to check the rating label/product code.
Refer to Chapter 8: “Routine Maintenance and Repair” for information on returning damaged
goods.
Refer to Chapter 11: “Technical Specifications” - Environmental Details for the storage
temperature.
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Save the packaging in case of return. Improper packaging can result in transit damage.
Use a safe and suitable lifting procedure when moving the drive. Never lift the drive by its
terminal connections.
Prepare a clear, flat surface to receive the drive before attempting to move it. Do not damage any
terminal connections when putting the drive down.
Refer to Chapter 11: “Technical Specifications” - Mechanical Details for unit weights.
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This manual is intended for use by the installer, user and programmer of the 590+ Series
Converter. It assumes a reasonable level of understanding in these three disciplines.
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Enter the “Model No” from the rating label into the table at the front of this manual. There is
also a column for you to record your application’s parameter settings in the table in Chapter 10.
It is important that you pass this manual on to any new user of this unit.
This manual is for the following models from the 590+ Converter Series:
• Three phase, regenerative, four quadrant armature controllers:
590+
• Three phase non-regenerative, two quadrant armature controllers:
591+
• 590+ Door
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Use the manual to help you plan the following:
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Know your requirements:
• certification requirements, CE/UL/c-UL conformance
• conformance with local installation requirements
• supply and cabling requirements
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Know your operator:
• how is it to be operated, local and/or remote?
• what level of user is going to operate the unit?
• decide on the best menu level for the Operator Station (where supplied)
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Know your application:
• plan your “block diagram programming”
• enter a password to guard against illicit or accidental changes
• learn how to back-up your application data
• customise the Operator Station to the application
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The manual is divided into chapters and paragraphs. Page numbering restarts with every chapter,
i.e. 5-3 is Chapter 5, page 3.
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You will find this at the rear of the manual. The pages unfold to show a complete block diagram,
this will become your programming tool as you become more familiar with the software.
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In very simple terms, the Converter controls the dc motor with the use of Control Loops - an
inner Current Loop and an outer Speed Loop. These control loops can be seen in the Application
Block Diagram. The block diagram shows all the Converter’s software connections.
Using the Operator Station, you can select the control loops to be used by the Converter to
provide either:
• Current Control
• Speed Control (default)
It is usual to supply a Current or Speed Feedback signal to the appropriate loop for more
effective control of the Converter. Current Feedback sensors are built-in, whereas Speed
Feedback is provided directly from the armature sensing circuit (default), or by tachogenerator,
encoder or Microtach connection to the relevant option board.
When in Speed Control,
you can modify the
performance of the
Converter further by
controlling the motor
field, i.e. Field Control.
By weakening the field
current, you can obtain
an increase in motor
speed beyond that
normally achievable for
the rated Armature
Voltage of the dc motor.
The Converter is controlled remotely using digital/analog inputs and outputs, or locally using the
Operator Station.
By plugging in a COMMS Option Technology Box, the Converter can be linked into a network
and controlled by a PLC/SCADA or other intelligent device.
Field Current 5.7A
Voltage 200V
Speed
speed increase
due to field
weakening
armature voltage
remains constant
field current
reduced
base
speed
Armature
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&RQWURO Control Circuits Fully isolated from power circuit (SELV)
Output Control • Fully controlled 3-phase thyristor bridge
• Microprocessor implemented phase control extended
firing range
• For use on 50 or 60Hz supplies with a frequency
compliance range of 45 to 65Hz
• Phase control circuits are phase rotation insensitive
Control Action • Fully digital
• Advanced PI with fully adaptive current loops for
optimum dynamic performance
• Self Tuning Current Loop utilising "Autotune"
algorithm
• Adjustable speed PI with integral defeat
Speed Control • By Armature Voltage feedback with IR compensation
• By Encoder feedback or analog tachogenerator
Speed Range 100 to 1 typical with tachogenerator feedback
Steady State
Accuracy • 0.01 % Encoder Feedback with Digital setpoint
(serial link or P3)
• 0.1 % Analog Tach Feedback
• 2 % Voltage Feedback
• Absolute (0.0% error) using QUADRALOC Mk II
5720 Digital Controller
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Adjustments All adjustments in software can be altered by
the Operator Station or via serial communications. The
Operator Station provides monitoring and adjustment of
parameters and levels, in addition to diagnostic facilities.
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3URWHFWLRQ • High energy MOVs
• Overcurrent (instantaneous)
• Overcurrent (inverse time)
• Field failure
• Speed feedback failure
• Motor overtemperature
• Thyristor Stack overtemperature
• Thyristor "Trigger" failure
• Thyristor Snubber Network
• Zero-speed detection
• Standstill logic
• Stall protection
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'LDJQRVWLFV • Fully computerised with first fault latch and
automatic display
• Digital LCD monitoring
• Full diagnostic information available on
RS422/RS485
• LED circuit state indication
Table 2-1 Control Features
This manual suits for next models
1
Table of contents
