Meggitt vibro-meter SpeedSys300 ODS301 User manual

Meggitt SA, Route de Moncor 4, Case postale, 1701 Fribourg, Switzerland Tel: [phone]
Fax: [phone]
[e-mail]
www.meggittsensing.com/energy
www.meggitt.com
USER MANUAL
Title page
SpeedSys300 ODS301
overspeed detection system (ODS)
This document contains important
information about products that
are intended for use in potentially
explosive atmospheres and/or
safety-related applications.
Ex
Document reference MAODS301/E
Edition 4 – May 2022

USER MANUAL Document reference MAODS301/E
SpeedSys300 ODS301 overspeed detection system Edition 4 - May 2022
ii
REVISION RECORD SHEET
Edition Date
of issue
Written by /
modified by Description Signature
1 03.05.2021 Peter Ward Original edition. PW
2 25.06.2021 Peter Ward
Updated Figure 1-2, notably to include the bridge
(short-circuit) required on the magnetic sensor input.
Also updated the connector pinouts in 2.2 SpeedSys300
ODS301 module connectors (for consistency with the
labelling used by the updated Figure 1-2).
Changed the safety symbols in 3.2.12 Safety instructions –
potentially explosive atmospheres to “STOP” WARNINGs
(were “!” CAUTIONs).
Updated Appendix B: ATEX certifications:
Updated IBExU 20 ATEX 1157 (SpeedSys300 ODS301).
Updated Appendix F: SpeedSys300 ODS301 Modbus
register definitions to include some changes to Modbus
register definitions, notably he Modbus registers at
addresses: 0012,0108, 0563-0568, 3024, 4008,
4016-4019, 4500, 4512, 5026, 5046-5055, 5516-5554,
5638-5640 and 6004-6006. Also reformatted the tables
(Table F-xx) to improve readability.
PW
3 02.12.2021 Peter Ward
Updated the Interface diagram and connector pinouts
related to the power supply inputs and the serial
communications interface to use instrument earth /
GND (IE). See Figure 1-2, Ta ble 2-7 , Table 2 -8 and
Table 2-13.
Updated 3.2.2 Power supply and 3.2.3 Grounding, and
added 3.2.4 Shielding, in order to clarify power supply,
grounding and shielding requirements as per the technical
note (TN_SSY-20210729-1). Also added 3.2.8 Sensor /
input channel interface circuitry.
Updated Table 3-12 to correct 2oo3 voting logic using
safety relay 2 of SpeedSys300 ODS301 modules.
Pins B22 and B23 (safety relay 2) are now used instead of
the incorrect pins B18 and B19 (safety relay 1).
Added specifications for the SpeedSys300 ODS301
module’s screw-terminal connectors (see Tabl e 3 -1 3 ).
Added new information on SpeedSys300 software
language files in order to clarify their use.
See 4.2.1 Language pack files.
Updated 4.5.4 Example configuration files to include all
configuration files (*.ssy) included with the SpeedSys300
software.
Updated 4.6.1 Changing the Admin access level password
to include information on permitted passwords.
Updated 5.5.1 Diagnostics tab – Diagnostics to include
information on the recommended configuration of the
“Analog output readback difference” as per the service
bulletin (FSB_SSY-20210714-1).
Added 7 Electrical connections in order to provide a more
detailed wiring diagram for a typical SpeedSys300 ODS301
overspeed detection system (ODS) using a TQ9xx-based
proximity measurement chain.
…
PW

Document reference MAODS301/E USER MANUAL
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iii
The duly signed master copy of this page is stored by the Technical publications department of Meggitt SA
and can be obtained by writing to Technical publications.
3
(cont.) 02.12.2021 Peter Ward
…
Updated Appendix B: ATEX certifications:
Updated IBExU 20 ATEX 1157 (SpeedSys300 ODS301).
Updated Appendix C: IECEx certifications:
Updated IECEx IBE 20.0045 (SpeedSys300 ODS301).
Updated Appendix D: Frequently asked questions (FAQ) to
include two new FAQs. See D.7 I am seeing a “Slave
communication error” message. What should I check? and
D.8 I am seeing a “Relays PST failed” message. What
should I check?
PW
4 09.05.2022 Peter Ward
Updated 7 Electrical connections to use the latest electrical
diagrams (see Figure 7-1 and Figure 7-2).
Updated the Energy product return procedure and form to
be consistent with the Meggitt vibro-meter® Energy website
(see 10 Service and support).
PW
Department Name Date Signature
Technical content
approved by
ATEX Manager Pascal Kornatko 09.05.2022 PK
Product Line Management Michaël Hafner 09.05.2022 MH
Document released by Technical Publications Peter Ward 09.05.2022 PW
Edition Date
of issue
Written by /
modified by Description Signature

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iv
Important notices
IMPORTANT NOTICES
All statements, technical information, and recommendations in this document which relate to the products supplied
by Meggitt vibro-meter® (Meggitt SA) are based on information believed to be reliable, but unless otherwise
expressly agreed in writing with Meggitt SA the accuracy or completeness of such data is not guaranteed. Before
using this product, you must evaluate it and determine if it is suitable for your intended application. You should also
check our website at www.meggittsensing.com/energy for any updates to data sheets, Ex certificates, product
drawings, user manuals, service bulletins and/or other instructions affecting the product.
Unless otherwise expressly agreed in writing with Meggitt SA, you assume all risks and liability associated with use
of the product. Meggitt SA takes no responsibility for any statements related to the product which are not contained
in a current English language Meggitt SA publication, nor for any statements contained in extracts, summaries,
translations or any other documents not authored and produced by Meggitt SA.
The certifications and warranties applicable to the products supplied by Meggitt SA are valid only for new products
purchased directly from Meggitt SA or from an authorised distributor of Meggitt SA.
Meggitt SA reserves the right to alter any part of this publication without prior notice.
EXPORT CONTROL
The information contained in this document may be subject to export control regulations of the European
Community, USA or other countries. Each recipient of this document is responsible for ensuring that the transfer or
use of any information contained in this document complies with all relevant export control regulations. ECN N/A.
COPYRIGHT
Copyright© 2021-2022 Meggitt SA.
All rights reserved.
Published and printed by Meggitt SA in Fribourg, Switzerland.
The names of actual companies and products mentioned
herein may be the trademarks of their respective owners.
The information contained in this document is subject to change without notice.
This information shall not be used, duplicated or disclosed, in whole or in part,
without the express written permission of Meggitt SA (Meggitt vibro-meter®).

Document reference MAODS301/E USER MANUAL
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PREFACE
About this manual
This manual provides information on the SpeedSys300 ODS301 overspeed detection system
(ODS), from Meggitt’s vibro-meter® product line.
It offers information concerning the installation, configuration and general use of systems
using ODS301 modules for overspeed, underspeed and/or acceleration detection and
protection applications.
About Meggitt and vibro-meter®
Meggitt PLC is a global engineering group, headquartered in the UK, specialising in the
design and manufacture of high-performance components and systems for aerospace and
energy markets.
The Meggitt facility in Fribourg, Switzerland, operates as the legal entity Meggitt SA (formerly
Vibro-Meter SA). vibro-meter® is a product line of Meggitt that applies our core sensing and
monitoring technologies to power generation, oil & gas and other industrial markets.
Meggitt SA produces a wide range of vibration, dynamic pressure, proximity, air-gap and
other sensors capable of operation in extreme environments, electronic monitoring and
protection systems, and innovative software for aerospace and land-based turbomachinery.
vibro-meter® products and solutions have been at the forefront of sensing and monitoring for
more than 65 years and help keep machinery and equipment working safely, reliably and
efficiently. This includes the SpeedSys300 ODS301 overspeed detection system (ODS)
produced for the Meggitt vibro-meter® product line.
To learn more about Meggitt Switzerland, our proud tradition of innovation and excellence,
and our solutions for energy markets and applications, visit the Meggitt vibro-meter® Energy
website at www.meggittsensing.com/energy

USER MANUAL Document reference MAODS301/E
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Who should use this manual?
This manual is intended for qualified personnel such as designers and operators of
monitoring/control and/or protection systems in safety-related applications that use a
SpeedSys300 ODS301 overspeed detection system (ODS).
NOTE: Personnel involved in the design, installation, operation and maintenance of
Meggitt vibro-meter® systems are assumed to have the necessary technical
training in safety, reliability, electronics and/or mechanical engineering
(professional certificate/diploma or equivalent) to enable them to design, install,
configure, use and/or maintain such systems correctly and safely.
Adhere to the instructions!
The procedures described in this manual should be strictly adhered to in order to ensure that
SpeedSys300 ODS301 overspeed detection system (ODS) modules and their associated
equipment are properly installed. This ensures that measurement signals are reliable and
systems function as intended.
The user should adhere to general safety procedures as well as general and specific machine
constructor guidelines and instructions.
Limitations of this document
Not all mounting and connecting possibilities are described in this manual. Nevertheless,
several specific configurations are described in detail. These can often be adapted to specific
applications (contact your local Meggitt representative or Meggitt SA for further information).

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Related documentation
Further information on products can be found in their corresponding data sheets, which are
available from our website at www.meggittsensing.com/energy or can be obtained from your
local Meggitt representative.
For further information on the SpeedSys300 ODS301 overspeed detection system (ODS),
refer to the following Meggitt vibro-meter® documentation:
•SpeedSys300 ODS301 overspeed detection system data sheet
(document reference DS 660-020-070-203A).
Operators of safety-related systems using the SpeedSys300 ODS301 overspeed detection
system (ODS) should also refer to the following document:
•SpeedSys300 ODS301 overspeed detection system safety manual
(document reference MAODS301-FS/E).
NOTE: To ensure that the latest version of documentation is being used, visit the
Meggitt vibro-meter® Energy website at www.meggittsensing.com/energy and
check for any updates. Alternatively, contact your local Meggitt representative.
USE OF A SPEEDSYS300 ODS301 OVERSPEED DETECTION SYSTEM (ODS) IN A
SAFETY-RELATED APPLICATION ASSUMES THAT THE INSTRUCTIONS AND
RECOMMENDATIONS IN THE SPEEDSYS300 ODS301 OVERSPEED DETECTION SYSTEM
(ODS) SAFETY MANUAL ARE IMPLEMENTED AS APPROPRIATE BY THE END USER.
FAILURE TO FOLLOW THE INSTRUCTIONS AND IMPLEMENT THE RECOMMENDATIONS IN
THE SAFETY MANUAL MIGHT RESULT IN INJURY TO THE OPERATOR AND/OR THIRD
PARTIES, AND/OR RESULT IN DAMAGE TO EQUIPMENT AND WILL INVALIDATE ANY
WARRANTY.

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THIS PAGE INTENTIONALLY LEFT BLANK

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SAFETY
Symbols and styles used in this manual
The following symbols are used in this manual where appropriate:
NOTE: This is an example of the NOTE paragraph style. This draws the operator’s
attention to complementary information or advice relating to the subject being
treated.
The WARNING safety symbol
THIS INTRODUCES DIRECTIVES, PROCEDURES OR PRECAUTIONARY MEASURES WHICH
MUST BE EXECUTED OR FOLLOWED. FAILURE TO OBEY A WARNING MIGHT RESULT IN
INJURY TO THE OPERATOR AND/OR THIRD PARTIES, AND/OR RESULT IN DAMAGE TO
EQUIPMENT.
The CAUTION safety symbol
This draws the operator's attention to information, directives or procedures
which must be executed or followed. Failure to obey a caution can result in
damage to equipment.
The ELECTROSTATIC SENSITIVE DEVICE symbol
This indicates that the device or system being handled can be damaged by
electrostatic discharges. See Handling precautions for electrostatic
sensitive devices on page xii for further information.
Direct current Signal 0 V (ground) terminal
Alternating current Class II equipment
Direct and alternating current Caution, general danger
Earth (ground) terminal Caution, possibility of electric
shock
Protective conductor (ground)
terminal Caution, hot surface
Frame or chassis (ground)
terminal

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x
Equipment installed in potentially explosive atmospheres
Important remarks on safety-related applications
Important remarks on safety
Every effort has been made to include specific safety-related procedures in this manual using
the symbols described above. However, operating personnel are expected to follow all
generally accepted safety procedures.
All personnel who are liable to operate the equipment described in this manual should be
trained in the correct safety procedures.
THIS MANUAL COVERS EQUIPMENT THAT CAN BE CONNECTED TO PRODUCTS USED IN
POTENTIALLY EXPLOSIVE ATMOSPHERES (HAZARDOUS AREAS), AS WELL AS
EQUIPMENT THAT IS SUITABLE FOR ORDINARY APPLICATIONS (NON-EXPLOSIVE
ATMOSPHERES) ONLY.
TO ENSURE THAT THE EQUIPMENT CAN BE SAFELY CONNECTED TO PRODUCTS USED IN
POTENTIALLY EXPLOSIVE ATMOSPHERES (EXZONES), IT IS ESSENTIAL TO:
•V
ERIFY THAT IT HAS THE SPECIAL MARKING DESCRIBED IN THE EX CERTIFICATES
FOR THE PRODUCT.
•A
DHERE TO THE CRITERIA DEFINED IN THE SAME EX CERTIFICATES.
AN “X” PLACED AFTER AN EX CERTIFICATE NUMBER IS USED TO INDICATE EQUIPMENT
THAT IS SUBJECT TO SPECIFIC CONDITIONS OF USE (SPECIAL CONDITIONS FOR SAFE
USE), WHICH ARE SPECIFIED IN THE CERTIFICATE. A “U” PLACED AFTER AN EX
CERTIFICATE NUMBER IS USED TO INDICATE COMPONENTS THAT ARE SUBJECT TO A
SCHEDULE OF LIMITATIONS, WHICH ARE SPECIFIED IN THE CERTIFICATE.
FOR FURTHER INFORMATION, SEE THE EX CERTIFICATES IN THE APPENDICES OF THIS
MANUAL. (THE EX CERTIFICATES ARE ALSO AVAILABLE FROM OUR WEBSITE AT
WWW.MEGGITTSENSING.COM/ENERGY)
SEE ALSO 8MAINTENANCE.
USE OF A SPEEDSYS300 ODS301 OVERSPEED DETECTION SYSTEM (ODS) IN
SAFETY-RELATED APPLICATIONS (FUNCTIONAL-SAFETY CONTEXTS) ASSUMES THAT
THE INSTRUCTIONS AND RECOMMENDATIONS IN THIS MANUAL ARE IMPLEMENTED AS
APPROPRIATE BY THE END USER.
FAILURE TO FOLLOW THE INSTRUCTIONS AND IMPLEMENT THE RECOMMENDATIONS IN
THIS MANUAL MIGHT RESULT IN INJURY TO THE OPERATOR AND/OR THIRD PARTIES,
AND/OR RESULT IN DAMAGE TO EQUIPMENT AND WILL INVALIDATE ANY WARRANTY.
FAILURE TO FOLLOW THE INSTRUCTIONS AND IMPLEMENT THE RECOMMENDATIONS IN
THIS MANUAL MIGHT RESULT IN INJURY TO THE OPERATOR AND/OR THIRD PARTIES,
AND/OR RESULT IN DAMAGE TO EQUIPMENT AND WILL INVALIDATE ANY WARRANTY.
Read this manual carefully and observe the safety instructions before
installing and using the equipment described.
By doing this, you will be aware of the potential hazards and be able to work
safely, ensuring your own protection and also that of the equipment.

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Meggitt does not accept any liability for injury or material damage caused by failure to obey
any safety-related instructions or due to any modification, transformation or repair carried out
on the equipment without written permission from Meggitt SA. Any modification,
transformation or repair carried out on the equipment without written permission from
Meggitt SA will invalidate any warranty.
Electrical safety and installation
General handling precautions
Meggitt’s vibro-meter® ODS301 modules are rugged devices which can withstand a certain
amount of careless handling. Nevertheless, certain precautions should be taken.
• Do not drop the module onto a hard surface or subject it to violent shocks.
• Protect the module using suitable protective materials when it is being handled, stored
or transported. Remove all protective materials before installation and use of the product.
• When storing and using the equipment, adhere to the environmental specifications
(temperature, humidity) quoted in the appropriate data sheet.
• See also the Handling precautions for electrostatic sensitive devices on pagexii.
WHEN INSTALLING A SPEEDSYS300 ODS301 OVERSPEED DETECTION SYSTEM
(ODS), OBSERVE ALL SAFETY (WARNING AND CAUTION) STATEMENTS IN THIS MANUAL
AND FOLLOW ALL NATIONAL AND LOCAL ELECTRICAL CODES.
ONLY TRAINED AND QUALIFIED PERSONNEL (SUCH AS A QUALIFIED/LICENSED
ELECTRICIAN) SHOULD BE ALLOWED TO INSTALL OR REPLACE THIS EQUIPMENT.
CHECK NATIONAL AND LOCAL ELECTRICAL CODES, REGULATIONS AND DIRECTIVES
BEFORE WIRING.
ANY INDUSTRIAL HOUSING, FIELD CABINET (CUBICLE) OR OTHER SUITABLE
ENCLOSURE THAT SPEEDSYS300 ODS301 MODULES ARE INSTALLED IN MUST BE
DIRECTLY AND PERMANENTLY CONNECTED TO LIVE EARTH (PE), KNOWN AS AN
EQUIPMENT GROUNDING CONDUCTOR IN THE US NATIONAL ELECTRICAL CODE, IN
ORDER TO HELP PREVENT THE RISK OF ELECTRIC SHOCK.
SELECT CABLE WIRE SIZES AND CONNECTORS (CURRENT-CARRYING CAPACITY),
INCLUDING THE EXTERNAL MAINS POWER SUPPLY LEAD (POWER CORD), TO MEET THE
REQUIREMENTS OF THE APPLICATION IN ACCORDANCE WITH THE APPLICABLE
NATIONAL AND LOCAL ELECTRICAL CODES.
CHECKS TO ENSURE ELECTRICAL SAFETY SHOULD BE CARRIED OUT BY A COMPETENT
PERSON.
FAILURE TO FOLLOW THESE INSTRUCTIONS CAN RESULT IN DEATH, SERIOUS INJURY,
AND/OR EQUIPMENT DAMAGE.
Read the following recommendations carefully before handling ODS301
modules.

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Handling precautions for electrostatic sensitive devices
Certain devices used in electronic equipment can be damaged by electrostatic discharges
resulting from built-up static electricity. Because of this, special precautions must be taken to
minimise or eliminate the possibility of these electrostatic discharges occurring.
• Before handling electronic circuits, discharge the static electricity from your body by
touching and momentarily holding a grounded metal object (such as a pipe or cabinet).
• Avoid the build-up of static electricity on your body by not wearing synthetic clothing
material, as these tend to generate and store static electric charges. Cotton or cotton
blend materials are preferred because they do not store static electric charges.
• Do not handle electronic circuits unless it is absolutely necessary. Only hold
modules/cards by their handles or panels.
• Do not touch printed circuit boards, their connectors or their components with conductive
devices or with your hands.
• Put the electronic circuit, printed circuit board or module containing electronic
components into an antistatic protective bag immediately after removing it from a system.
Replacement parts and accessories
For information on replacement parts and accessories:
• Visit the Meggitt vibro-meter® website at www.meggittsensing.com/energy
• Contact your local Meggitt representative.
Read the following recommendations carefully before handling electronic
circuits, printed circuit boards or modules containing electronic
components.
Use only approved replacement parts and accessories.
Do not connect with incompatible products or accessories.
Only use replacement parts and accessories intended for use with
SpeedSys300 ODS301 overspeed detection systems that have been
approved by Meggitt SA.
Using incompatible replacement parts and accessories could be
dangerous and may damage the equipment or result in injury.

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TABLE OF CONTENTS
TITLE PAGE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . i
REVISION RECORD SHEET . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ii
IMPORTANT NOTICES. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . iv
PREFACE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . v
SAFETY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ix
TABLE OF CONTENTS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xiii
1 INTRODUCTION TO THE SPEEDSYS300 ODS301 OVERSPEED DETECTION
SYSTEM. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1
1.1 System overview. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1
1.1.1 Introduction. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1
1.1.2 SIL safety . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-4
1.1.3 Safety related and non-safety related functionality. . . . . . . . . . . . . . . . . . . 1-4
1.1.4 Software . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-5
1.2 Applications information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-5
1.2.1 Applications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-5
1.2.2 Intended use. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-5
1.3 Parts and accessories. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-6
1.4 Environmental conditions/specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-6
2 OVERVIEW OF THE SPEEDSYS300 ODS301 MODULE HARDWARE . . . . . . . . . . . . 2-1
2.1 SpeedSys300 ODS301 module LEDs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1
2.2 SpeedSys300 ODS301 module connectors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-3
2.2.1 Removing and inserting screw-terminal connectors. . . . . . . . . . . . . . . . . 2-13

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3 INSTALLATION OF A SPEEDSYS300 ODS301 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1
3.1 Module details . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1
3.2 Installation considerations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-2
3.2.1 Ventilation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-2
3.2.2 Power supply. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-3
3.2.3 Grounding . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-4
3.2.4 Shielding . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-5
3.2.5 Voting logic . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-7
3.2.5.1 1oo2 voting. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-8
3.2.5.2 2oo2 voting. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-11
3.2.5.3 2oo3 voting. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-13
3.2.6 Electrical connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-16
3.2.7 Installations in hazardous areas . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-16
3.2.8 Sensor / input channel interface circuitry . . . . . . . . . . . . . . . . . . . . . . . . . 3-17
3.2.9 Electrical interfaces . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-18
3.2.10 General wiring diagram. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-19
3.2.11 Safety instructions – safety-related applications . . . . . . . . . . . . . . . . . . . . 3-20
3.2.12 Safety instructions – potentially explosive atmospheres. . . . . . . . . . . . . . 3-20
3.2.12.1 Category (1) G equipment . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-20
3.2.12.2 Category (1) D equipment . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-20
3.3 Installing a module . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-21
3.3.1 Mounting procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-21
3.3.1.1 Mounting on a DIN rail . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-22
3.3.1.2 Removing from a DIN rail . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-22
4 CONFIGURATION OF A SPEEDSYS300 ODS301 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1
4.1 Software . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1
4.1.1 Software versions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1
4.1.2 Computer system requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1
4.2 Software installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1
4.2.1 Language pack files . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1
4.3 Software user interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-2
4.4 Getting started. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-2
4.5 Module configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-6
4.5.1 Reading a module’s configuration. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-6
4.5.2 Loading and saving configuration files . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-6

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4.5.3 Activating a configuration on a module. . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-6
4.5.4 Example configuration files. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-7
4.6 Access levels/permissions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-7
4.6.1 Changing the Admin access level password . . . . . . . . . . . . . . . . . . . . . . . 4-8
5 COMMISSIONING OF A SPEEDSYS300 ODS301. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-1
5.1 Configuration parameters and settings. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-1
5.2 Device tab. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-2
5.2.1 Device tab – Configuration user . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-2
5.2.2 Device tab – Configuration admin . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-3
5.2.3 Device tab – Password admin . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-3
5.3 Measurement tab . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-4
5.3.1 Measurement tab – Measurement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-4
5.3.2 Measurement tab – Advanced settings . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-5
5.4 Output tab . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-7
5.4.1 Output tab – Digital outputs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-7
5.4.2 Output tab – Analog output. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-9
5.5 Diagnostics tab . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-10
5.5.1 Diagnostics tab – Diagnostics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-10
5.6 Process data tab. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-12
5.6.1 Process tab – Process data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-12
5.6.2 Process tab – Digital outputs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-13
5.6.3 Process tab – Speed plot . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-13
5.7 Device status tab . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-14
5.7.1 Device status tab – Diagnostic data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-14
5.7.2 Device status tab – Error status . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-15
5.8 Report tab . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-16
5.8.1 Report tab – Content . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-16
5.9 Event log tab. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-17
5.9.1 Event log tab. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-17
5.10 Programming parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-19
6 MODBUS COMMUNICATIONS WITH A SPEEDSYS300 ODS301 . . . . . . . . . . . . . . . . 6-1
6.1 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-1
6.2 Modbus . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-2
6.2.1 Modbus RTU . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-2
6.3 Modbus register definitions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-3

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7 ELECTRICAL CONNECTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-5
7.1 General precautions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-5
7.2 General wiring diagrams with a TQ9xx-based proximity measurement chain
as the input . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-5
8 MAINTENANCE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-1
8.1 General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-1
8.2 Requirements for equipment used in potentially explosive atmospheres . . . . . . . . 8-1
8.3 Cleaning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-1
9 END-OF-LIFE PRODUCT DISPOSAL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-1
10 SERVICE AND SUPPORT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-1
10.1 Contacting us . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-1
10.2 Technical support . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-1
10.3 Sales and repairs support . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-1
10.4 Customer feedback . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-2
Energy product return form. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-4
Energy customer feedback form. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-8
A APPENDIX A: ENVIRONMENTAL SPECIFICATIONS . . . . . . . . . . . . . . . . . . . . . . . . . .A-1
B APPENDIX B: ATEX CERTIFICATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . B-1
C APPENDIX C: IECEx CERTIFICATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .C-1
D APPENDIX D: FREQUENTLY ASKED QUESTIONS (FAQ). . . . . . . . . . . . . . . . . . . . . . D-1
D.1 The SpeedSys300 software cannot communicate with my SpeedSys300
ODS301 module. What do I need to check? . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .D-1
D.2 How do I use a Meggitt vibro-meter TQxxx/IQSxxx proximity measurement
chain as the sensor input to a SpeedSys300 ODS301 module? . . . . . . . . . . . . . . D-3
D.3 The Error LED on the front panel of the SpeedSys300 ODS301 module is
showing RED. How do I determine the problem? . . . . . . . . . . . . . . . . . . . . . . . . . .D-5
D.4 I am changing/programming the configuration of my SpeedSys300 ODS301
module but am not seeing the expected changes. What is wrong? . . . . . . . . . . . .D-6
D.5 I am getting an “Analog output readback error” message even though I am
not using this output/signal in my application. Why is this?. . . . . . . . . . . . . . . . . . . D-7
D.6 I am using the frequency (speed) output but cannot see an output signal.
What should I check? . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . D-8
D.7 I am seeing a “Slave communication error” message. What should I check?. . . . . D-9
D.8 I am seeing a “Relays PST failed” message. What should I check?. . . . . . . . . . . .D-9

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E APPENDIX E: SPEEDSYS300 ODS301 DIAGNOSTIC ERROR CODES . . . . . . . . . . . E-1
E.1 Error codes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . E-1
F APPENDIX F: SPEEDSYS300 ODS301 MODBUS REGISTER DEFINITIONS . . . . . . . F-1
F.1 Status and diagnostics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . F-1
F.1.1 Main status . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . F-1
F.1.2 Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . F-4
F.1.3 Current values . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . F-5
F.1.4 Diagnostics data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . F-8
F.1.5 Slave communication status. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . F-11
F.2 Parameters and configuration settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . F-13
F.2.1 Admin password. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . F-13
F.2.2 Device configuration – user . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . F-13
F.2.3 Device configuration – admin . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . F-14
F.2.4 Device configuration – factory . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . F-15
F.2.5 Measurement configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . F-15
F.2.6 Diagnostics configuration – admin . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . F-17
F.2.7 Diagnostics configuration – factory. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . F-19
F.2.8 Output configuration – admin . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . F-22
F.2.9 Output configuration – factory . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . F-27

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Document reference MAODS301/E USER MANUAL
Edition 4 - May 2022 SpeedSys300 ODS301 overspeed detection system
1-1
System overview
INTRODUCTION TO THE SPEEDSYS300 ODS301 OVERSPEED DETECTION SYSTEM
1 INTRODUCTION TO THE SPEEDSYS300 ODS301
OVERSPEED DETECTION SYSTEM
This section provides an overview of the SpeedSys300 ODS301 overspeed detection system
(ODS).
1.1 System overview
1.1.1 Introduction
The SpeedSys300 ODS301 overspeed detection system (ODS) system is an overspeed
detection and protection system with additional monitoring from Meggitt’s vibro-meter®
product line.
It is a dedicated safety system for critical rotating machinery, designed using the latest
technology and standards for one main purpose – to accurately detect overspeed,
underspeed and/or acceleration in order to shutdown a machine and protect plant and
personnel.
Figure 1-1 illustrates the SpeedSys300 ODS301 module hardware.
Figure 1-1: SpeedSys300 ODS301 module – three-quarter view

USER MANUAL Document reference MAODS301/E
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System overview
INTRODUCTION TO THE SPEEDSYS300 ODS301 OVERSPEED DETECTION SYSTEM
The SpeedSys300 ODS301 overspeed detection system is a fundamentally simple and
highly robust system, designed for ease of use and reliable operation, with an exceptionally
long proof-test interval of typically 10 years.
In operation, a shaft with a multi-toothed speed sensing surface, known as a speed wheel, is
monitored by an industry-standard proximity, electronic or magnetic speed sensor. The
sensor / measurement chain pulses (frequency) are counted by the SpeedSys300 ODS301
module and converted to a rotational speed measurement and an acceleration
measurement.
The SpeedSys300 ODS301 module then compares the speed and acceleration
measurements against the configured alarm limits, and will activate the safety relays – relay 1
and relay 2 – and additional (non-safety) relays – relay 3 and relay 4 – should a measurement
exceed a limit. In general, the safety relays are used for critical alarms and the additional
relays are used for non-critical alarms or other alarm/status information for the module.
The SpeedSys300 ODS301 module also uses the measured shaft rotational speed to drive
the analogue 4 to 20 mA current loop output and update the frequency (speed) output, so that
the information can be shared with external third-party systems such as a DCS or PLC, or
even a simple display.
NOTE: The safety relays – relay 1 and relay 2 – and the analog output (4 to 20 mA) are
safety outputs. More specifically, they are SIL certified and can be used for critical
functions in machinery protection applications, such as initiating the shutdown (trip)
of a machine.
Figure 1-1 illustrates the SpeedSys300 ODS301 module’s hardware interfaces.