Alstom Reason RT431 Technical Manual
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Alstom Reason RT431 Technical Manual

Alstom Reason RT431 Technical Manual

Time code generator
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© ALSTOM 2015. All rights reserved. Information contained in this document is indicative only. No representation or warranty is given or should be relied on that it is
complete or correct or will apply to any particular project. This will depend on the technical and commercial circumstances. It is provided without liability and is subject
to change without notice. Reproduction, use or disclosure to third parties, without express written authority, is strictly prohibited.
Reason RT431
Technical Manual
Time Code Generator
Platform Hardware Version: A
Platform Software Version: 06
Publication Reference: RT431-TM-EN-6v1

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  • Page 1 Publication Reference: RT431-TM-EN-6v1 © ALSTOM 2015. All rights reserved. Information contained in this document is indicative only. No representation or warranty is given or should be relied on that it is complete or correct or will apply to any particular project. This will depend on the technical and commercial circumstances. It is provided without liability and is subject...

  • Page 2: Table Of Contents

    Contents _Toc428459090 Table of Figures List of Tables Introduction Chapter Overview Foreword Target Audience Accronyms and abbreviations Product Scope Key Features PTP / SNTP / NTP Stationary Mode Improved Stability Environmental Robustness Functional Overview Standards Compliance EMC Compliance Product Safety Protective Class Installation category Environment...
  • Page 3 Chapter Overview Unpacking Normal Use of the Equipment External Indications Mounting Power Supply GPS Antenna Terminal TTL Electrical Outputs Open-collector electrical output Serial port (RS232) Ethernet Communication Communication properties Factory default settings Network port and communication protocols Direct Communication Communication via Ethernet network Equipment access Powering Up Operation...
  • Page 4 Profile Domain number Network protocol Operation mode Delay mechanism Master and slave clocks PTP Messages Sending configuration Configuration summary Setup Configuration management Password configuration Reset GPS Almanac Stationary Mode Demo mode Log Files Reboot System Maintenance Chapter Overview Time Synchronization Failure (Locked Signaling) Locked indicator (HMI) Remote monitoring (Web Interface) IRIG-B Signal...
  • Page 5 Ethernet Port Environment Type Test Dimensions, Weight Ordering Options Chapter overview RT431 Cortec Appendixes Appendix A – IRIG-B Standard Summary Appendix B – PTP Standard Concepts (IEEE1588) Appendix C – Serial Datagrams Appendix D – GPS Antenna Delay Compensation Appendix E – Application Examples...

  • Page 6: Table Of Figures

    TABLE OF FIGURES Figure 1: Functional Overview of RT431 Figure 2: Front view of RT431 Figure 3: View of the RT431 connectors Figure 4: Serial Number, Part Number and Equipment Specifications location 40 Figure 5: Pre-insulated tubular pin terminals Figure 6: Supply connector assembly Figure 7: AC power connection Figure 8: DC power connection Figure 9: RT431 Grounding Strap...
  • Page 7 Figure 31: Section to update firmware, manipulate configurations, change key and change configuration username and password Figure 32: Section to update firmware, manipulate configurations, change key and change configuration username and password. Figure 33: Connectors of RT431 Figure 35: RT431 Dimensions Figure 36: Application Example 1 –...

  • Page 8: List Of Tables

    List of Tables Table 1: Ethernet port Table 2: Gateway and DNS Server Table 3: Communication port and protococols Table 4: Cross-over network cable pinout Table 5: RT431 IP address and network mask Table 6: Computer IP address and network mask Table 7: Factory default username and password to configure Table 8: Summary of configurable network parameters Table 9: Summary of configurable time parameters...
  • Page 9 Table 36: ACEB Datagram Information Table 37: GPZDA Datagram Time Information Table 38: GPZDA Datagram Line Feed and Carriage Return Information Table 39: GPZDA Datagram Checksum Information Table 40: Meinberg Datagram Time Information Table 41: Meinberg Datagram Beginning and End Information Table 42: Meinberg Datagram Locked State Information Table 43: Antenna cables attenuation Table 44: Attenuation of antenna cables...

  • Page 10: Introduction

    INTRODUCTION CHAPTER 1...

  • Page 11: Chapter Overview

    Chapter 1 – Introduction RT431 CHAPTER OVERVIEW This chapter provides some general information about the technical manual and an introduction to the device(s) described in this technical manual. THIS CHAPTER CONTAINS THE FOLLOWING SECTIONS:  Foreword  Product Scope  Key Features ...

  • Page 12: Foreword

    The description of principles and theory is limited to that which is necessary to understand the product. For further details on general protection engineering theory, we refer you to Alstom's publication NPAG, which is available online or from our contact centre.
  • Page 13 Chapter 1 – Introduction RT431 bps - Bits per second; CAT5 - Network Cable; CF - Federal Constitution; PLC - Programmable Logic Controller; CMOS - Complementary Metal-Oxide-Semiconductor; DB9 - Connector do type D-subminiature; DC - Direct Current; DCF77 - Time synchronization protocol Deutschland LORAN-C (Long Range Navigation - C) Frankfurt 77 (77.5 kHz);...
  • Page 14 RAIM - Receiver Autonomous Integrity Monitoring; RFC - Data formatting specification RFC 1951, DEFLATE; RJ45 - Ethernet Connector with 8 conductors; RS232/485 - Serial port levels; RT - Temporal Recorder (Alstom's Temporal Synchronization Equipment); RX - Receiving data; SNMP - Simple Network Management Protocol;...

  • Page 15: Product Scope

    Chapter 1 – Introduction RT431 PRODUCT SCOPE RT431 Time Code Generator is a compact GPS-based clock designed to be installed on a DIN rail, allowing the equipment to be installed in locations with limited space and reduced panels. Precise Time Protocol (IEE 1588 PTP) version 2 provides accurate synchronization over Ethernet networks within 100 ns accuracy, enabling applications like synchrophasors without the need to use separate IRIG-B and PPS networks.

  • Page 16: Key Features

     AC or DC power sources possibility. PTP / SNTP / NTP Reason RT431 offers the accurate PTP time protocol, which is defined by the IEEE 1588, to precisely synchronize IED’s and computers over a LAN (or VLAN). This temporal protocol is capable of syncronizing multiple clocks with a better than 100ns time accuracy on a Ethernet Network.

  • Page 17: Stationary Mode

    Chapter 1 – Introduction RT431 STATIONARY MODE In applications such as current differential protection, the equipment providing the time synchronization must be in locked state in order to keep the protection available. For this reason, the Stationary Mode allows the equipment to be in a locked state even when receiving signals from a single GPS satellite.

  • Page 18: Functional Overview

    Chapter 1 – Introduction RT431 FUNCTIONAL OVERVIEW Figure 1: Functional Overview of RT431 RT431...

  • Page 19: Standards Compliance

    Chapter 1 – Introduction RT431 STANDARDS COMPLIANCE The device has undergone a range of extensive testing and certification processes to ensure and prove compatibility with all target markets. A detailed description of these criteria can be found in the Technical Specifications chapter.

  • Page 20: Safety Information

    SAFETY INFORMATION CHAPTER 2...

  • Page 22: Chapter Overview

    Chapter 2 – Safety Information RT431 CHAPTER OVERVIEW This chapter provides information about the safe handling of the equipment. The equipment must be properly installed and handled in order to maintain it in a safe condition and to keep personnel safe at all times. You must be familiar with information contained in this chapter before unpacking, installing, commissioning, or servicing the equipment.

  • Page 23: Health And Safety

    Chapter 2 – Safety Information RT431 HEALTH AND SAFETY Personnel associated with the equipment must be familiar with the contents of this Safety Information. When electrical equipment is in operation, dangerous voltages are present in certain parts of the equipment. Improper use of the equipment and failure to observe warning notices will endanger personnel.

  • Page 24: Symbols

    Chapter 2 – Safety Information RT431 SYMBOLS Throughout this manual you will come across the following symbols. You will also see these symbols on parts of the equipment. Caution: Refer to equipment documentation. Failure to do so could result in damage to the equipment Risk of electric shock Ground terminal.

  • Page 25: Installation, Commissioning And Servicing

    Chapter 2 – Safety Information RT431 INSTALLATION, COMMISSIONING AND SERVICING LIFTING HAZARDS Many injuries are caused by: Lifting heavy objects Lifting things incorrectly Pushing or pulling heavy objects Using the same muscles repetitively Plan carefully, identify any possible hazards and determine how best to move the product. Look at other ways of moving the load to avoid manual handling.
  • Page 26 Chapter 2 – Safety Information RT431 Disconnect power before disassembling. Disassembly of the equipment may expose sensitive electronic circuitry. Take suitable precautions against electrostatic voltage discharge (ESD) to avoid damage to the equipment. NEVER look into optical fibers or optical output connections. Always use optical power meters to determine operation or signal level.

  • Page 27: Fusing Requirements

    Chapter 2 – Safety Information RT431 Avoid modification to the wiring of panel when the system is running. FUSING REQUIREMENTS A high rupture capacity (HRC) fuse type with a maximum current rating of 10 Amps and a minimum dc rating of 250 V dc may be used for the auxiliary supply (for example Red Spot type NIT or TIA).

  • Page 28: Pre-Energisation Checklist

    Chapter 2 – Safety Information RT431 Ground the equipment with the supplied PCT (Protective Conductor Terminal). Do not remove the PCT. The PCT is sometimes used to terminate cable screens. Always check the PCT’s integrity after adding or removing such ground connections. The user is responsible for ensuring the integrity of any protective conductor connections before carrying out any other actions.

  • Page 29: Peripheral Circuitry

    Chapter 2 – Safety Information RT431 PERIPHERAL CIRCUITRY Where external components such as resistors or voltage dependent resistors (VDRs) are used, these may present a risk of electric shock or burns if touched. Operation of computers and equipment connected to RT43x under environmental conditions such as temperature and humidity that exceed the conditions specified in their respective manuals can cause malfunctioning or even irreversible damage to them or the nearby installation.

  • Page 30: Lithium Battery

    Chapter 2 – Safety Information RT431 LITHIUM BATTERY A lithium battery with a self-life of at least 10 years is onboard in the equipment. The lithium battery inside the equipment is not replaceable. Please note the risk of explosion if the battery is handled incorrectly. Contact the technical support for further information.

  • Page 31: Decommissioning And Disposal

    Chapter 2 – Safety Information RT431 DECOMMISSIONING AND DISPOSAL Before decommissioning, completely isolate the equipment power supplies (both poles of any dc supply). The auxiliary supply input may have capacitors in parallel, which may still be charged. To avoid electric shock, discharge the capacitors using the external terminals before decommissioning.

  • Page 32: Hardware Design

    HARDWARE DESIGN CHAPTER 3...

  • Page 33: Chapter Overview

    Chapter 3 – Hardware Design RT431 CHAPTER OVERVIEW This chapter provides information about the product's main characteristics. THIS CHAPTER CONTAINS THE FOLLOWING SECTIONS:  Equipment View  Network Port  Power Supply RT431...

  • Page 34: Equipment View

    Chapter 3 – Hardware Design RT431 EQUIPMENT VIEW With a compact design, all the equipment connections can be access by one side. Figure 2: Front view of RT431 Figure 3: View of the RT431 connectors The RT431 comprises:  One feeding input, AC or DC; ...

  • Page 35: Network Port

    Chapter 3 – Hardware Design RT431 NETWORK PORT The network interface presents the following features depending on the equipment version: 1. Monitoration and configuration 2. NTP/SNTP synchronization protocols 3. IEEE 1588 PTP synchronization protocol RT431...

  • Page 36: Power Supply

    Chapter 3 – Hardware Design RT431 POWER SUPPLY The power supply can have the voltage ranges listed below: 1. 100-240Vac, 110-250Vdc 2. 24-48Vdc RT431...

  • Page 38: Installation

    INSTALLATION CHAPTER 4...

  • Page 39: Chapter Overview

    Chapter 4 – Installation RT431 CHAPTER OVERVIEW This chapter describes how to install this equipment. THIS CHAPTER CONTAINS THE FOLLOWING SECTIONS:  Unpacking  Mounting  Ethernet Communication  Powering Up RT431...

  • Page 40: Unpacking

    Check the contents against the packing list that goes with the product. If any of the content listed is missing, please contact Alstom (see contact information at the beginning of this manual). Examine the unit for any shipping damage. If the unit is damaged or fails to operate, notify the shipping company without delay.

  • Page 41: Mounting

    Chapter 4 – Installation RT431 MOUNTING RT431 has been designed to be mounted in a standard DIN-rail. Allow adequate clearance for all connections. For more information regarding the equipment dimensions, refer to Technical Specification chapter. POWER SUPPLY The unit can be powered on from a DC or AC power supply within the limits specified.

  • Page 42: Figure 7: Ac Power Connection

    Chapter 4 – Installation RT431 Figure 7: AC power connection For compliance with IEC 61010, install a suitable external switch or circuit breaker in the current-carrying conductor of RT431 power supply; this device shall interrupt both the hot (+/L) and neutral (-/N) power leads. An external 10 A, category C, bipolar circuit-breaker is recommended.

  • Page 43: Gps Antenna Terminal

    Chapter 4 – Installation RT431 3.1.3 GROUNDING (EARTHING) To ensure proper operation of the equipment under adverse conditions of electromagnetic compatibility, connect the equipment protective ground terminal to the panel using a copper strap of at least 10 mm wide with M6 ring lug.

  • Page 44: Figure 11: Recommended Position For Installing The Gps Antenna

    Chapter 4 – Installation RT431 Figure 11: Recommended position for installing the GPS Antenna The antenna should not be located under overhead power lines or other electric light or power circuits, or from where it can fall onto such power lines or circuits. An antenna mast of roof-mounting-kit and any supporting structure must be properly grounded to provide protection against voltage surges and built-up static charges.

  • Page 45: Ttl Electrical Outputs

    Figure 12: Recommended position for the installation of the GPS Antenna conduit Cables with lengths ranging from 15 m (50 ft) to 100 m (328 ft) can be purchased from Alstom. For use of antennas and cables from other manufacturers, contact Alstom.

  • Page 46: Open-Collector Electrical Output

    Chapter 4 – Installation RT431 Figure 13: TTL level electrical outputs More than one device can be connected in parallel from one TTL output. The maximum number of devices that can be connected to the TTL output depends on the current that each device’s input uses. As the maximum current supplied from each TTL output is 150mA, the sum of the currents from all devices connected cannot exceed this value (cable resistance shall be considered).

  • Page 47: Serial Port (Rs232)

    Chapter 4 – Installation RT431 For details on the configuration of open-collector electrical outputs, see Configuration chapter. Figure 15: Connection diagram of the open-collector electrical outputs To scale the resistor use the relationship: �� �� �� ≥ �� Where V is the external voltage to be switched by the open-collector output.
  • Page 48 Chapter 4 – Installation RT431 For serial port configuration, see Configuration chapter. For existing datagrams details, see Appendix RT431...

  • Page 49: Ethernet Communication

    Chapter 4 – Installation RT431 ETHERNET COMMUNICATION COMMUNICATION PROPERTIES RT431 has one Ethernet 10/100BaseT communication interfaces with RJ45. When a CAT5 cable with a RJ45 connector is pluged in the port, the L led will indicate that the cable is transmitting signal, and the A led blinks when there is data exchange.

  • Page 50: Network Port And Communication Protocols

    Chapter 4 – Installation RT431 The factory default settings of Gateway and DNS Server are: Table 2: Gateway and DNS Server Gateway (E 192.168.0.254 THERNET Server DNS 192.168.0.254 The E parameters can be configured through a Web Interface. For details of Ethernet ports THERNET configuration, see Configuration chapter.

  • Page 51: Figure 18: Direct Communication Architecture Using The Ethernet Electrical Port

    Chapter 4 – Installation RT431 Striped white/orange Striped white / green Blue Blue Striped white/blue Striped white/blue Orange Green Striped white/brown Striped white/brown Brown Brown Figure 18: Direct communication architecture using the Ethernet electrical port In the direct communication with the unit, it is necessary both the computer and the unit connected on the same local network.

  • Page 52: Communication Via Ethernet Network

    Chapter 4 – Installation RT431 Network mask 255.255.255.0 If the unit is not using factory default settings, use the reset button to return its configuration. After connecting the unit to the computer, see Web Interface (Remote Access) section for details about accessing the unit.

  • Page 53: Equipment Access

    Chapter 4 – Installation RT431 EQUIPMENT ACCESS A Web Interface allows configuring and monitoring the unit through a web browser, as the unit it is connected to a local network. To use all features through the Web Interface, make sure one of the web browsers below (downloadable from the internet) are installed: Internet Explorer version 7.0 or superior.

  • Page 54: Powering Up

    Chapter 4 – Installation RT431 POWERING UP Before energizing the unit, be familiarized with all the risks and attention indicators in the equipment frame.  Connect the power supply (including the ground lead) to the appropriate terminals.  The unit performs a self-test procedure, and the A indicator will remain lit.

  • Page 55: Operation

    OPERATION CHAPTER 5...

  • Page 56: Chapter Overview

    Chapter 5 – Operation RT431 CHAPTER OVERVIEW This chapter introduces the State lndicators and Remote Interface available for RT431. THIS CHAPTER CONTAINS THE FOLLOWING SECTIONS:  State Indicators  Web Interface (Remote Access)  Monitoring Menus – Web Interface RT431...

  • Page 57: State Indicators

    Chapter 5 – Operation RT431 STATE INDICATORS The S indicator shows that unit is synchronized with time reference from GPS satellites. This indicator blinks when the unit is searching for orbit data from GPS satellites, which is a common situation if the unit has been moved over long distances or has been out of operation for a long period of time.

  • Page 58: Web Interface (Remote Access)

    Chapter 5 – Operation RT431 WEB INTERFACE (REMOTE ACCESS) RT431 has a Web Interface that allows monitoring and configurating the unit. In this section is shown how monitoring the RT431 status in real time, checking general system information and to logging external timestamps pulses.

  • Page 59: Monitoring Menus - Web Interface

    Chapter 5 – Operation RT431 MONITORING MENUS – WEB INTERFACE The following sections will describe the monitoring menus from the Web Interface:  Status: monitoring the status of the unit in real time.  General Information: information of the unit system. ...

  • Page 60: Status

    Chapter 5 – Operation RT431 STATUS The section S of Web Interface, as shown bellow, allows monitoring status information of the unit in TATUS real time. Figure 21: Section to monitor the status of the unit in the Web Interface The unit status information is grouped into areas, as follows: ...

  • Page 61: General Information

    Chapter 5 – Operation RT431 GENERAL INFORMATION The section G of the Web Interface allows visualizing system information of the unit. ENERAL NFORMATION Figure 22: Section to visualize general information of the system The system information is presented as follows: ...

  • Page 62: Configuration

    CONFIGURATION CHAPTER 6...

  • Page 64: Chapter Overview

    Chapter 6 – Configuration RT431 CHAPTER OVERVIEW This chapter describes how to configure the RT431. THIS CHAPTER CONTAINS THE FOLLOWING SECTIONS:  Web Interface  Ethernet  Time Settings  Time Signals  PTP Configuration  Setup RT431...

  • Page 65: Web Interface

    Chapter 6 - Configuration RT431 WEB INTERFACE The RT431 web Interface allows configuring network parameters, time parameters, time synchronization outputs and PTP standard, updating firmware, changing key, controlling access and manipulating configurations. To connect to the Web Interface, enter the unit Ethernet port IP address into the address field of a web browser.

  • Page 66: Ethernet

    Chapter 6 – Configuration RT431 ETHERNET The Ethernet section of the Web Interface allows configuring network parameters of Ethernet port, gateway and DNS. Figure 23: Section to configure network parameters of the unit ETHERNET PORTS The Ethernet port offers communication via TCP/IP or UDP/IP networks. ...

  • Page 67: Dns Server

    Chapter 6 - Configuration RT431 DNS SERVER The DNS server configuration allows the RT431 to communicate with the DNS server from a local subnet. The IP Address field allows entering the IP Address of the network's name server (only decimal numbers). SENDING CONFIGURATION To send the new configuration to the equipment, click on the <Apply>...

  • Page 68: Time Settings

    Chapter 6 – Configuration RT431 TIME SETTINGS The Time Settings section of the Web Interface allows configuring time parameters. Figure 24: Section to configure time parameters TIME PARAMETERS  The field Timezone allows configuring the time zone of the unit, and converting UTC time to local time.

  • Page 69: Sending Configuration

    Chapter 6 - Configuration RT431 SENDING CONFIGURATION To send the new configuration to the equipment, click on the <Apply> button. Then the username and password of the equipment will asked. Once both enterred, click on login and the equipment will updates its configuration. A message will be displayed informaing the status of the update.

  • Page 70: Time Signals

    Chapter 6 – Configuration RT431 TIME SIGNALS The Time Signals section of the Web Interface allows configuring the signals applied to the outputs of the unit. See figure below: Figure 25: Section to configure time signals applied in the outputs RT431...

  • Page 71: Outputs

    Chapter 6 - Configuration RT431 OUTPUTS  TTL 1 / 2: allows configuring the TTL-level electrical outputs 1 and 2. Both outputs are screw type.  OC 1: allows configuring the two collector output; For each electrical, optical, open collector and serial output, it is possible to configure the following signals: ...

  • Page 72: Serial Datagram

    Chapter 6 – Configuration RT431 SERIAL DATAGRAM  The field Datagram allows configuring a datagram sent by the serial port (TDx pin).  ACEB, NEMEA, GPZDA, Meinberg and customizable datagrams are possible. When choosing a customizable datagram, it is necessary to enter a characters set according to the time information used.
  • Page 73 Chapter 6 - Configuration RT431 00 ... 59 Seconds 001 ... 366 Day of the year 01 ... 31 Day of the month 01 ... 12 Month 00 ... 99 Year (the last two digits) 2000 ... 2099 Year (four digits) 1 ...

  • Page 74: Sending Configuration

    Chapter 6 – Configuration RT431 SENDING CONFIGURATION To send the new configuration to the equipment, click on the <Apply> button. Then the username and password of the equipment will asked. Once both enterred, click on login and the equipment will updates its configuration. A message will be displayed informaing the status of the update.
  • Page 75 Chapter 6 - Configuration RT431 Pulse width of 1us when selected: PPX pulse witdth of 1us when unit is unlocked unlocked unselected: PPX pulse width does not change when unit is unlocked Disable PPS when unlocked selected: disable PPS signal when the unit is unlocked unselected: maintain PPS signal when unit is unlocked Cable delay compensation 0 up to 999 nanoseconds...

  • Page 76: Ptp Configuration

    Chapter 6 – Configuration RT431 PTP CONFIGURATION The PTP section of the Web Interface allows the user to configure the parameters for the PTP protocol. Figure 26: Section to configure PTP parameters PROFILE RT431 has a set of features attributed to the application of PTP protocol, which the IEEE1588 standard assigns the name of Profile.

  • Page 77: Domain Number

    Chapter 6 - Configuration RT431 Interval between delay, time sync and Announce messages (to calculate BMC) every 1 second. 3 seconds waiting time for receiving Announce messages.  Custom Profile: profile with all features freely configurable by a user.  Default Profile: profile partly configurable, with some predetermined features, which cannot be modified.

  • Page 78: Ptp Messages

    Chapter 6 – Configuration RT431 When RT431 is used as master, BMC algorithm tie breaking criteria priorities should be attributed. The fields Grandmaster priority #1 and #2 allow configuring the priorities of both Ethernet ports, in which #1 is the first and #2 is the last tie breaking criterion.

  • Page 79: Table 12: Summary Of Configurable Ptp Parameters

    Chapter 6 - Configuration RT431 Table 12: Summary of configurable PTP parameters Profile Power Features defined as non-configurable Default Domain number 0, priority 128, and operation as master Custom All features are configurable Features Domain number 0 up to 3 Network protocol UDP or Ethernet level 2 Operation mode...

  • Page 80: Setup

    Chapter 6 – Configuration RT431 SETUP The S section of the Web Interface allows updating the firmware, manipulating configurations, changing ETUP key, and changing configuration username and password. Firmware and key updates will be described in Maintenance chapter. Figure 27: Section to update firmware, manipulate configurations, change key and change configuration username and password RT431...

  • Page 81: Configuration Management

    Chapter 6 - Configuration RT431 CONFIGURATION MANAGEMENT  Backup Configuration: It is possible to receive a file with the current configuration of the unit and store it in a directory on the computer. Saving the final configuration of the unit as a backup is recommended.

  • Page 82: Reset Gps Almanac

    Chapter 6 – Configuration RT431 RESET GPS ALMANAC This option deletes the Almanac data from the GPS. Afterwards the GPS will take several minutes to rebuild the Almanac. The almanac consists of orbit courses and status information for each satellite in the constellation, an Ionospheric model, and information to relate GPS derived time to Coordinated Universal Time (UTC).

  • Page 83: Maintenance

    Chapter 6 - Configuration RT431 MAINTENANCE CHAPTER 7 RT431...

  • Page 84: Chapter Overview

    Chapter 7 – Maintenance RT431 CHAPTER OVERVIEW This chapter describes the information to consider for an eventual maintenance. THIS CHAPTER CONTAINS THE FOLLOWING SECTIONS:  Time Synchronization Failure (Locked Signaling)  Firmware Update  Equipment Key Change  Cleaning Instructions ...

  • Page 85: Time Synchronization Failure (Locked Signaling)

    Chapter 7 – Maintenance RT431 TIME SYNCHRONIZATION FAILURE (LOCKED SIGNALING) When the unit is operating without time reference in the GPS antenna, the failure is signaled in different ways: Local interface, Web Interface, signaling relay, and data packets from IRIG-B, NTP, PTP and SNMP protocols.

  • Page 86: Ntp Protocol

    Chapter 7 – Maintenance RT431 according to the bits clock class and clock accuracy, in which the criterion for assessing the quality of the signal is configured in the device that receives the PTP messages. NTP PROTOCOL In NTP protocol, information is given in layers, known as Stratum, numbered from 0 to 16. Layer 1 indicates the unit is operating with time reference from the GPS antenna input, and it is in S state.

  • Page 87: Firmware Update

    Chapter 7 – Maintenance RT431 FIRMWARE UPDATE Eventually, new firmware versions will be released with updates and improvements to the unit. The S section of the Web Interface allows updating the firmware, manipulating configurations, changing ETUP key, and changing configuration username and password. Figure 29: Section to update firmware, manipulate configurations, change key and change configuration username and password To update the unit firmware, access the Setup section of the Web Interface by typing the unit IP address in a...

  • Page 88: Equipment Key Change

    It is possible to update the unit key in order to enable new features, according to the commercial policy. Contact Alstom to acquire a new key to enable the desired features. Figure 30: Section to update firmware, manipulate configurations, change key and change configuration username and password.

  • Page 89: Cleaning Instructions

    Chapter 7 – Maintenance RT431 CLEANING INSTRUCTIONS Before cleaning the equipment, make sure that the primary voltage is removed. If it is necessary cleaning the exterior of the equipment, use only a dry cloth. Internally it is not required any cleaning. RT431...

  • Page 90: Equipment Return

    RT431 EQUIPMENT RETURN All parts and components comprising Reason devices shall be repaired exclusively by Alstom. In case of equipment malfunction the customer shall get in contact with Alstom’s Contact Centre and never attempt to repair the device by his own.

  • Page 91: Technical Specification

    TECHNICAL SPECIFICATION CHAPTER 8...

  • Page 93: Chapter Overview

    Chapter 8 – Technical Specification RT431 CHAPTER OVERVIEW This chapter describes the technical specifications of the product. THIS CHAPTER CONTAINS THE FOLLOWING SECTIONS:  Power Supply  GPS Antenna  Internal Oscillator  Outputs  Precision Time Protocol PTP (IEEE 1588) ...

  • Page 94: Power Supply

    Chapter 8 – Technical Specification RT431 POWER SUPPLY Table 13: Power supply specifications Operating nominal voltage 100-250Vdc, 110-240Vac Operating voltage range 80-300Vdc, 88-264Vac Frequency 50/60 Hz ± 3 Hz MAX 20 VA Power Consumption Typical 10 W GPS ANTENNA GPS ANTENNA RECEIVER Table 14: GPS Antenna input specifications for temporal synchronization Signal GPS L1 Frequency, C/A code...

  • Page 95: Gps Antenna Type

    Chapter 8 – Technical Specification RT431 GPS ANTENNA TYPE Table 15: GPS Antenna specifications Type 3.3 V Active GPS antenna (<20 mA) Frequency 1588 ± 3MHz Output / VSWR 2.0 Max 50 Ω Impedance Gain 30dB @ 25°C Noise 3.3dB max (25°C ± 5°C) Azimuth coverage 360°...

  • Page 96: Surge Arrester

    Chapter 8 – Technical Specification RT431 Impedance 50 ohms Capacitance 81pF/m SURGE ARRESTER Table 17: Surge arrester specifications Nominal discharge current In (8/20µs) 10 kA Dynamic residual voltage <600 V Band width <4 Ghz 50 Ω Impedance Connector RT431...

  • Page 97: Internal Oscillator

    Chapter 8 – Technical Specification RT431 INTERNAL OSCILLATOR Table 18: Internal oscillator specifications −7 Drift (without external reference) < 0.1 ppm (10 The internal drift of the GPS clock is expressed in ppm. In the industry, the de facto standard for crystal accuracy is 20 ppm, interpreted as plus or minus number (±...

  • Page 98: Ttl Level Electrical Outputs

    Chapter 8 – Technical Specification RT431 Table 19: RT431 connectors Indicador Description AC or DC input 2 electrical outputs with TTL level screw connector, one of them insulated 1 open collector output 1 RS232 serial outpout Communication ports via Ethernet network Indicators of Power, Synchronization, Alarm and one reset button GPS antenna input TTL LEVEL ELECTRICAL OUTPUTS...

  • Page 99: Open Collector Electrical Outputs

    Chapter 8 – Technical Specification RT431 OPEN COLLECTOR ELECTRICAL OUTPUTS Table 21: Open callector outputs specifications Number of Outputs Maximum collector emetter voltage 400 V Maximum current 300 mA Connectors 4 screws SERIAL PORT (RS232) Table 22: RS232 serial port specifications Number of Outputs Signal Level RS232...

  • Page 100: Ethernet Port

    Chapter 8 – Technical Specification RT431 Peer-to-Peer (Multicast) Profiles Standard, Power System PTP Communication Port Ethernet Port 1 ETHERNET PORT Table 24: Ethernet port specification Transmission Rates 10/100 Mbps Connector RJ45 NTP v2 (RFC 1119) NTP v3 (RFC 1305) NTP v4 (without RFC) SNTP Protocols Supported SMNP (v1, v2c and v3), including...

  • Page 101: Type Test

    Chapter 8 – Technical Specification RT431 5 … 95%, non-condensing Relative humidity Table 26: Enclosure Protection IEC 60529 Front, sides and rear IP20 TYPE TEST Table 27: EMC tests were performed according to IEC 60255-26 referring to the following standards IEC 61000-4-2:2008 6 kV contact / 8 kV air IEC 61000-4-3:2006...
  • Page 102 Chapter 8 – Technical Specification RT431  A.C. and D.C. voltage dips Test level: 0% residual voltage Duration time A.C.: 1 cycle D.C.: 16,6 ms  Test level: 40% residual voltage Duration time A.C.: 12 cycles D.C.: 200ms IEC 61000-4-11:2004 ...

  • Page 103: Dimensions, Weight

    Chapter 8 – Technical Specification RT431 Radiated emission The definition of the limit frequency is based on the maximum internal frequency of the equipment. On RT431, the maximum internal frequency is 100 MHz. For this case, the levels of CISPR 11 satisfy the normative IEC 60255-26. CISPR22:2008 Conducted emission Limits:...
  • Page 104 Chapter 8 – Technical Specification RT431 Width (bory) 117 mm (4.6 in) Depth 51 mm (2 in) Weight 1 kg (2.2 lbs) RT431 dimensions are shown bellow. Figure 32: RT431 Dimensions RT431...

  • Page 105: Ordering Options

    ORDERING OPTIONS CHAPTER 9...

  • Page 106: Chapter Overview

    Chapter 9 – Cortec RT431 CHAPTER OVERVIEW This chapter describes the Cortec number formation from RT431. THIS CHAPTER CONTAINS THE FOLLOWING SECTIONS:  RT431 Cortec RT431...

  • Page 107: Rt431 Cortec

    Chapter 9 – Cortec RT431 RT431 CORTEC Issue D RT431...

  • Page 108: Appendixes

    APPENDIXES CHAPTER 10...

  • Page 109: Appendix A - Irig-B Standard Summary

    Chapter 10 – Appendixes RT431 APPENDIX A – IRIG-B STANDARD SUMMARY Table 31: IRIG-B standard summary reference bit (P + 10 ms seconds 1 seconds (0 ... 59 or 60) + 20 ms seconds 2 + 30 ms seconds 4 + 40 ms seconds 8 + 50 ms...
  • Page 110 Chapter 10 – Appendixes RT431 + 200 ms hours 1 hours (0 ... 23) + 210 ms hours 2 + 220 ms hours 4 + 230 ms hours 8 + 240 ms index bit (0) + 250 ms hours 10 + 260 ms hours 20 + 270 ms...
  • Page 111 Chapter 10 – Appendixes RT431 + 420 ms index bit (0) + 430 ms index bit (0) + 440 ms index bit (0) + 450 ms index bit (0) + 460 ms index bit (0) + 470 ms index bit (0) + 480 ms index bit (0) + 490 ms...
  • Page 112 Chapter 10 – Appendixes RT431 difference between local time and UTC + 640 ms Time Offset Sign (0=+, 1=-) (negative for West Greenwich) + 650 ms Time Offset 1 + 660 ms Time Offset 2 difference between local time and UTC (-12 ...
  • Page 113 Chapter 10 – Appendixes RT431 + 840 ms time-of-day 16 + 850 ms time-of-day 32 + 860 ms time-of-day 64 + 870 ms time-of-day 128 + 880 ms time-of-day 256 + 890 ms position identifier 9 (P time-of-day 512 + 900 ms time-of-day 1024 + 910 ms time-of-day 2048...

  • Page 114: Appendix B - Ptp Standard Concepts (Ieee1588)

    Chapter 10 – Appendixes RT431 APPENDIX B – PTP STANDARD CONCEPTS (IEEE1588) ESCRIPTION The Precision Time Protocol (PTP) is an ultimate time synchronization accuracy protocol for Ethernet networks. On a local area network, it achieves clock accuracy in the sub-micro second range, making it suitable for applications where synchronization is essential to the measurement system.
  • Page 115 Chapter 10 – Appendixes RT431 The algorithm establishes an order of searching for the attributes and from the results, determines which will be used as time source.  Boundary Clock: According to IEEE1588 standard, a boundary clock has multiple PTP ports in a domain and maintains the timescale used in the domain.
  • Page 116 Chapter 10 – Appendixes RT431 ULTICAST AND NICAST ETWORKS The first revision of the IEEE1588 standard specifies only multicast network where a PTP message sent by a network port can be received by all other ports connected to the same network. The great advantage of the multicast network is that the master clock sends only one packet of time Sync to the network, and it is received by all slave devices connected to that network.
  • Page 117 Chapter 10 – Appendixes RT431 ��1 − ��1′ = �� ̃ + �� ��2 − ��2′ = −�� ̃ + �� Combining the above two equations, we find that: (��1′−��1−��2′+��2) �� ̃ = The clock now knows the offset õ during this transaction and can correct itself by this amount to bring it into agreement with their other master.
  • Page 118 Chapter 10 – Appendixes RT431 sent. The delay measurement is performed by sending messages containing the timestamp of the time of receipt to the master clock which sends a reply with information of the delay. The second review of IEEE1588 standard, in 2008, specifies two ways of compensating delay: End-to-end and Peer-to-peer: ...
  • Page 119 Chapter 10 – Appendixes RT431 the network that are able to operate as master should periodically send Announce messages to the network, becoming candidates to be master of the network. The clock connected to the network selected as master by the BMC algorithm, should send Sync messages, and in case it is a two-step clock, it should also send a Follow Up message, containing a timestamp.

  • Page 120: Appendix C - Serial Datagrams

    Chapter 10 – Appendixes RT431 APPENDIX C – SERIAL DATAGRAMS RT431 can be configured to send datagrams through serial ports. The datagrams defined for the unit are ACEB, NEMEA GPZDA, and Meinberg. ACEB D ATAGRAMS ACEB datagram comprises 13 bytes, sent once per minute in the second second of the minute (i.e. 12:00:02, then 12:01:02).
  • Page 121 Chapter 10 – Appendixes RT431 NEMEA GPZDA D ATAGRAM NEMEA ACEB datagram comprises 32 characters, sent once per second. The datagram information is described below: $GPZDA,hhmmss.0,DD,MM,YYYY,,*CC<CR><LF> Table 33: GPZDA Datagram Time Information Parameters Possible values Description 00 ... 23 hours 00 ...
  • Page 122 Chapter 10 – Appendixes RT431 Table 35: GPZDA Datagram Checksum Information Parameters Description Comments checksum two hexadecimal digits representing the result of exclusive OR of all characters between ‘$’ and ‘*’ (‘$’ and ‘*’ are excluded) EINBERG DATAGRAM Meinberg datagram comprises 32 characters, sent once per second. The datagram information is described below: <STX>D:DD.MM.YY;T:w;U:hh.mm.ss;uv__<ETX>...
  • Page 123 Chapter 10 – Appendixes RT431 Table 37: Meinberg Datagram Beginning and End Information Caracteres ASCII ASCII Description <STX> start-of-datagram <ETX> end-of-datagram space Table 38: Meinberg Datagram Locked State Information Parameters Description Comments ‘_’ se “locked”, ‘#’ if not status ‘_’ se “locked”, ‘*’ if not status RT431...

  • Page 124: Appendix D - Gps Antenna Delay Compensation

    GPS Signal Attenuation GPS signal attenuation is related to cable type and overall cable length. When using the active antenna supplied by Alstom, total attenuation should not exceed 32 dB. Total attenuation can be computed by using: �� = ��...
  • Page 125 Chapter 10 – Appendixes RT431 ROPAGATION ELAY The antenna cable delays GPS signal. In applications in which the ultimate time accuracy is desired, this delay should be compensated inside the unit. Typically, the delay introduced by coaxial cables is in the magnitude of 4 ns/m (1.2 ns/ft) of cable length. The exact delay can be computed by using: ��...

  • Page 126: Appendix E - Application Examples

    Chapter 10 – Appendixes RT431 APPENDIX E – APPLICATION EXAMPLES 1 – T PPLICATION XAMPLE YNCHRONIZATION UTPUTS In Application Example 1, IRIG-B outputs, synchronization via Ethernet with NTP protocol and serial datagrams to synchronize relays and a disturbance recorder are used. Also a transceiver optical-electrical (RT412 - Optical Transceiver) to transform an electrical output in optics to synchronize a relay and a distributor of signals (RT411 - Timing Distributor) that, from an output of the RT430/434, synchronizes three relays.
  • Page 127 Chapter 10 – Appendixes RT431 In Application Example 2 are employed IRIG-B outputs to synchronize some IEDs, a disturbance recorder and a signals distributor (RT411 - Timing Distributor) that from an output of the RT430, synchronizes other four equipment. Figure 34: Application Example 2 - Signal Distribution RT431...
  • Page 128 Chapter 10 – Appendixes RT431 3 - C PPLICATION XAMPLE ONNECTING THE ERIAL The Application Example 3 illustrate the serial port connections RS232 and RS485 levels, used to synchronize a PLC and two relays, respectively. Figure 35: Application Example 3 - Connecting the Serial Port at Level RS232 Figure 36: Application Example 3 - Connecting the Serial Port at Level RS485 RT431...
  • Page 129 © ALSTOM 2015. All rights reserved. Information contained in this document is indicative only. No representation or warranty is given or should be relied on that it is complete or correct or will apply to any particular project. This will depend on the technical and commercial circumstances.

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