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SEL-3505/3505-3

Real-Time Automation Controller (RTAC)

Suitable for use in utilities and industrial environments, the SEL-3505 Real-Time Automation Controller (RTAC) is a lower-voltage version of the SEL-3530 RTAC. The SEL-3505 RTAC is compact and delivers all the standard features of an RTAC, making it an excellent option for protocol conversion and secure communication when space is limited.

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RTAC Family Comparison Chart

Starting At

$868 USD

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Low-Cost Protocol Converter—With the RTAC, you can exchange data through DNP3, Modbus, IEC 61850 GOOSE, IEC 60870-5-101/104, LG 8979, SES-92, IEEE C37.118 for synchrophasors, SEL Fast Messaging, and Mirrored Bits communications. The RTAC also allows you to execute output logic for automation, perform math and logic functions, and convert data between protocols.

Dial-Up Engineering Access and SCADA Communications—The RTAC's serial ports, dial-up modem, and high-speed network connection give you several ways to gain secure, remote access.

IED Event Collection With Optional acSELerator Team SEL-5045 Software—By having all of the information from each intelligent electronic device (IED), filtered and processed through the RTAC, you get immediate notification of any issues through the alarms, Sequence of Events logs, and/or email messages. The optional integrated modem in the SEL-3505 expands your communications for SCADA and engineering access.

Time Synchronization—Implement time-code inputs, such as IRIG-B and Network Time Protocol (NTP), to distribute precise time to connected. In the absence of an external time source, use the internal information processor clock to generate IRIG-B for connected devices.

Integrate Power Management With Industrial Control—Provide a powerful gateway between the substation and the factory using EtherNet/IP. This popular industrial protocol facilitates reliable communication between electronic devices in industrial automation systems. Use the RTAC EtherNet/IP adapter to exchange critical data for real-time monitoring, process control, and power system integration.

Updates

New RTAC Libraries/Extensions

  • Falling Conductor Protection: Detect and mitigate broken and falling conductor scenarios. This extension leverages synchrophasor measurements as well as breaker and switch status to drive a multifaceted detection algorithm. It is intended for use on the SEL-3350, SEL-3555, and SEL-3560 RTACs. To license this option, please contact your SEL Engineering Services representative.
  • CtPt Monitor: Monitor CT and PT health using streaming measurements as part of an asset monitoring program. Leverage measurements from redundant CTs or PTs to facilitate continuous verification of nominal CT or PT status. This extension provides immense scalability with no programming required. Usage of this extension requires the ConditionMonitoring license option.
  • Indirect Tagging: Streamline the configuration of shared tags for RTAC HMI optimization. This extension greatly simplifies the procedure detailed in application guide AG2018-16.
  • Simple Tag Mapper: Leverage automatic, best-fit, tag set mapping to quickly configure an RTAC settings file from start to finish. This extension provides an alternative to the Tag Processor for mapping client tags to server shared maps.

Latest RTAC Firmware Updates

 Firmware R149

  • Added IPv6 to RTAC WAN interfaces that support access to the webpage, APIs, DNP, Modbus, SEL, and SFTP protocols.
  • Enhanced the RTAC User API for adding, deleting, and modifying user accounts.
  • Added calculation channels to the Axion SEL-2245-2 AC Protection Module Recording Group to create custom channels in COMTRADE event reports.
  • The RTAC can now collect event reports from relays connected through SEL-2020 or SEL-2030 series communications processors.
  • Enhanced the Project API and added a downloadable report in the web interface to report information about project connections.
  • Added support for the SEL-3390T Time and Ethernet Adapter PCIe card in the SEL-3555.
  • Changed the default web settings that enforce HTTPS connections on port 443. The setting can be disabled to allow for connection via HTTP on port 80.

  

Previous RTAC Firmware Updates

 Firmware R148

  • Employ the new SEL-3350 Automation Controller as an RTAC for logical processing and system automation.
  • Configure the SEL-3555 RTAC to utilize RAID 1 for redundant storage application data, like events, Dynamic Disturbance Recording (DDR), and synchrophasor data.
  • Utilize the Configuration API to support monitoring for configuration changes using a configuration fingerprint.
  • Name collected COMTRADE files according to IEEE COMNAME standard.

 Firmware R147 

  • Stream 3 kHz point-on-wave samples when SEL-2245-42 AC Protection Modules are used in combination with the SEL-3555 RTAC.
  • Configure the RTAC to act as an access gateway to other web-based devices using the new Web Proxy feature. This feature enables secure web access to devices across networks connected to the RTAC.
  • Employ the Project Management API to upload and switch projects directly on the RTAC.
  • A new acSELerator RTAC SEL-5033 Software feature allows users to edit the RTAC web interface setting directly in the acSELerator RTAC project. This simplifies configuration by providing a one-step process for configuring RTAC communications settings.

 Firmware R146

  • Employ the RTAC to provide a powerful gateway between the substation and the factory using EtherNet/IP. This popular industrial protocol facilitates reliable communication between electronic devices in industrial automation systems. Use the RTAC’s EtherNet/IP adapter to exchange critical data for real-time monitoring, process control, and power system integration.
  • Expand your system integration by using the web APIs to obtain information about network audits, hardware ID properties, logic engine assets, networking, ports, acSELerator RTAC SEL-5033 Software projects, the status of projects, and users.

Firmware R145

  • Configure up to 100 IEEE C37.118 clients. Each client can be configured with up to 100 phasor measurement unit (PMU) data sets. Data sets can be passed directly to the IEEE C37.118 server without the need to configure logic on the RTAC. The data rates can be configured for up to 240 messages per second, and archiving is available with the Dynamic Disturbance Recording (DDR) extension.
  • Enable the SEL server to read files via ASCII, and use the SEL server to manage passwords for local accounts.

Firmware R144

  • Securely access your RTACs and SEL IEDs using RADIUS centralized authentication with multi-factor authentication support.
  • Integrate legacy RTUs using the CDC Type II client.

Firmware R143

  • Validate that critical commands were sent from trusted sources using DNP3 Secure Authentication Version 5.
  • Automatically detect and configure connected Axion modules in acSELerator RTAC SEL-5033 Software.
  • Develop and test custom RTAC libraries using the new acSELerator RTAC Developer Mode, which allows users to write and compile user logic into a library that can be deployed to other RTACs.
  • Update tag and device names using the new refactoring feature. The changes will reflect through the entire acSELerator RTAC project, including the Tag Processor.

Firmware R142

Compare two RTAC configurations in acSELerator RTAC SEL-5033 Software to detect setting differences.

Firmware R141

  • Create custom user roles with relevant granular permissions to restrict access to need-to-know information.
  • Easily download a complete password report for IED communications protocol passwords to get access to connected relays in emergencies.
  • Provide indefinite access to the RTAC HMI by using the new infinite timeout option.

Firmware R140

Combine multiple oscillography event files generated by Axion modules into one substation event report.

Firmware R139

  • Easily access user-generated files, dynamic disturbance recorder records, collected oscillography files, and more using the RTAC’s S/FTP server.
  • Generate COMTRADE or CSV files with data from the RTAC’s logic engine, which can include synchrophasor, protection, or SCADA data.
  • Manage in-service RTACs through the web interface with Live Data viewing and forcing, firmware upgrades, project uploads, and communications capture collections.
  • Easily configure engineering access with the SEL Protocol Server and support for YMODEM file transfer, the acSELerator QuickSet SEL-5030 Software HMI, and enhanced access commands.

Related Materials

Features

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      Built-in accelerometer for intrusion detection

    2. 2

      Built-in optical sensor detects opened cabinet door

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      LEDs simplify diagnostics by indicating transmitted and received activity on each port

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      Programmable bicolor LEDs

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      Demodulated IRIG-B input and output for high-accuracy time synchronization

    6. 6

      Rugged enclosure withstands EMI, RFI, shock, and vibration

    7. 7

      Optional integrated 56 kbps dial-up modem

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      Wide operating temperature range of –40° to +85°C (–40° to +185°F)

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      Four EIA-232 serial ports (two EIA-485 software-selectable)

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      Independent Ethernet ports can be RJ45 or LC fiber

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      Programmable input, output, and alarm contact

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      Built-in accelerometer for intrusion detection

    2. 2

      LEDs simplify diagnostics by indicating transmitted and received activity on each port

    3. 3

      Eight digital input points

    4. 4

      Programmable bicolor LEDs

    5. 5

      Rugged enclosure withstands EMI, RFI, shock, and vibration

    6. 6

      Built-in optical sensor detects opened cabinet door

    7. 7

      Wide operating temperature range of –40° to +85°C (–40° to +185°F)

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      Demodulated IRIG-B input and output for high-accuracy time synchronization

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      Three serial ports (one in front) are EIA-232/EIA-485 software-selectable

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      Three programmable Form C binary outputs

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      Three programmable Form C binary outputs

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      Three programmable Form C binary outputs

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      Power

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      Independent Ethernet ports can be RJ45 or LC fiber

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Details

Integrated Security
Make the RTAC the secure access point into your substation or plant using LDAP central authentication, local role-based user authentication, access logs, and secure engineering access. This increases your system security and helps meet regulatory standards.

Simple, Seamless Configuration
Quickly design an integrated automation system that includes protocol conversion, SCADA communications, synchrophasors, time synchronization, data management, and programmable logic. See how easy it is to set up and start using the SEL RTAC with our "How to" video series.

Renowned SEL Reliability and Support
The RTAC is designed and tested to meet or exceed IEEE 1613 and protective relay specifications for harsh environments and to withstand vibration, electrical surges, fast transients, and extreme temperatures. The SEL RTAC operates reliably, even in challenging environments.

Custom Logic
Create your logic solutions in the embedded IEC 61131 logic engine, which comes standard with every automation controller. Build custom user logic and access all system tags, including diagnostics, contact I/O, protocol data, and communications statistics, to provide unparalleled control flexibility.

Protocols
Concentrate and manage data from new and legacy relays and other IEDs using our extensive set of protocols.

Minimum QuickSet Version

Video Playlists

Videos in this series:

  • SEL RTAC—Install
  • SEL RTAC—Basic Software
  • SEL RTAC—Building a Project
  • SEL RTAC—DNP Client
  • SEL RTAC—Tag Processor Intro
  • SEL RTAC—Tag Processor Logging
  • SEL RTAC—Tag Processor Logic
  • SEL RTAC—Engineering Access with Legacy Commands
  • SEL RTAC—Engineering Access with Automatic Connections
  • SEL RTAC—IEC 61131 Programming
  • SEL RTAC—IEC 61131 Functions
  • SEL RTAC—IEC 61131 Function Blocks

Videos in this series:

  • How to Set the SEL Secure Communications System, Part 1: Overview
  • How to Set the SEL Secure Communications System, Part 2: Using acSELerator QuickSet
  • How to Set the SEL Secure Communications System, Part 3: Configuring acSELerator Team Software
  • How to Set the SEL Secure Communications System, Part 4: Configuring the SEL-3620
  • How to Set the SEL Secure Communications System, Part 5: Configuring the SEL RTAC
  • How to Set the SEL Secure Communications System, Part 6: Putting It All Together

Latest Firmware Versions

There are no firmware versions available for this product.

Product Revision Firmware ID Date Available Serial Number
SEL-3505 R149-V1 SEL-3505-R149-V1-Z000009-D20211214 12/17/21 ~1213510001
SEL-3505-3 R149-V1 SEL-3505-3-R149-V1-Z000009-D20211214 12/17/21 ~1213510001

The Firmware IDs for older versions of the firmware can typically be found in Appendix A of the instruction manual.

Minimum QuickSet Version

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Download the acSELerator RTAC library extensions, and take advantage of the flexibility that the SEL RTAC product line provides for your automation and integration applications. These library extensions are prebuilt code components for the advanced users of the SEL RTAC. Once downloaded, the instruction manuals for each of the library extensions will be accessible via the acSELerator RTAC help menu.

You can find the instruction manuals for the general purpose and optional libraries in the Programming Reference.


General Purpose Toolbox Libraries (Complimentary)


LibraryApplication
AnalogCondProcess analog quantities and digital filtering.
CrossTaskDataShare data between Main and Automation tasks.
ChannelMonitoringProvide alerts when a channel deviates from user-defined parameters.
DictionariesCreate lookup tables for fast data retrieval.
DynamicVectorsStore an arbitrary number of items, such as an automatically resizing array.
EmailSend alerts and notifications from an RTAC to a mail server.
IPAliasRedundancyShare a single IP between two RTACs in a redundancy scheme by using an IP alias.
MathComplexPerform mathematical operations on values with real and imaginary components.
MathMatrixPerform common matrix operations.
PacketEncodingsSerialize and deserialize information to/from a socket connection.
PowerMeteringPerform energy and demand calculations.
PowerSystemAutomationDetect synchrony between two independent voltage sources.
PowerSystemProtectionIdentify fault conditions, and unlock the potential of the SEL-2245-42 AC Protection Module.
QueueKeep track of ordered lists of objects.
QuickSortSort objects.
RecordingTriggersDetect specific conditions in analog and digital signals to initiate the capture of data.
SELEthernetControllerManage both UDP and TCP raw socket connections.
SELRandGenerate random numbers.
SELServerSimulatorsSimulate an SEL-351 client.
SELStringCombine and split strings in constant time.
SnmpLiteIdentify and troubleshoot network connectivity.
SyslogCollectorReceive Syslog messages from other devices.

Optional Value-Added Automation Solutions

To select any of the following libraries, choose the library as an option in the RTAC hardware configuration.


LibraryApplication/DetailsDependency Libraries
Grid Connection ControlControl the point of common coupling (PCC) between the utility and renewable power generation sources.Dynamic Disturbance Recorder, File I/O
Horizon SVP PlusTurn the RTAC into a synchrophasor vector processor. Detect the onset of uncontrolled wide-area oscillations with SVPplus modal analysis.None
Horizon Power System ModelResolve synchrophasor data streams using a model of the power system.File I/O
Dynamic Disturbance RecorderCollect data from within the logic engine to generate Sequence of Events (SOE), time-aligned CSV, and COMTRADE files in the RTAC.File I/O
Meter Trend RecorderRecord analog data in the RTAC, and send data to acSELerator Team SEL-5045 and acSELerator Meter Reports SEL-5630 Software for analysis.File I/O
Report Generator/EmailPlus ClientGenerate custom reports from data available from the RTAC's logic engine. It is bundled with a fully featured email client that integrates into secure email systems. File I/O
FTP SyncConnect to established S/FTP server infrastructure and automatically push files from the RTAC file system to remote destinations. File I/O
File I/ORead and write files to the RTAC file system. It includes a built-in SFTP/FTP client for sending and receiving files and provides programmatic access to fault and SOE records.None

Engineering Services Libraries (Contact Engineering Services for ordering information.)


LibraryApplication
Distribution AutomationFault location, isolation, restoration, and volt-VAR control of distribution feeders
Automated System Verification and MonitoringProtection system monitoring and verification (NERC PRC-005)
Ground Fault DetectionGround fault identification for ungrounded power systems
Falling Conductor ProtectionUse synchrophasors to detect and mitigate broken and falling conductor scenarios.

Product Certifications

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