SEL-3505/3505-3
Real-Time Automation Controller (RTAC)
The SEL-3505 is a lower-voltage version of the RTAC with options ranging from 12 Vdc to 24/48 Vdc. This is a compact RTAC that supports DIN- and surface-mounting options and delivers all the standard features of an RTAC, making it an excellent option for protocol conversion and secure communication when space is limited. This model includes an optional internal modem and is ideal for small substations, distributed energy resources (DERs), and recloser applications.
For more information about the RTAC automation platform, its applications, and other available models, visit the RTAC platform page.
Starting At
$1,050Rugged Hardware—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 RTAC operates reliably, even in challenging environments. For added protection, you can order conformal coating to protect against harsh environments and airborne contaminants, such as hydrogen sulfide, chlorine, salt, and moisture.
Simple, Seamless Configuration—Quickly design an integrated automation system that includes protocol conversion, SCADA communications, IEC 61850 integration, synchrophasors, time synchronization, data management, and programmable logic. New automation tools are continuously being added to simplify complex applications, such as condition monitoring, disturbance fault recording, configuring SCADA point maps, and archiving and alarming for data changes. See the acSELerator RTAC SEL-5033 Software manual for more information on our automation software extensions.
Extensive Protocol Support—Concentrate and manage data from new and legacy relays and other IEDs using our extensive set of protocols. Standard SCADA protocols are included with the purchase of any RTAC, including DNP3, IEC 60870-101/104, Modbus, and many more.
Integrated Security—The RTAC is built with cybersecurity from the hardware up. Exe-GUARD approvelist anti-malware technology provides increased security, making the RTAC the first product in the market to include an approvelist antivirus solution that does not require end-user patch updates. Make the RTAC the secure access point into your substation or plant with a full-featured set of engineering access tools. Authenticate using LDAP or RADIUS central authentication or local role-based user authentication. Restrict users access to the required set of functions to do the job with configurable role-based access control (RBAC). Log user activity in the Sequence of Events (SOE) log, and forward notifications via Syslog. Encrypt critical data and engineering access via Secure Shell (SSH) and Transport Layer Security (TLS). The RTAC enforces authentication and proxies engineering access connections for serial and LAN-connected devices.
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.
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Features
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Built-in accelerometer for intrusion detection
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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
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Rugged enclosure withstands EMI, RFI, shock, and vibration
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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
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LEDs simplify diagnostics by indicating transmitted and received activity on each port
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Eight digital input points
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Programmable bicolor LEDs
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Rugged enclosure withstands EMI, RFI, shock, and vibration
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Built-in optical sensor detects opened cabinet door
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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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Power
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Independent Ethernet ports can be RJ45 or LC fiber
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Details
The SEL RTAC is a powerful, multifunctional platform designed for the most demanding utility and industrial applications. With precise, deterministic processing, integrated cybersecurity features, and rugged, industrial-grade hardware, the RTAC ensures reliable performance for critical operations, even in the harshest operating environments.
The RTAC platform offers a range of hardware options, extensive protocol support, and an embedded IEC 61131 logic engine for custom programming—making it a versatile solution for a variety of applications, ranging from data concentration and protocol conversion to comprehensive power management and control.
For more information about the RTAC automation platform, its applications, and other available models, visit the RTAC platform page.
Minimum Software Version
Video Playlists
RTAC Basics
- 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
RTAC HMI
- How to Use the RTAC HMI, Part 1: acSELerator Diagram Builder Overview
- How to Use the RTAC HMI, Part 2: Building a Project
- How to Use the RTAC HMI, Part 3: Shared Tags
RTAC Firmware Release Highlights
- RTAC R153 Firmware Update
- RTAC R152 Firmware Update
- SEL RTAC R151 Firmware: New Features and Enhancements
Latest Firmware Versions
There are no firmware versions available for this product.
| Product | Revision | Firmware ID | Date Available | Serial Number |
|---|---|---|---|---|
| SEL-3505 | R153-V0 | SEL-3505-R153-V0-Z000058-D20240918 | 9/25/24 | ~1242690001 |
| SEL-3505 | R152-V2 | SEL-3505-R152-V2-Z000294-D20240918 | 9/25/24 | ~1242690001 |
| SEL-3505 | R151-V6 | SEL-3505-R151-V6-Z000267-D20240918 | 9/25/24 | ~1242690001 |
| SEL-3505 | R150-V8 | SEL-3505-R150-V8-Z000303-D20240918 | 9/25/24 | ~1242690001 |
| SEL-3505-3 | R153-V0 | SEL-3505-3-R153-V0-Z000058-D20240918 | 9/25/24 | ~1242690001 |
| SEL-3505-3 | R152-V2 | SEL-3505-3-R152-V2-Z000294-D20240918 | 9/25/24 | ~1242690001 |
| SEL-3505-3 | R151-V6 | SEL-3505-3-R151-V6-Z000267-D20240918 | 9/25/24 | ~1242690001 |
| SEL-3505-3 | R150-V8 | SEL-3505-3-R150-V8-Z000303-D20240918 | 9/25/24 | ~1242690001 |
The Firmware IDs for older versions of the firmware can typically be found in Appendix A of the instruction manual.
Minimum Software Version
Instruction Manuals
Sales Resource Central access is required to view the content in this tab.
Sales Resource Central3505 - Software Tab
Configuration Software
acSELerator RTAC SEL-5033 Software
acSELerator RTAC is an intuitive, easy-to-use application designed to configure the SEL Real-Time Automation Controller (RTAC) family of products, including the SEL-2240 Axion. The software offers a wide range of optional tools, add-ons, and library extensions.
Learn more and download on the acSELerator RTAC software page..
RTAC Libraries and Extensions
A wide range of IEC 61131-based libraries and extensions are available for the RTAC platform. Instructions for libraries and extensions are available in the Programming Reference and via the acSELerator RTAC help menu.
Learn about the available libraries and extensions on the RTAC platform page.
acSELerator Architect SEL-5032 Software
Architect allows users to configure and document IEC 61850 systems that include GOOSE, Sampled Values (SV), or Manufacturing Message Specification (MMS) communications. Architect automatically compares SCL files with IEC 61850 requirements to ensure standard compliance.
Learn more and download on the Architect software page.
Automated Data Collection
SEL Data Management and Automation (DMA) Application Suite
Available on the Blueframe platform, DMA applications automatically collect, store, and manage device-specific information like oscillography, Sequence of Events (SOE) data, device settings, and property information. They also provide automated password rotation and streamlined device audits.
Learn more on the DMA software page.
Visualization & Analysis
SEL-5601-2 synchroWAVe Event SOFTWARE
synchroWAVe Event helps engineers diagnose the cause of power system disturbances, including faults. It is a powerful and easy-to-use solution for displaying and analyzing SEL event reports and COMTRADE files.
Learn more and download on the synchroWAVe Event software page.
RTAC Supported Protocols Tab
- Client Protocols
- CDC Type II
- Courier
- CP 2179
- DNP3 Serial, DNP3 LAN/WAN
- EtherNet/IP—Explicit Message Client*
- File Transfer Protocol (FTP)/Secure FTP (SFTP)*
- Flex Parse
- IEC 60870-5-101/104
- IEC 60870-5-103
- IEC 61850 MMS and MMS Client File Services*,1
- IEEE C37.118 Synchrophasors
- LG 8979
- Modbus RTU, Modbus TCP
- OPC UA*,2
- SEL Protocols
- SES-92
- Simple Network Management Protocol (SNMP)
- Server Protocols
- CDC Type II
- DNP3 Serial, DNP3 LAN/WAN
- EtherNet/IP—Implicit Message Adapter*
- FTP/SFTP
- IEC 60870-5-101/104
- IEC 61850 MMS and MMS Server File Services*
- IEEE C37.118 Synchrophasors
- LG 8979
- Modbus RTU, Modbus TCP
- OPC UA*,2
- SEL Protocols
- SES-92
- SNMP Agent
- Peer-to-Peer Protocols
- IEC 61850 GOOSE*
- Network Global Variable List (NGVL)
- SEL Mirrored Bits Communications
- Field Bus Protocol
- EtherCAT to SEL-2240 Axion I/O Modules*,3
*Optional feature.
1Not supported on the SEL-3505 and SEL-3505-3.
2Only supported on the SEL-3350 RTAC, SEL-3555, SEL-3560S, and SEL-3560E.
3Only supported on the SEL-3530-4, SEL-2241, SEL-3350 RTAC, SEL-3555, and 3560E. For the SEL-3555 and SEL-3560E to support EtherCAT, they should be configured to include the SEL-3390E4 expansion card.
3505-2-3 Cable Options
| Cable Part Number | Termination | Length | Notes | Schematic |
|---|---|---|---|---|
| C605A | DB-9 Male | 1 to 100 ft | SEL RJ45 Serial Cable (RS-232, DTE-DTE, RJ-45 M/DB-9 M, IRIG-B, Hardware Flow Control) | View |
| C489 | DB-9 Male | 1 to 100 ft | SEL RJ45 Serial Cable to SEL DNP (RS-232, DTE-DTE, RJ45 M/DB-9 M, IRIG-B) | View |
| C605 | DB-9 Male | 1 to 6 ft | SEL RJ45 Serial Cable (RS-232, DTE-DTE, RJ45 M/DB-9 M, IRIG-B, Pin 1 Power, Hardware Flow Control) | View |
| C605R* | DB-9 Male | 1 to 100 ft | SEL RJ45 Serial Cable (RS-232, DTE-DTE, RJ45 M/DB-9 M, IRIG-B, Hardware Flow Control) | View |
| C477 | DB-9 Male | 1 to 150 ft | SEL RJ45 Serial Cable to GE DNP I/O (RS-485, RJ45 M/DB-9 M) | View |
| C616 | DB-9 Male | 1 to 100 ft | SEL RJ45 Serial Cable (RS-232, DTE-DCE, RJ45 M/DB-9 M, IRIG-B, Pin 1 Power, Hardware Flow Control) | View |
| C618 | DB-9 Male | 1 to 100 ft | SEL RJ45 Serial Cable (RS-232, DCE) for modem | View |
*This cable is double-shielded (contains both foil and braid shields) with the shield connected to the shell at both ends of the cable for improved immunity to electrical disturbances that can cause data loss.
Product Certifications
