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IEC 61850 Communication for RX3i
The GE IC695ECM850 is an IEC 61850 Ethernet Communication Module for the PACSystems RX3i platform. It connects an RX3i controller to an IEC 61850 network and allows the controller to operate as an IEC 61850 Client communicating with Intelligent Electronic Devices (IEDs) functioning as IEC 61850 servers. The module supports multiple IED connections, data read and write operations, control models, buffered and unbuffered reporting, data-model browsing and self-description functions. It is designed for electrical substation automation and other control architectures where IEC 61850 communication is required. Four switched Ethernet interfaces provide two RJ-45 copper ports and two SFP cages. This allows copper and fiber media to be combined according to the network architecture. Star and linear network topologies are supported. |
CORE FUNCTION
IEC 61850 CLIENT
• RX3i controller connectivity
• Multiple IED connections
• Copper / fiber Ethernet
• Star / linear topology
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Engineering Features
• IEC 61850 Client functionality for RX3i systems
• Read and write access to IEC 61850 data values
• Support for control models and report-by-exception operation
• Buffered and unbuffered reporting capability
• Data-model browsing and self-description support
• SCL-based configuration and online configuration functions
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Network Architecture
Ethernet: 10/100/1000 Mbps copper
Fiber: 100/1000 Mbps depending on SFP
Ports: 2 × RJ-45 + 2 × SFP cages
Topology: switched star / linear daisy-chain
Synchronization: SNTP client support
Service: Micro-B USB CLI for setup and diagnostics
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| Parameter | IC695ECM850 Specification |
| Module Type | PACSystems RX3i IEC 61850 Ethernet Communication Module |
| Protocol | IEC 61850 Client |
| CPU Compatibility | RX3i CPUs with appropriate supported firmware; documented compatibility includes CRU320, CPU320, CPU315 and CPE305/CPE310 families |
| Backplane | RX3i Universal Backplane; one backplane slot |
| Ethernet Interfaces | 2 × shielded RJ-45 copper interfaces + 2 × SFP cages |
| Copper Ethernet Speed | 10/100/1000 Mbps |
| Fiber Ethernet | 100/1000 Mbps with supported SFP devices |
| IED Connections | Up to 32 IED connections per ECM850 |
| ECM850 Modules per RX3i CPU | Up to 4; modules must be installed in the main rack |
| PLC Protocol Variables | Up to 5,000 per ECM850 |
| Combined I/O Memory | Up to 32 KB per ECM850; up to 128 KB per RX3i CPU |
| IP Addresses | 1 |
| MAC Addresses | 5 total: one associated with each external port and one internal |
| Network Topology | Switched star and linear daisy-chain |
| Time Synchronization | SNTP client, including multicast and broadcast operation |
| Operating Temperature | 0°C to 60°C; derating to 57°C applies under specified SFP conditions |
| Power Requirement | 3.3 VDC and 5 VDC backplane power; 3.3 V current varies with installed SFP devices |
| Hot Swap | Supported |
| USB | One Micro-B USB interface for CLI communication and diagnostics |
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SERIES STRUCTURE
RX3i
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The IC695ECM850 belongs to the PACSystems RX3i family of rack-based control and communication modules. Within an RX3i architecture, the ECM850 serves a specialized IEC 61850 communication role rather than acting as a conventional general-purpose Ethernet interface. Its four-port arrangement allows a project to combine copper Ethernet with compatible SFP-based fiber connections. Multiple ECM850 modules can be deployed in one RX3i CPU system when the application requires additional IEC 61850 device connections or separated communication configurations. The maximum configuration is four ECM850 modules per RX3i CPU, with the modules installed in the main rack. Remote or expansion-rack installation is not supported for the ECM850. |
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Where IC695ECM850 Fits
IC695ECM850 is suited to RX3i control systems that need direct IEC 61850 Client communication with intelligent electronic devices used in electrical substation automation. Its client functions cover device data access, control, reporting and data-model discovery. It is particularly useful when an existing RX3i controller must exchange IEC 61850 data without replacing the controller architecture. Copper and fiber Ethernet options can also be selected around the existing plant network. Hot-swap capability can reduce intervention time when replacing a module in a supported RX3i installation, while the front-panel status indicators provide practical clues during commissioning and service. |
Typical Replacement Triggers
01 — Loss of expected IEC 61850 communication
02 — Persistent port link or activity abnormalities
03 — Module status or configuration faults
04 — Failure of communication with configured IEDs
05 — Hardware replacement during RX3i maintenance
Replacement Check
Confirm the RX3i CPU firmware, rack position, IEC 61850 configuration, installed SFP type and network design before replacing the module. The replacement unit should match the required IEC 61850 function and hardware configuration. |
| Delivery | 3–5 days | Warranty | 12 months |
| Packaging | Brand New | Payment Term | T/T |
| Delivery Way | E-packing / FedEx / EMS / TNT / DHL / UPS | ||
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01
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Can IC695ECM850 be used when an RX3i system needs IEC 61850 Client communication without changing the main controller?
Yes. IC695ECM850 is specifically designed to connect an RX3i controller to an IEC 61850 network and provide IEC 61850 Client functions. The actual CPU, firmware and system configuration must satisfy the supported compatibility requirements. |
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02
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Does IC695ECM850 provide enough connection capacity for a multi-IED IEC 61850 installation?
The documented limit is up to 32 IED connections per ECM850 and up to four ECM850 modules per RX3i CPU, giving a system-level architecture that can support larger IEC 61850 configurations when the CPU and memory limits are also respected. |
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03
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Is IC695ECM850 suitable when the existing IEC 61850 network uses both copper and fiber connections?
Yes. The module has two shielded RJ-45 copper interfaces and two SFP cages. The RJ-45 interfaces support 10/100/1000 Mbps Ethernet, while supported SFP devices provide 100 Mbps or 1000 Mbps fiber options depending on the installed module and media type. |
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04
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Is IC695ECM850 a practical replacement when an installed module has intermittent network communication or status faults?
It can be considered when troubleshooting confirms that the ECM850 itself is the failed component. Before replacement, check the RX3i rack position, CPU firmware, IEC 61850 configuration, network links, SFP devices and IED communication. The module supports hot swapping in compatible RX3i installations, which can simplify maintenance intervention. |
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05
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What should be checked before purchasing IC695ECM850 for an existing RX3i IEC 61850 installation?
Verify the RX3i CPU type and firmware, main-rack installation requirement, required number of IED connections, configured IEC 61850 variables, network topology, copper or fiber interface requirements, and SFP selection. Providing the existing part number and system details with the quotation request helps reduce configuration mismatch risk. |
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