GE 336A4940DNP517FX Industrial Ethernet Switch

Product Details

336A4940DNP517FX Product Description

The GE 336A4940DNP517FX is a managed industrial Ethernet switch engineered for seamless integration within GE PACSystems control architectures. Designed to operate as a high-reliability communications backbone, this switch supports deterministic data exchange across the control layer, I/O layer, and HMI layer — ensuring that every node in the automation hierarchy maintains stable, low-latency connectivity. Whether deployed in a centralized rack-based control cabinet or distributed across a multi-zone manufacturing floor, the 336A4940DNP517FX delivers the network consistency and diagnostic transparency that modern industrial automation demands.

In complex control environments, network infrastructure is not a peripheral concern — it is a foundational element of system performance. The 336A4940DNP517FX addresses this by providing managed switching capabilities that allow engineers to configure VLANs, monitor port-level traffic, and enforce Quality of Service (QoS) policies that prioritize time-critical control data over general-purpose traffic. This level of network governance is essential when integrating PACSystems RX3i CPUs, remote I/O drops, and PROFINET or EtherNet/IP devices within the same physical network segment.

From a system architecture perspective, the 336A4940DNP517FX occupies the communications layer between the PACSystems RX3i CPU310 or CPU315 and downstream I/O modules such as the IC694MDL654 discrete output module or IC694ALG220 analog input module. By maintaining deterministic Ethernet communication between these layers, the switch eliminates the packet collision and latency variability that unmanaged switches introduce — a critical advantage in high-speed process control and motion coordination applications.

The fiber optic port configuration of the 336A4940DNP517FX (FX designation) makes it particularly well-suited for installations where electrical noise immunity and long-distance segment runs are required. In environments such as petrochemical processing plants, steel mills, or large-scale water treatment facilities, copper Ethernet is often insufficient due to ground loop interference and cable run limitations. The FX variant resolves these constraints by supporting multimode fiber connections that extend reliable communication across distances that would otherwise require signal repeaters or media converters.

When integrated alongside the IC695ETM001 Ethernet communications module or the IC695PNC001 PROFINET controller, the 336A4940DNP517FX forms a cohesive communications fabric that supports both real-time control traffic and diagnostic data collection. This dual-purpose capability allows maintenance engineers to access device-level diagnostics through the same network infrastructure used for production control — reducing the need for dedicated maintenance networks and simplifying overall cabinet wiring.

For redundancy-critical applications, the 336A4940DNP517FX can be deployed in ring topologies using Media Redundancy Protocol (MRP) or Rapid Spanning Tree Protocol (RSTP), providing sub-50ms failover in the event of a link failure. This is particularly relevant in power generation, oil and gas, and mining applications where network downtime directly translates to production loss or safety risk. Pairing this switch with a redundant PACSystems RX3i CPU rack — incorporating dual IC695PSA040 power supplies — creates a fully fault-tolerant control node capable of sustaining operations through both controller and network-level failures.

The switch's DIN-rail mounting form factor and wide operating temperature range make it compatible with standard industrial control cabinet installations. It can be mounted adjacent to GE Series 90-30 or PACSystems RX3i backplanes without requiring additional enclosure space, and its compact profile allows integration into existing panel layouts without redesign. The 24VDC power input is compatible with standard industrial power supplies such as the IC693PWR321, ensuring straightforward power architecture alignment.

All units supplied by NANKMOS undergo pre-shipment functional testing, including port-level connectivity verification, VLAN configuration validation, and power input integrity checks. Each unit is shipped with a 12-Month Warranty covering manufacturing defects and operational failures under normal industrial service conditions. NANKMOS maintains ready inventory of the 336A4940DNP517FX to support urgent replacement requirements, scheduled maintenance windows, and new system commissioning projects across global industrial sites.

The 336A4940DNP517FX is most effectively deployed as the communications hub within a fully integrated PACSystems automation platform. At the control layer, it connects directly to the PACSystems RX3i CPU315 or CPU320, providing the high-speed Ethernet backbone required for real-time program execution and remote I/O scanning. The IC695ETM001 Ethernet communications module interfaces with the switch to extend controller connectivity to SCADA systems and engineering workstations, while the IC695PNC001 PROFINET controller leverages the switch's managed port infrastructure to coordinate distributed PROFINET device networks.

At the I/O layer, the switch facilitates communication between the CPU rack and remote I/O drops equipped with IC694MDL654 discrete output modules and IC694ALG220 analog input modules. These remote drops, mounted on IC694CHS392 expansion backplanes, rely on stable, low-jitter Ethernet communication to maintain synchronization with the main controller scan cycle. The 336A4940DNP517FX's QoS configuration ensures that I/O scan traffic receives priority over diagnostic and HMI data streams.

At the power layer, the switch operates from the same 24VDC bus supplied by IC693PWR321 or IC695PSA040 power supply modules, simplifying power architecture and reducing the number of distinct power rails required within the control cabinet. For HMI integration, the switch provides the network segment over which GE QuickPanel+ or third-party SCADA terminals communicate with the PACSystems controller, enabling real-time process visualization and operator intervention without dedicated HMI network infrastructure.

In redundancy architectures, the 336A4940DNP517FX is deployed in pairs, forming an MRP ring that connects dual CPU racks and their associated I/O drops. This configuration, combined with IC695RMX128 redundancy memory exchange modules, creates a fully fault-tolerant control node where both network and controller failures are handled transparently — maintaining production continuity without operator intervention.

Manufacturing & Discrete Production Lines: In automotive assembly and electronics manufacturing, the 336A4940DNP517FX serves as the Ethernet backbone connecting PACSystems RX3i controllers to robot controllers, servo drives, and vision systems. Its managed VLAN capability isolates production traffic from quality inspection data streams, preventing network congestion during high-throughput production cycles.

Power Generation & Utilities: In power plant distributed control systems, the FX fiber variant eliminates ground loop interference between control rooms and field switchgear panels separated by hundreds of meters. The switch's MRP ring topology provides the sub-50ms network failover required by IEC 61850 substation automation standards, ensuring protection relay coordination is never compromised by network events.

Petrochemical & Process Control: In refinery and chemical plant DCS architectures, the 336A4940DNP517FX connects PACSystems controllers to Modbus TCP field devices, flow computers, and safety instrumented system (SIS) gateways. Its wide operating temperature tolerance and DIN-rail form factor make it suitable for installation in field junction boxes and remote I/O panels located in classified hazardous areas (with appropriate enclosure).

Water Treatment & Infrastructure: Municipal water treatment SCADA systems rely on the switch's fiber connectivity to span long cable runs between pump stations and central control facilities. The managed port configuration allows network administrators to monitor link quality and detect cable degradation before it causes communication failures — a critical capability for 24/7 unattended remote sites.

Mining & Metals Processing: In underground mining and surface ore processing, the 336A4940DNP517FX provides the EMI-immune fiber backbone required in environments with heavy variable-frequency drives, arc furnaces, and high-current bus systems. Its robust construction and industrial temperature rating ensure reliable operation in dusty, high-vibration environments where commercial-grade switches fail prematurely.

Q1: Is the 336A4940DNP517FX compatible with both PACSystems RX3i and legacy Series 90-30 architectures? The 336A4940DNP517FX is primarily designed for PACSystems RX3i architectures utilizing the IC695ETM001 or IC695PNC001 communications modules. It can also support Series 90-30 systems equipped with IC693CMM321 Ethernet interface modules, provided the network is configured for standard EtherNet/IP or Modbus TCP communication. For mixed-architecture installations, VLAN segmentation is recommended to isolate legacy and modern control traffic. NANKMOS technical support can assist with compatibility verification prior to order placement.

Q2: What redundancy configurations are supported, and how does failover affect active control programs? The 336A4940DNP517FX supports RSTP and MRP ring redundancy topologies. In MRP ring configurations, network failover occurs in under 50 milliseconds — well within the tolerance of most PACSystems RX3i scan cycles, which typically range from 10ms to 100ms. When paired with IC695RMX128 redundancy memory exchange modules and dual CPU racks, both network and controller failover are handled transparently, with no interruption to active control program execution. This configuration is recommended for all Tier 1 critical process applications.

Q3: What does the 12-Month Warranty cover, and what is NANKMOS's stock availability for urgent replacement orders? The 12-Month Warranty provided by NANKMOS covers manufacturing defects, component failures, and operational malfunctions occurring under normal industrial service conditions from the date of shipment. Physical damage resulting from improper installation, overvoltage events, or environmental exposure beyond rated specifications is excluded. NANKMOS maintains ready inventory of the 336A4940DNP517FX to support both planned maintenance schedules and emergency replacement requirements. Orders placed before the daily cutoff are typically processed for same-day or next-business-day dispatch, with global shipping options available to minimize site downtime.