ABB LXN1604-6 3BHL000986P7000 Original CEX-bus Switch Full Product Introduction

(Word count: around 1000) ABB LXN1604-6 with part number 3BHL000986P7000 is an all-in-one industrial integrated hardware developed exclusively by ABB for the System 800xA distributed process control platform. This unit combines a deterministic CEX-bus communication switch and a high-power industrial DC power supply in a single compact housing, serving as the core communication and power backbone for AC 800M controllers, S800 remote I/O stations, ABB variable frequency drives and field measuring instruments. Unlike separated switches and power modules on the market, this integrated design optimizes cabinet layout, reduces wiring complexity and lowers the total failure points of the whole control system. We supply brand new original ABB units with abundant spot inventory, supporting fast order processing and worldwide global shipping to clients engaged in petrochemical, power generation, metallurgy, water treatment and intelligent manufacturing automation projects.

Complete Technical Specifications

In terms of power supply parameters, the module adopts a universal wide-range dual input design compatible with global industrial power grids. The AC input range covers 85–264 VAC with a frequency band of 47Hz to 63Hz, while the DC backup input supports 90–350 VDC to handle emergency power switching. Its rated output reaches 24.7 VDC, 20 A and total 500W steady power supply, sufficient to drive multiple communication boards, encoder modules and Ethernet transceivers inside DCS cabinets. The internal LLC resonant circuit delivers energy conversion efficiency above 90%, which cuts down continuous heat generation during 24/7 non-stop operation. The reinforced 3kV AC isolation between input and output circuits blocks high-frequency interference from nearby inverters and motors. The industrial MTBF value exceeds 50,000 hours, meeting long-term stable operation standards for heavy industrial sites.
For communication and switching parameters, the core CEX-bus cyclic extended bus delivers hard real-time deterministic transmission with sub-millisecond latency and negligible jitter, which is the foundation of closed-loop precise process control. Equipped with multiple galvanically isolated Gigabit Ethernet RJ45 ports supporting 10/100/1000Mbps auto-adaptive transmission, the switch achieves a total switching capacity of 12Gbps and forwards data at 8.9Mpps. It stores a 4K MAC address table and supports 9.6KB jumbo frames for mass transmission of process curve and alarm data. The hardware chip fully supports RSTP rapid spanning tree protocol, realizing network fault recovery within 20ms to avoid production halt caused by broken cables or damaged ports. It is compatible with mainstream industrial communication protocols including Modbus TCP, PROFINET RT and EtherNet/IP, enabling seamless data exchange between controllers, frequency converters and on-site analyzers. Built-in SNMP monitoring function synchronizes port status, error records and fault logs to System 800xA HMI for rapid troubleshooting.
The module carries comprehensive multi-level circuit protection mechanisms to resist various field faults. Over Voltage Protection (OVP) cuts off DC output immediately once the voltage exceeds the safety threshold to protect expensive main control boards and Ethernet chips. Over Current Protection (OCP) limits surge current generated by motor startup and long-term overload up to 120% rated load. Auto-recovery Short Circuit Protection (SCP) stops output under wiring short-circuit and restores normal operation automatically after the fault is cleared without permanent hardware damage. Additional thermal shutdown protection prevents burnout under poor cabinet ventilation. Meanwhile, integrated EMC filter circuits suppress harmonic noise produced by frequency conversion equipment to guarantee stable CEX-bus signal transmission.
Mechanical and environmental indicators fully adapt to harsh industrial working conditions. The standard TS35 DIN rail clip structure allows quick installation inside control cabinets without extra brackets. The whole machine weighs around 0.5kg with compact dimensions of 194 mm × 113.6 mm × 138 mm, saving valuable cabinet space. Its working temperature range spans -25℃ to +70℃ for continuous operation, and the storage temperature ranges from -40℃ to +85℃. The PCB board adopts conformal coating technology to resist dust, moisture and corrosive gas, and the whole unit passes IEC 60068 anti-vibration and shock tests for rolling mills, pumping stations and mining workshops. The protection grade is IP20 for indoor cabinet use, and it holds authoritative certifications including CE, UL 5085 and RoHS, with SIL2 functional safety qualification for safety interlock control loops. Hot-swap design permits module replacement without shutting down the entire DCS system, minimizing production downtime during routine maintenance and emergency replacement.

Core Product Advantages & Our Supply Strength

First of all, this genuine ABB original CEX-bus switch boasts perfect compatibility with the full System 800xA ecosystem. It matches all AC 800M controller models, connects multiple S800 I/O racks and realizes synchronous control of dozens of ABB ACS series drives through the deterministic bus. Engineers can complete one-click parameter configuration via Control Builder M software without extra driver development, greatly shortening project debugging cycles. The integrated power and communication unit reduces spare part categories for factory inventory management, lowering long-term maintenance costs.
Second, our supply advantages bring great convenience to global buyers. We maintain large spot inventory of ABB LXN1604-6 3BHL000986P7000 with no long lead time. Once orders are confirmed, we arrange packaging and shipment within the same working day, cooperating with mature international logistics channels to achieve fast global shipping covering Southeast Asia, Europe, Middle East, North America and other regions. Every delivered product is factory sealed new original without refurbishment or second-hand parts, accompanied by a 12-month global quality warranty. Our professional automation technical team provides free remote consultation on cabinet matching, network topology layout and fault diagnosis support after sales.
In practical industrial applications, this module acts as the central communication hub of high-availability DCS networks in thermal power plants, hydropower stations, oil refineries, chemical reactors, metallurgical rolling production lines, sewage treatment plants and pharmaceutical batch workshops. It handles real-time transmission of critical interlock signals, flow pressure analog data and drive speed feedback, ensuring the whole automation system runs safely and continuously. Whether for new DCS cabinet assembly, old control network renovation or emergency spare part replacement for broken modules, ABB LXN1604-6 3BHL000986P7000 original CEX-bus switch is the reliable standard choice for industrial process control projects worldwide.