Description

The ABB LXN1604-6 3BHL000986P7000 is a high-performance central processing unit (CPU) module designed for the ABB AC 800M distributed control system—a cornerstone of modern industrial automation in power generation, oil & gas, water treatment, and heavy process industries. As part of the AC 800M M5xx series, this controller delivers robust real-time execution of complex control logic, advanced regulatory algorithms, and safety-critical functions with deterministic performance. The ABB LXN1604-6 3BHL000986P7000 features 6 MB of application memory, dual 10/100 Mbps Ethernet ports (for control network and engineering access), and native support for redundant configurations to ensure continuous operation in mission-critical environments.

Positioned as a mid-to-high-tier CPU within the AC 800M portfolio, the ABB LXN1604-6 3BHL000986P7000 supports IEC 61131-3 programming languages (including structured text, ladder logic, and function block diagrams) via ABB’s Control Builder M engineering suite. It seamlessly integrates with S800 and S900 I/O modules over redundant Profibus DP or redundant optical ModuleBus, enabling scalable architectures from compact skids to large plant-wide systems. With built-in diagnostics, secure firmware updates, and compliance with international standards (IEC 61508 SIL2, IEEE, and NERC CIP-ready), the ABB LXN1604-6 3BHL000986P7000 provides both operational reliability and cybersecurity resilience for demanding industrial applications.

ABB LXN1604-6 3BHL000986P7000

Technical Specifications

Parameter Name	Parameter Value
Product Model	LXN1604-6 3BHL000986P7000
Manufacturer	ABB
Product Type	AC 800M Programmable Logic Controller (CPU Module)
Processor	32-bit RISC, optimized for real-time control
Application Memory	6 MB RAM (battery-backed)
Execution Speed	Typical scan time: ~100 ms for 10,000 instructions
Communication Interfaces	2× 10/100 Mbps Ethernet (RJ45), 1× RS232 (service port)
Supported Networks	ModuleBus (optical/electrical), Profibus DP, Modbus TCP, OPC UA
Redundancy Support	Yes – full CPU and I/O redundancy (requires pair + synchronization link)
Operating Temperature	0°C to +60°C
Power Consumption	Max 10 W (from backplane)
Dimensions (W×H×D)	40 mm × 230 mm × 205 mm
Mounting	DIN rail or rack-mounted in AC 800M chassis

Main Features and Advantages

High availability through hardware redundancy:
The ABB LXN1604-6 3BHL000986P7000 supports full hot-standby redundancy—two identical CPUs synchronize application data in real time via a dedicated fiber-optic link. In the event of a failure, switchover occurs in <100 ms with no process interruption, making it ideal for power plants, refineries, and water pumping stations where downtime is unacceptable.

Large memory and fast execution for complex applications:
With 6 MB of application memory, the ABB LXN1604-6 3BHL000986P7000 can handle extensive control strategies, including cascade loops, sequence logic, and data logging. Its optimized RISC architecture ensures rapid execution of both discrete and analog control tasks, maintaining tight regulatory performance even under peak load.

Native integration with ABB’s ecosystem:
The module works natively with ABB’s S800/S900 I/O, HMI (e.g., Panel 800), drives (ACS880), and safety systems (AC 800M Safety). This deep integration reduces engineering time, simplifies diagnostics, and enables unified asset management through ABB Ability™ digital platforms.

Cybersecurity and compliance ready:
The ABB LXN1604-6 3BHL000986P7000 supports secure boot, firmware authentication, and role-based access control. It aligns with NERC CIP, IEC 62443, and other industrial security frameworks—critical for utilities and critical infrastructure operators facing stringent regulatory requirements.

Long lifecycle and global support:
As a mature product in ABB’s AC 800M family, the LXN1604-6 benefits from extended availability commitments and decades of field-proven reliability. ABB provides comprehensive documentation, migration paths, and technical support worldwide, ensuring sustainability for both new builds and legacy upgrades.

Flexible networking and interoperability:
Beyond native ModuleBus, the ABB LXN1604-6 3BHL000986P7000 supports open protocols like Modbus TCP and OPC UA, enabling seamless data exchange with third-party SCADA, historians, and enterprise systems—bridging OT and IT domains securely.

Application Field

The ABB LXN1604-6 3BHL000986P7000 is widely deployed in industries requiring high reliability, scalability, and regulatory compliance. In thermal and hydroelectric power plants, it controls boiler sequences, turbine governors, and switchyard interlocks—often in redundant pairs to meet grid stability mandates. Its deterministic response ensures safe shutdown during fault conditions.

In oil & gas upstream and midstream facilities, the ABB LXN1604-6 3BHL000986P7000 manages wellhead control panels (WHPs), pipeline pump stations, and compressor control. Integration with S800 I/O allows remote monitoring of pressure, temperature, and flow across vast geographic areas via fiber-optic ModuleBus.

For municipal water and wastewater treatment, the module orchestrates chemical dosing, clarifier sequencing, and sludge handling processes. Its ability to log historical trends and trigger alarms via Ethernet supports compliance with environmental reporting standards.

Even in mining and metals processing, where electromagnetic interference and dust are severe, the ABB LXN1604-6 3BHL000986P7000’s ruggedized design and optical communication ensure uninterrupted operation. Across all these sectors, the ABB LXN1604-6 3BHL000986P7000 serves as the intelligent, resilient core of automation systems that must run 24/7—safely, efficiently, and securely.

ABB LXN1604-6 3BHL000986P7000

Related Products

LXN1603-4 3BHL000985P7000: Lower-tier AC 800M CPU with 4 MB memory—suitable for smaller applications than LXN1604-6
LXN1605-8 3BHL000987P7000: Higher-end CPU with 8 MB memory and faster processor—used in very large or safety-intensive systems
PM866AK01 3BSE050190R1: Previous-generation AC 800M CPU—LXN1604-6 offers improved memory and Ethernet capabilities
CI854A 3BSE041444R1: Profibus DP communication module—often used alongside LXN1604-6 for I/O expansion
TK850V005 3BSE036344R1: Optical ModuleBus cable kit—for redundant CPU synchronization in LXN1604-6 systems
SA811F 3BSE040924R1: AC 800M safety CPU—complements LXN1604-6 in SIL2 applications
S800 I/O Modules (e.g., AI810, DO810): Standard field I/O—directly controlled by LXN1604-6 via ModuleBus or Profibus