Description
Detailed parameter table
| Parameter name | Parameter value |
| Product model | 2MLR-CPUH/T |
| Manufacturer | Honeywell |
| Product category | Industrial controller (PLC/CPU module) |
| Processing speed | 1.2 GHz 32-bit RISC processor |
| Memory | 8 GB flash, 2 GB RAM |
| Operating system | Honeywell proprietary real-time OS |
| I/O capacity | Up to 4096 digital points, 1024 analog points |
| Communication ports | 2 x Ethernet (10/100/1000 Mbps), 1 x RS-485, 1 x USB-C |
| Power requirements | 24 VDC ±10%, 50 W max |
| Operating temperature | -20°C to +60°C |
| Protection class | IP20 (enclosure), NEMA 1 |
| Certifications | CE, UL 508, ATEX, IECEx |
| Expansion slots | 4 x modular I/O slots |
| Dimensions | 180mm x 120mm x 80mm |
Honeywell 2MLR-CPUH/T
Product introduction
The Honeywell 2MLR-CPUH/T is a high-performance industrial controller designed to serve as the core of complex automation systems. As a flagship model in Honeywell’s MLR series, it combines powerful processing capabilities with robust reliability, making it suitable for demanding industrial environments where precision and uptime are critical.
The Honeywell 2MLR-CPUH/T integrates advanced computing power with flexible connectivity, enabling seamless control of diverse industrial processes. Its ability to handle thousands of I/O points—both digital and analog—makes it ideal for large-scale manufacturing lines, process plants, and infrastructure projects. By processing real-time data and executing control logic with minimal latency, the Honeywell 2MLR-CPUH/T ensures efficient operation, reduces manual intervention, and enhances overall system productivity.
Core advantages and technical highlights
High-speed processing: The Honeywell 2MLR-CPUH/T features a 1.2 GHz 32-bit RISC processor that executes complex control algorithms in microseconds. This speed is crucial for applications like high-speed packaging lines or continuous process industries, where even minor delays can disrupt production. The ample 8 GB flash and 2 GB RAM ensure smooth operation of large programs and data logging without performance degradation.
Scalable architecture: With support for up to 4096 digital and 1024 analog I/O points, the Honeywell 2MLR-CPUH/T adapts to systems of varying sizes. Its 4 modular expansion slots allow easy addition of specialized I/O modules (e.g., temperature, motion control), eliminating the need for complete controller replacement when upgrading. This scalability makes it a cost-effective choice for both small facilities and enterprise-level plants.
Reliable communication: Equipped with dual Gigabit Ethernet ports, the Honeywell 2MLR-CPUH/T supports redundant network configurations, ensuring uninterrupted data transfer in critical systems. It integrates seamlessly with Honeywell’s Experion PKS and other SCADA systems, as well as third-party devices via standard protocols like Modbus and OPC UA. The RS-485 port enables connection to legacy equipment, simplifying retrofits of older automation setups.
Industrial-grade durability: Built to withstand harsh conditions, the Honeywell 2MLR-CPUH/T operates reliably in temperatures from -20°C to +60°C. Its rugged design resists vibration and electromagnetic interference, common in factory floors and process plants. The IP20 rating protects internal components from dust, while compliance with ATEX and IECEx standards allows safe deployment in hazardous areas, such as chemical or oil and gas facilities.
Typical application scenarios
In automotive manufacturing, the Honeywell 2MLR-CPUH/T serves as the central controller for body-in-white assembly lines. It synchronizes robotic welding arms, conveyor systems, and quality inspection sensors, processing real-time data to adjust motion paths and cycle times. Its high I/O capacity manages hundreds of limit switches and actuators, ensuring precise alignment of car body components and reducing assembly errors.
Within chemical processing plants, the Honeywell 2MLR-CPUH/T controls batch reactors, mixing tanks, and material transfer systems. It monitors critical parameters like temperature, pressure, and chemical composition via analog inputs, executing PID loops to maintain optimal reaction conditions. The controller’s ATEX certification allows it to operate in zones with flammable vapors, while redundant Ethernet ensures continuous communication with the plant’s DCS for centralized monitoring.
In water and wastewater treatment facilities, the Honeywell 2MLR-CPUH/T coordinates filtration, pumping, and chemical dosing systems. It processes flow rate and water quality data to adjust valve positions and pump speeds, optimizing energy use while ensuring compliance with environmental regulations. Its ability to log historical data supports trend analysis, helping operators identify inefficiencies and plan preventive maintenance.
Honeywell 2MLR-CPUH/T
Related model recommendations
Honeywell 2MLR-CPUL/T: A lower-power variant of the Honeywell 2MLR-CPUH/T with reduced I/O capacity, ideal for small to medium-scale applications like food packaging lines.
Honeywell 2MLR-DI32: A 32-channel digital input module that expands the Honeywell 2MLR-CPUH/T‘s digital I/O capabilities, suitable for connecting sensors and limit switches.
Honeywell 2MLR-AO8: An 8-channel analog output module paired with the Honeywell 2MLR-CPUH/T to control valves, variable speed drives, and other analog devices.
Honeywell 2MLR-ETH-R: A redundant Ethernet module that enhances the Honeywell 2MLR-CPUH/T‘s network reliability in mission-critical systems.
Honeywell Experion PKS: A distributed control system that integrates with the Honeywell 2MLR-CPUH/T for large-scale process automation, offering advanced visualization and analytics.
Honeywell 51304653-100: A 24 VDC power supply module that ensures stable power delivery to the Honeywell 2MLR-CPUH/T in industrial environments with voltage fluctuations.
Installation, commissioning and maintenance instructions
Installation preparation: Mount the Honeywell 2MLR-CPUH/T in a clean, dry control cabinet with adequate ventilation. Ensure the ambient temperature remains within -20°C to +60°C and avoid proximity to high-voltage equipment to minimize EMI. Use the provided DIN rail clips or panel-mounting holes for secure installation. Verify the 24 VDC power supply is properly fused and grounded, with voltage within ±10% of nominal. Gather tools: screwdrivers, torque wrench (for terminal connections), and an Ethernet cable for initial configuration.
Maintenance suggestions: Inspect the Honeywell 2MLR-CPUH/T monthly for loose connectors or dust accumulation; use compressed air to clean vents if needed. Back up the controller’s program and configuration weekly to a secure location via USB-C or network. Check Ethernet and power connections quarterly for corrosion, especially in humid environments. If a fault occurs, refer to the diagnostic LED indicators (power, Ethernet, system status) to isolate issues. Replace expansion modules only when the controller is powered down, and ensure firmware updates are applied during scheduled maintenance to avoid downtime.
Service and guarantee commitment
The Honeywell 2MLR-CPUH/T comes with a 36-month warranty covering manufacturing defects and ensuring compliance with performance specifications. Honeywell guarantees rapid replacement of faulty units within 72 hours for critical applications, minimizing operational disruption.
Technical support includes 24/7 access to Honeywell’s global engineering team via phone and email, along with online resources like user manuals, firmware updates, and troubleshooting guides. Optional service contracts offer on-site commissioning, preventive maintenance, and priority technical assistance. Honeywell’s commitment to quality ensures the Honeywell 2MLR-CPUH/T delivers reliable performance throughout its 10-year design lifespan, with spare parts available for at least 15 years post-launch.
