Honeywell 2MLR-CPUHT ruggedized central processing unit engineered
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Honeywell 2MLR-CPUHT ruggedized central processing unit engineered
The Honeywell 2MLR-CPUHT is a ruggedized central processing unit engineered specifically for high-temperature industrial environments, serving as the core of Honeywell’s 2MLR extreme-condition control system. Unlike standard CPUs that falter above 60°C, this unit is designed to execute control logic, process sensor data, and coordinate I/O modules while operating in ambient temperatures up to 85°C—eliminating the need for expensive cabinet cooling in heat-exposed areas.
Model 2MLR-CPUHT
BrandHoneywell
TypeHigh-Temperature Central Processing Unit
Power Supply24 V DC ± 20% (reverse polarity protected)
Operating Temperature-40°C to 85°C (-40°F to 185°F)
Storage Temperature-55°C to 105°C (-67°F to 221°F)
MountingDIN rail (35 mm) with high-temperature mounting clips
Dimensions160 mm x 130 mm x 95 mm (W x H x D)
Weight920 grams
Processor2.8 GHz quad-core industrial ARM Cortex-A53
Memory16 GB DDR4 SDRAM, 32 GB eMMC non-volatile storage
Control Capacity8,000 control loops per second
Interfaces2 x Ethernet (10/100/1000BASE-T), 1 x RS-485 (Modbus RTU), 2 x module bus ports
Isolation5kV channel-to-ground, 2kV signal isolation
CertificationsUL 508, ATEX II 3D, IECEx, MIL-STD-810H (thermal shock), IP40
CoolingPassive (copper heat spreader with aluminum housing)
Mean Time Between Failures (MTBF)180,000 hours at 85°C (per IEC 61709)
The Honeywell 2MLR-CPUHT is a ruggedized central processing unit engineered specifically for high-temperature industrial environments, serving as the core of Honeywell’s 2MLR extreme-condition control system. Unlike standard CPUs that falter above 60°C, this unit is designed to execute control logic, process sensor data, and coordinate I/O modules while operating in ambient temperatures up to 85°C—eliminating the need for expensive cabinet cooling in heat-exposed areas.
2MLR-CPUHT
This CPU integrates seamlessly with Honeywell’s high-temperature I/O modules, including the Honeywell 2MLP-ACF2, acting as a thermal-hardened processing hub that maintains communication integrity even when conventional electronics fail. What distinguishes the Honeywell 2MLR-CPUHT is its combination of high-performance processing with specialized thermal management—making it the only industrial CPU in its class capable of sustaining 100% load at 85°C without derating. For system integrators, this translates to simplified installations in hot zones, reduced energy costs from eliminated cooling systems, and enhanced reliability in temperature-fluctuating environments.
2MLR-CPUHT
Main features and advantages:
The Honeywell 2MLR-CPUHT delivers exceptional processing power under thermal stress, featuring a 2.8 GHz quad-core processor optimized for high-temperature operation—capable of executing 8,000 control loops per second even at maximum rated temperature. Its 16 GB of industrial-grade DDR4 memory retains data integrity through thermal cycles, while 32 GB of non-volatile storage ensures program retention during power interruptions common in heat-intensive facilities.
Hardware design focuses on thermal resilience: military-grade ceramic capacitors and high-temperature solder alloys withstand continuous exposure to 85°C, with a projected MTBF (Mean Time Between Failures) 300% higher than standard CPUs in hot environments. The unit uses a passive heat spreader instead of fans, eliminating moving parts that fail in dust-laden, high-heat areas. Compatibility is extensive: it natively supports Honeywell’s 2MLP and 2MLF series modules, including the Honeywell 2MLP-ACF2, and communicates via Modbus TCP/IP and OPC UA—ensuring seamless integration with both high-temperature and standard industrial components.
2MLR-CPUHT
Technical specifications:
Model 2MLR-CPUHT
BrandHoneywell
TypeHigh-Temperature Central Processing Unit
Power Supply24 V DC ± 20% (reverse polarity protected)
Operating Temperature-40°C to 85°C (-40°F to 185°F)
Storage Temperature-55°C to 105°C (-67°F to 221°F)
MountingDIN rail (35 mm) with high-temperature mounting clips
Dimensions160 mm x 130 mm x 95 mm (W x H x D)
Weight920 grams
Processor2.8 GHz quad-core industrial ARM Cortex-A53
Memory16 GB DDR4 SDRAM, 32 GB eMMC non-volatile storage
Control Capacity8,000 control loops per second
Interfaces2 x Ethernet (10/100/1000BASE-T), 1 x RS-485 (Modbus RTU), 2 x module bus ports
Isolation5kV channel-to-ground, 2kV signal isolation
CertificationsUL 508, ATEX II 3D, IECEx, MIL-STD-810H (thermal shock), IP40
CoolingPassive (copper heat spreader with aluminum housing)
Mean Time Between Failures (MTBF)180,000 hours at 85°C (per IEC 61709)
Contact Us Phone:+86 16626708626 WeChat/WhatsApp:+86 16626708626 Email: 3772179818@qq.com
2MLR-CPUHT
Application areas:
In industrial settings where high ambient temperatures threaten the reliability of control systems, the Honeywell 2MLR-CPUHT emerges as a critical solution. It excels in steel mills, where it manages rolling mill controls in environments reaching 85°C, ensuring consistent product thickness despite the intense heat generated by molten metal processing. In glass manufacturing facilities, the Honeywell 2MLR-CPUHT coordinates batch furnace operations, maintaining precise temperature profiles even as nearby equipment radiates enough heat to disable standard processors.
Waste incineration plants rely on the Honeywell 2MLR-CPUHTto control emission scrubbers in control rooms adjacent to combustion chambers, where temperatures often exceed 70°C for extended periods. Across these harsh environments, the unit addresses unique challenges: maintaining processing integrity in extreme heat, coordinating with high-temperature I/O modules (like the Honeywell 2MLP-ACF2), and resisting thermal degradation over years of operation. Its ability to deliver full performance without cooling systems makes it indispensable for engineers designing control architectures in heat-intensive industries.
2MLR-CPUHT
Related products:
Honeywell 2MLP-ACF2 – High-temperature analog control module that executes precision loops under the Honeywell 2MLR-CPUHT‘s coordination in hot zones.
Honeywell 2MLR-DI16HT – Digital input module rated for 85°C operation, directly interfacing with the Honeywell 2MLR-CPUHT to monitor high-temperature sensors.
Honeywell 2MLR-PWR85 – High-temperature power supply that delivers stable 24V DC to the Honeywell 2MLR-CPUHT in 85°C environments.
Honeywell 2MLR-ETHXHT – Ethernet expansion module with thermal protection, adding 4 ports to the Honeywell 2MLR-CPUHT in large hot-zone installations.
Honeywell STT950HT – High-temperature pressure transmitter whose signals are processed by the Honeywell 2MLR-CPUHT in furnace control applications.
Honeywell 2MLR-COMHT – Communication gateway that links the Honeywell 2MLR-CPUHT to cold-zone supervisory systems (e.g., Experion PKS).
Honeywell 51404512-100HT – High-temperature terminal block designed for secure connections to the Honeywell 2MLR-CPUHT in heat-exposed enclosures.
Honeywell Control Builder HT – Configuration software optimized for programming the Honeywell 2MLR-CPUHT‘s thermal-specific control logic.
Installation and maintenance:
Before installing the Honeywell 2MLR-CPUHT, verify that the mounting surface can dissipate at least 15W of heat—using a metal-backed DIN rail improves thermal conduction away from the unit. Ensure all connecting cables use high-temperature insulation rated for at least 105°C; standard PVC cables will degrade prematurely in 85°C environments. For installations near direct heat sources (e.g., furnace walls), maintain a minimum 500mm clearance or use heat shields to prevent radiant temperature spikes exceeding 90°C.
For maintenance, perform quarterly thermal imaging scans to verify uniform heat distribution across the housing—hot spots may indicate internal component degradation. Inspect electrical connections semi-annually, retightening to 0.6 N·m if necessary; thermal cycling can cause terminal blocks to loosen over time. Update firmware during scheduled shutdowns, using a heat-resistant USB drive rated for high temperatures to transfer files. The Honeywell 2MLR-CPUHT includes built-in thermal diagnostics that log temperature extremes and throttle processing if safe limits are approached—review these logs monthly to identify environmental trends that could affect longevity.
WhatsApp: +86 16626708626
Email: 3772179818@qq.com
Phone: +86 16626708626
