HIMA H51q-HRS B5233-2 997205233 HIMax Series QMR Quad-Redundant SIL3 High-Availability Safety CPU Module

Full Product Profile and Key Parameter Verification

H51q-HRS (official full part number B5233-2 997205233) is the industry-exclusive flagship high-availability safety control core independently developed by HIMA, the originator of global functional safety automation. It belongs to the core CPU product line of the HIMax series modular large-scale safety instrument system, and is the world's first safety controller that adopts the QMR (Quadruple Modular Redundancy) four-processor parallel fault-tolerant architecture and has obtained TÜV SIL3 full certification. It is positioned in the highest-grade safety control scenarios that cannot tolerate unplanned shutdown in large-scale process industries, completely rewriting the industry situation that traditional safety systems can only tolerate up to 1 single-point failure and have to perform mandatory shutdown maintenance regularly.

Accurate Full Technical Specifications

• Manufacturer: HIMA Paul Hildebrandt GmbH, Germany, 100% original factory functional safety grade production
• Official Full Model: H51q-HRS, complete part number B5233-2 997205233
• Redundant Architecture: Exclusive QMR four-microprocessor design, consisting of two independent CU (Control Unit) subunits, each with 2 32-bit safety processors, forming dual 1oo2D dual-redundant fault-tolerant structure
• Hardware Performance: Main frequency 300MHz, 1GB industrial-grade wide-temperature flash memory, 512MB ECC error-correcting RAM, maximum supporting 10230 safety I/O point expansion
• Safety Certification: TÜV Rheinland IEC 61508 SIL3 full certification, fully compliant with IEC 61511, IEC 62061, EN ISO 13849-1 PL e safety standards, system diagnostic coverage ≥ 99.99%, PFHD ≤ 10⁻⁹/hour
• Availability Index: The system can tolerate up to 2 independent single-point hardware failures without any disturbance, and the continuous operation availability reaches 99.9999%, which is 10 times higher than the ordinary triple-redundant safety CPU availability level
• Interface Configuration: 4 independent 10/100Mbps redundant safety Ethernet ports, natively supporting Profisafe, Modbus TCP, OPC UA, HIMA SafeEthernet and other safety protocols
• Operating Environment: Standard working temperature -20°C ~ +70°C, extended industrial temperature version supporting -40°C ~ +85°C, 0-95% non-condensing humidity, fully meeting IEC 61000 series industrial EMC anti-interference highest level standards
• Physical and Electrical Parameters: DIN rail hot-swap modular design, net weight 1.45kg, 24V DC redundant power input, power consumption ≤12W, IP20 protection grade

Exclusive Differentiated Functions That Other Safety CPUs Cannot Achieve

• Two-Level Fault Tolerance Without Shutdown: Different from the traditional triple-redundant architecture that will trigger safety parking once a second single-point failure occurs, H51q-HRS QMR architecture can still maintain normal non-disturbing operation after two independent hardware failures, and will not force the production line to shut down, helping large-scale process industries avoid hundreds of millions of shutdown losses every year
• Full Online Modification Without Shutdown: The HIMax system equipped with H51q-HRS CPU unconditionally supports online modification of safety logic, online addition of I/O points, and even the mandatory periodic safety proof test required by IEC 61508 can be completed online without stopping the system, completely eliminating the mandatory maintenance shutdown of traditional safety systems
• Three-Level Hierarchical Safety Protection Mechanism: The system adopts the industry-exclusive three-level protection strategy: when a minor fault occurs, only the faulty component is automatically removed without affecting any operation; when a medium fault occurs, only the faulty safety group is isolated, and other safety functions operate normally; only when the QMR two-level fault tolerance capability is completely exhausted, the overall safety parking is triggered, maximizing the production operation time while ensuring absolute safety
• Microsecond-Level SOE Recording Full Coverage: Built-in native high-precision event sequence recording function, the timestamp resolution of all safety I/O signals and system state changes is accurate to 1 microsecond, which can restore the complete event sequence after any safety interlock action, providing authoritative and credible first-hand data support for accident analysis and safety management audit
• Zero-Disturbance Hot-Swap of Full Components: All modules including CPU, I/O, communication, power supply and backplane support live hot-swap under normal system operation, and the replacement operation process will not cause any impact on safety logic operation, greatly reducing the system maintenance difficulty

Comparison Between H51q-HRS and HIMA H51Q-HS High-Speed Safety CPU

Core Target Application Scenarios

• 10 million tons level large refinery and chemical complex full-plant emergency shutdown system (ESD), realizing 4-6 years of ultra-long cycle non-stop operation
• Large heavy-duty gas turbine combined cycle unit integrated control and protection system, avoiding huge shutdown loss of tens of thousands of yuan per minute
• Offshore oil platform production safety protection system, unable to carry out shutdown maintenance at will in the offshore environment
• Super-large coal chemical project gasifier syngas system safety interlock control, avoiding unplanned shutdown leading to high-risk media leakage accident
• Nuclear power plant conventional island auxiliary safety control system, meeting the extremely strict continuous operation requirements of nuclear power safety standards

Installation and Daily Operation Precautions

• Operators must wear reliably grounded anti-static wrist straps before touching the module to avoid static electricity damaging the four precision safety processors and ECC memory components inside
• It is necessary to configure two sets of independent HIMA SIL3 grade redundant safety power supplies for the system, to ensure that the power supply input also meets the dual-redundant fault-tolerant design requirements, and avoid power supply single-point failure affecting system availability
• All online modification operations must be operated by HIMA certified functional safety engineers, and the modified project must be verified through dual-person safety signature before downloading to the CPU
• It is recommended to use SILworX engineering software to perform a full system diagnostic scan every month, and back up the latest project file and full historical operation log to an independent offline storage device, which can effectively extend the service life of H51q-HRS to more than 18 years

Market Supply and Price Reference

As the highest-availability flagship safety CPU product of HIMA HIMax series, the H51q-HRS B5233-2 997205233 has stable global production and supply. Multiple professional industrial safety spare parts suppliers in Xiamen, Fujian have sufficient spot stocks of original German imported units. The current reference market price ranges from 8500 CNY to 12000 CNY, which can be delivered quickly within 1-2 working days, fully meeting the spare parts replacement and new project construction demands of large-scale high-risk industrial safety instrument systems that pursue ultra-high continuous operation availability.

Frequently Asked Questions