DI 32 02A HIMA

DI 32 02A HIMA central processing unit

Product  Description：

HIMA Central Processing Units (CPUs), prominent within safety-related automation families like the HIMax and HIMatrix series, serve as the core computational engine for Safety Instrumented Systems (SIS). These safety CPUs are engineered explicitly to protect personnel, equipment, and the environment in high-risk process industries. Operating on a dedicated, fault-tolerant operating system, they execute safety-critical logic, monitor safety loops, and guarantee that industrial processes fail safely in the event of an emergency.

Product Parameters

The technical baseline of a HIMA Central Processing Unit is defined by its compliance with global safety standards and high-speed processing capabilities:

• Safety Integrity Level: Certified up to SIL 3 according to IEC 61508 and SIL 4 for specific railway applications, ensuring the highest level of functional safety.

• Architecture Topology: Utilizes advanced redundant architectures such as 1oo2D (One out of Two with Diagnostics) or XMR (Flexible Modular Redundancy) to maintain safety and availability simultaneously.

• Execution Response Time: High-speed processing capabilities with safety loop cycle times typically ranging from 2 milliseconds to 10 milliseconds, allowing for near-instantaneous emergency shutdowns.

• Communication Protocols: Integrated safety-related communication via safeethernet, alongside standard industrial protocols like Modbus TCP, Profinet, and OPC UA.

• Memory Capacity: Large-capacity non-volatile flash memory for secure safety program retention, accompanied by ECC (Error-Correcting Code) RAM to prevent data corruption.

• Hardware Self-Diagnostics: Built-in diagnostic coverage exceeding 99 percent, continuously checking the microprocessor, memory registers, and internal bus communication for hardware faults.

Product Advantages

HIMA CPUs are globally recognized for their independent safety focus and high system availability:

• Independent Safety and Availability: The unique redundancy management allows the CPU to lose internal components or companion modules due to faults while remaining online and fully protective, eliminating nuisance trips.

• Non-Interference Architecture: Safety functions and non-safety communication tasks are physically and logically segregated within the CPU, ensuring that network traffic from an external HMI cannot delay an emergency shutdown command.

• Certified Operating System: Runs a proprietary, multitasking operating system specifically developed for safety applications, which is inherently protected against common cybersecurity vulnerabilities and malware.

• Fast and Simple Programming: Configured using the SILworX engineering tool, which supports IEC 61131-3 languages like Function Block Diagram and Sequential Function Chart, simplifying compliance validation.

• Scalable Power: The modularity allows users to scale computational power from compact, standalone machines up to large, distributed plant-wide safety networks using the same core CPU technology.

Product Applications

These safety central units are deployed where process failure could result in catastrophic consequences:

• Emergency Shutdown Systems: Acting as the central brain that shuts down high-pressure valves and isolates fuel lines during a critical process upset in refineries.

• Burner Management Systems: Controlling the safe ignition, monitoring, and shutdown of large industrial boilers, furnaces, and thermal oxidizers.

• Fire and Gas Systems: Processing inputs from flame and toxic gas detectors to automatically trigger localized suppression systems and plant alarms.

• Turbomachinery Control: Providing high-speed overspeed protection and surge control for massive compressors, steam turbines, and gas turbines.

• Pipeline Management Systems: Monitoring pressure gradients across thousands of miles of oil or gas pipelines to rapidly detect and isolate leaks.

Important Precautions

To maintain the safety certification and operational integrity of the HIMA CPU, the following precautions must be strictly observed:

• Strict Change Management: Any modification to the safety program executed by the CPU requires a full safety review, re-verification, and re-validation within the engineering software to maintain SIL 3 certification.

• Dedicated Safety Power Supply: The CPU must be powered by an ultra-stable, safety-rated 24V DC power supply equipped with overvoltage and undervoltage protection to prevent processing resets.

• Access Control and Passwords: Secure the CPU physically behind locked cabinet doors and enable strict software password protections to prevent unauthorized persons from forcing safety registers or changing system logic.

• Ambient Thermal Limits: Ensure the control enclosure provides adequate ventilation or climate control to keep the CPU within its specified operating temperature range, as excessive heat accelerates component aging.

• Firmware Consistency: When running redundant CPU pairs, verify that both units utilize identical firmware versions. Incompatible firmware will prevent synchronization and disable the module's redundancy capabilities.

The structure and details of the product：

Our services：

Shipping Port:  China

Payment: Bank of Chicago, Bank of Singapore

Express cooperation: fedex, DHL, UPS and your express account

Service: Professional Sales provides 24 hours /7 days online service

Warranty: one year

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JUSTWELL PTE. LTD

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