Main Technical Parameters

• Power Supply: 24 V DC (input voltage range: 0 ~ 55 V DC)
• Processor: Dual Intel 386EX 32-bit microprocessors with a clock speed of 25 MHz (some documents indicate it is based on ARM Cortex-A9 with a maximum clock speed of 1.2 GHz)
• Memory: For each processor: 1 MB Flash-EPROM (for operating system) + 1 MB Flash-EPROM (for user programs) + 1 MB SRAM (for data)
• I/O Channels: 8 digital inputs, 8 digital outputs (can also be configured as analog I/O)
• Communication Protocols: Modbus, PROFIBUS, Ethernet/IP, Safety-Ethernet (supports Ethernet-based safety communication)
• Operating Temperature: -40 °C ~ +85 °C (some documents mark it as -40 °C ~ +70 °C)
• Installation Method: DIN-Rail mounting, with dimensions of approximately 150 mm × 100 mm × 50 mm
• Other Features: High-availability design, redundant power supply, remote diagnosis and monitoring, support for online modification and expansion

Product Features

• Dual Redundant Microprocessors: Two synchronously operating CPUs provide fault tolerance, ensuring the system can still run safely in case of a single-point failure.
• Compliance with SIL 3 / Cat. 4: Certified to IEC 61508 and IEC 62061, meeting the strictest safety integrity requirements.
• Flexible I/O Configuration: Supports hot-swapping of digital, analog, and fieldbus modules, facilitating rapid expansion according to on-site needs.
• Multi-Protocol Compatibility: Built-in industrial communication protocols such as Modbus, PROFIBUS, and Ethernet/IP, enabling seamless integration into existing control networks.
• Remote Monitoring and Diagnosis: Provides user-friendly configuration tools and remote diagnosis functions to reduce on-site maintenance costs.
• High Reliability: Wide operating temperature range, resistance to vibration and electromagnetic interference, suitable for harsh industrial environments.

Structure and Composition

• CPU Core Board: Dual Intel 386EX (or ARM Cortex-A9) microprocessors, and clock synchronization circuit.
• Storage Sub-board: Flash-EPROM and SRAM, used for system firmware, user programs, and operating data respectively.
• Power Supply Module: Internal redundant power management, supporting 24 V DC input and providing regulated output.
• Communication Interface Board: Provides multiple fieldbus ports such as Ethernet, PROFIBUS, and Modbus.
• I/O Expansion Slots: Used for inserting digital, analog, or dedicated function modules (e.g., safety relays, valve drives).
• Enclosure and Installation Accessories: DIN-Rail mounting structure, equipped with protective covers and heat sinks.

Typical Application Fields

• Safety Instrumented Systems (SIS) in the chemical, petroleum, and natural gas industries
• Process safety control in power plants and nuclear power stations
• Safety monitoring for continuous production processes such as papermaking, food, and beverages
• Explosion-proof and leak-proof systems for critical facilities
• Any industrial automation project requiring SIL 3 level safety integrity

Key Points for Installation and Maintenance

• Pre-Installation Inspection: Confirm that the DIN-Rail installation position is firm and the power supply voltage complies with the 24 V DC range.
• Wiring Specifications: Correctly wire the input/output channels and communication ports according to the module manual, ensuring good signal line shielding and grounding.
• Software Configuration: Use the configuration tool provided by HIMA to set CPU parameters, redundancy settings, and I/O mapping, and perform offline simulation verification after completion.
• Function Testing: After power-on, perform self-test to check whether the redundant CPU synchronization status, communication connectivity, and safety functions (e.g., fault switching) are normal.
• Regular Maintenance: Conduct on-site inspections every 6 ~ 12 months, focusing on checking whether there is dust accumulation on power terminals and heat sinks, and whether interface connections are loose.
• Remote Diagnosis: Use the module’s remote monitoring function to download log files regularly and analyze potential abnormalities or performance degradation trends.
• Replacement and Upgrade: When replacing the module, keep the same hardware version number to avoid compatibility issues; if firmware upgrade is required, be sure to complete it during the shutdown window and make a rollback backup.