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HIMA H7020 Controller Series
HIMA H7020
1. Overview
HIMA H7020 is part of the HIMA H-Series safety controller family, serving as the core control unit of Safety Instrumented Systems (SIS) with SIL 3 / PL e rating for high-risk industries such as process industry, energy, and electric power. It adopts a modular design, is compatible with the IEC 61508/61511 standards, and can realize real-time monitoring of hazardous processes, fault diagnosis, and Emergency Shutdown (ESD) functions.
2. Main Technical Parameters
| Parameter | Description |
|---|---|
| Safety Integrity Level | SIL 3 / PL e (compliant with IEC 61508/61511) |
| Operating Temperature | –25 °C ~ +70 °C (industrial-grade extension available as an option) |
| Power Supply | 24 V DC ± 10% (redundant dual power supplies) |
| Protection Class | IP20 (for DIN rail mounting) |
| Communication Interfaces | Modbus RTU, PROFIBUS DP, PROFINET, Ethernet/IP, OPC UA (available as options) |
| I/O Capacity | Up to 64 digital I/O points (analog I/O expansion modules available as options) |
| Redundant Structure | Dual CPUs, dual power supplies, dual buses (hot standby) |
| Diagnostic Functions | Online self-test, fault recording, alarm logging, remote diagnosis |
| Certifications | CE, UL, ATEX Ex-i (Zone 1) |
3. Product Features
- High Reliability: The dual redundant hardware structure and fanless heat dissipation design ensure 99.999% availability.
- Modular Expansion: Supports sub-modules for I/O, communication, and power supply that are compatible with DIN rails, allowing flexible configuration based on requirements.
- Comprehensive Safety Functions: Provides Safety Function Tree (SFT) configuration, safety thresholds, failover, Emergency Shutdown (ESD), and more.
- Compliance with International Standards: Meets safety and explosion-proof requirements such as IEC 61508/61511, EN 50128, and ATEX Ex-i.
- Easy Maintenance: Built-in diagnostic and logging functions, supporting remote monitoring and OTA (Over-the-Air) software updates.
4. Structure and Composition
- Host Frame: Dual CPUs, dual power supplies, system bus (redundant)
- I/O Sub-modules: Digital input/output, analog input/output, counter/pulse modules (available as options)
- Communication Modules: Modbus, PROFIBUS, PROFINET, Ethernet/IP, OPC UA, etc.
- Power Supply Modules: 24 V DC redundant power supply, with power monitoring and fault switching
- Safety Function Unit: Safety thresholds, fault diagnosis, safety logs, safety timers
5. Typical Application Fields
| Industry | Specific Scenarios |
|---|---|
| Petrochemical | Refining equipment, ethylene cracking, storage tank safety monitoring |
| Natural Gas | Gas transmission pipelines, compression stations, LNG receiving stations |
| Electric Power | Generator sets, substation automation, power distribution network safety |
| Pharmaceutical/Biotechnology | Continuous production lines, cleanroom safety control |
| Iron and Steel/Cement | High-temperature furnaces, pelletizing machines, coal mill emergency shutdown |
| Transportation/Rail Transit | Metro signal safety, tunnel ventilation systems |
| Others | High-risk processes such as papermaking, food processing, and offshore platforms |
6. Key Points for Installation and Maintenance
Installation
- Fix the device using DIN rails in accordance with the instruction manual, ensuring the rack is level and sufficient heat dissipation space is reserved.
- Connect the 24 V DC dual power supplies, and check the polarity and voltage range.
- Insert sub-modules (such as I/O, communication, and power supply modules) as required, and ensure the card slots are locked securely.
- Perform a system self-test after wiring is completed to confirm that the status of all modules is “OK”.
Commissioning
- Use the engineering software provided by HIMA (e.g., HIMA ConfigTool) to configure the Safety Function Tree (SFT), set thresholds, and program the failover logic.
- Verify the safety logic through Hardware-in-the-Loop (HIL) field simulation to ensure it meets the SIL 3 calculation requirements.
Daily Maintenance
- Regular Inspection: Check the power supply, heat dissipation, connection terminals, and module locking status every 6 months.
- Diagnostic Logs: Use the built-in diagnostic function to export fault logs and analyze potential trends.
- Software Updates: Update the firmware via OTA or USB during shutdown windows to keep up with the latest security patches.
- Spare Parts Management: It is recommended to keep spare dual power supplies, key I/O modules, and communication cards in stock for quick replacement.
Safety Precautions
- Installation and maintenance work must be carried out by engineers with SIL 3 qualification or service providers certified by HIMA.
- Any modifications require re-conducting the Safety Integrity Level assessment (SIL calculation) and updating the technical documents.
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