The HIMAF8650X is a SIL 3–certified central processor module specifically designed for the HIMA H51q‑MS/HS/HRS safety system. As a core component of HIMA’s safety instrumented systems (SIS), the HIMA F8650X uses two synchronized Intel 386EX 32‑bit CPUs operating at 25 MHz, with dedicated memory for the operating system, user program, and data. It also features isolated RS485 communication ports, a 4‑digit diagnostic interface, and a safety watchdog output, and it supports Ethernet communication via the compatible HIMA F8627X communication module. Since it is engineered for high-integrity process safety, the HIMA F8650X is ideal for critical applications requiring SIL 3 compliance, such as emergency shutdown and fire & gas systems. For more details on HIMA’s safety system ecosystem, you can visit the official HIMA website (note: the webpage currently fails to parse, please try again later).
Safety & System Compatibility of HIMA F8650X
Safety classification: SIL 3 (IEC 61508) – the highest safety integrity level for many industrial applications
Designed exclusively for: H51q‑MS, H51q‑HS, H51q‑HRS safety systems (compatible with HIMA’s modular PES platform)
Fail‑safe architecture: Dual cross‑monitored processors ensure reliable fault detection and safe shutdown
Advanced features: It supports self‑configuration and ELOP II TCP from operating system version BS41q/51q V7.0‑8. For more information about HIMA OS versions, you can refer to the relevant documentation (note: the webpage currently fails to parse, please try again later).
Processor & Performance of HIMA F8650X
TheHIMA F8650X uses dual Intel 386EX 32‑bit microprocessors, which are clock-synchronized to ensure consistent and deterministic performance. With a clock frequency of 25 MHz, the module delivers real-time response for safety-related control tasks—critical for applications where even minor delays could lead to hazardous situations. Additionally, the dual-processor design provides redundant operation, and it cross-monitors to detect any processor malfunctions and immediately trigger a safe state.
Memory Configuration of HIMA F8650X (per processor)
Each processor in theHIMA F8650X has dedicated memory to ensure independent operation and data integrity. Specifically:
OS Flash‑EPROM:1 MB – stores the operating system, ensuring stable and reliable module operation
User program Flash‑EPROM: 1 MB – holds the safety logic and application programs (usage depends on OS version)
Data SRAM: 1 MB – provides temporary storage for real-time data and system variables
Interfaces & Signal Description of HIMA F8650X (RS485)
The HIMA F8650X comes with 2 × galvanically isolated RS485 serial interfaces, which are designed to resist industrial noise and ensure reliable communication. Below is the full pinout for the RS485 ports, which is critical for proper wiring and integration:
Pin 1: Not used
Pin 2: RP – 5 V decoupled by diodes (auxiliary power)
Pin 3: A/A’ – RxD/TxD-A (Receive/Transmit Data A)
Pin 4: CNTR-A – Control signal A
Pin 5: C/C’ – DGND (Data Ground)
Pin 6: VP – 5 V positive pole of power supply
Pin 7: Not used
Pin 8: B/B’ – RxD/TxD-B (Receive/Transmit Data B)
Pin 9: CNTR-B – Control signal B
Ethernet Communication for HIMA F8650X (via F8627X Module)
To enable Ethernet connectivity, you must pair the HIMA F8650X with the HIMA F8627X communication module (available separately). This integration allows the HIMA F8650X to connect to two key types of devices/networks:
The communication path works as follows: HIMA F8650X CPU → backplane bus → F8627X module → Ethernet network (and vice versa). For detailed compatibility between the F8650X and F8627X, you can refer to the H51q System Datasheet (note: the webpage currently fails to parse, please try again later).
Diagnostic Interface of HIMA F8650X
The HIMA F8650X features a user-friendly diagnostic interface that simplifies commissioning, troubleshooting, and maintenance. Its key components include:
4‑digit alphanumeric matrix display: Shows status codes, fault messages, and system information
2 status LEDs: CPU (indicates module errors) / IO (indicates field I/O module errors)
2 toggle switches: Allow users to request detailed error information for faster troubleshooting
ACK pushbutton: Resets alarm indications; in fault stop mode, it initiates a system restart
For a complete list of error codes and diagnostic procedures, you can refer to HIMA’s documentation Functions of the operational system BS 41q/51q (note: the webpage currently fails to parse, please try again later).
Safety & Watchdog Function of HIMA F8650X
A core safety feature of the HIMA F8650X is its safety-related watchdog circuit, which ensures fail-safe behavior if internal module faults occur. The watchdog output specs are 24 VDC, up to 500 mA, and it is short-circuit proof. When it detects a fault (e.g., processor failure, memory corruption), the watchdog triggers a safe shutdown to prevent hazardous conditions—this is a critical requirement for SIL 3 applications.
Power & Electrical Data of HIMA F8650X
Internal operating voltage:5 V / 2 A (powered from the H51q system backplane)
External system supply: 24 VDC (standard for industrial safety systems)
Watchdog output: 24 V / 500 mA (short-circuit proof, for safe shutdown signals)
Mechanical Specifications of HIMA F8650X
The HIMA F8650X is designed for easy integration into standard industrial control cabinets. Its key mechanical features are as follows:
Construction: 2 Euro‑standard PCBs + 1 dedicated PCB for the diagnostic display
Width: 8 SU (signal units) – fits standard HIMA rack mounting systems
Robust design: It withstands industrial vibration and temperature fluctuations and is compatible with HIMA’s rack enclosures.
Battery & Maintenance for HIMA F8650X
Proper maintenance of the HIMA F8650X ensures long-term reliability, especially for the buffer battery. Here are the key maintenance details:
Buffer battery: It uses a lithium CR 2477N battery (HIMA part no. 44 0000018), which you can obtain via HIMA’s official spare parts portal (note: the webpage currently fails to parse, please try again later).
Backup life: 1000 days at 25 °C; 200 days at 60 °C
Replacement recommendation: Max 6 years, or within 3 months if the “BATI” error code is displayed (indicates low battery)
Critical note: If you upgrade from the older F8650 module to the HIMA F8650X, you must modify the fan concept of the H51q system (refer to HIMA’s upgrade guide for details).
Typical Applications of HIMA F8650X
The HIMA F8650X is widely used in industries that require SIL 3 safety integrity. Some common applications include:
Emergency Shutdown (ESD) systems in oil, gas, and chemical plants
Process Safety Systems (SIS) for critical process control
Burner Management Systems (BMS) in power plants and manufacturing
Fire & Gas detection systems for industrial facilities
Machinery and plant safety systems (e.g., conveyor, press, and robotics safety)
Basic Information
Series: HIMA H51q Safety System
Part Number: F8650X
Module Type: Safety-Related Central CPU Module
Category: Safety Controller & CPU
RMB Price: 12600.00
Gross Weight: 0.90 kg
Packaging List
FAQ
Q1: What safety level does the HIMA F8650X support? A1: It is approved for use up to SIL 3 (IEC 61508), making it suitable for the most critical safety applications.
Q2: Which system platform is the HIMA F8650X designed for? A2: It is exclusively used in the HIMA H51q‑MS, HS, HRS safety system series.
Q3: Does the HIMA F8650X support Ethernet communication? A3: Yes, via the HIMA F8627X communication module, which enables SafeEthernet and Modbus TCP connectivity.
Q4: How long does the buffer battery of the HIMA F8650X last? A4: Up to 1000 days at 25 °C; replacement is recommended every 6 years or within 3 months if “BATI” is displayed.
Q5: How is this module shipped? A5: Worldwide delivery via Fedex, UPS and DHL with professional anti-static protection to ensure product integrity.
Attention: The above product information is sourced from the internet and cannot be guaranteed to be authentic.
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