Description
Key Technical Specifications
| Parameter | Value |
|---|---|
| Manufacturer | HIMA Paul Hildebrandt GmbH |
| Model / Part Number | F8650X / 984865065 |
| System Compatibility | HIMA H41q, H51q Safety Systems |
| Safety Integrity Level | SIL 3 (IEC 61508), PL e / Cat 4 (EN ISO 13849-1) |
| Processor Structure | Dual Microprocessors with 1oo2D diagnostic structure |
| Programming Environment | HIMA ELOP II Software Suite |
| Memory Configuration | Integrated Flash EPROM for safety logic, battery-backed SRAM |
| Front Interfaces | 2 × RS-485 / Serial ports (Diagnostics & ELOP II programming) |
| Operating Voltage | 5 VDC (internally supplied via backplane) / 24 VDC external monitoring |
| Form Factor | Standard 19-inch Eurocard format (8 HP width) |
| Operating Temperature | 0 °C to +60 °C (32 °F to 140 °F) |
Product Introduction & Supply Chain Strategy
The HIMA F8650X (Part Number: 984865065) is the flagship central processor module for the HIMA H41q and H51q safety-instrumented system (SIS) platforms. Featuring a fail-safe, 1oo2D dual-microprocessor architecture with built-in hardware diagnostics, the F8650X executes certified safety logic for Emergency Shutdown (ESD), Fire & Gas (F&G), and Burner Management Systems (BMS) with high execution speed and diagnostic coverage.
Maintaining a factory-sealed New Surplus F8650X CPU on-site is a critical requirement for continuous process plants operating legacy H41q or H51q racks. Central processors are vulnerable to thermal stress over years of continuous 24/7 operation; utilizing refurbished CPU cards risks hidden memory degradation or worn backplane contacts that can trigger sudden watchdog trips or lock out safety communication buses. Sourcing a New Surplus F8650X ensures pristine silicon performance, full battery-backed SRAM health, and certified SIL 3 system continuity.

F8650X

F8650X
Installation & Configuration Guide
1
Stage 1: Logic Archive & Safety Isolation
Prerequisite & Safety
1.Stage 1: Logic Archive & Safety Isolation:Prerequisite & Safety.
Perform a full online backup export of the active safety program using the ELOP II engineering station. Follow site MOC procedures to place affected safety instrumented functions (SIF) into temporary bypass. Wear an ESD wrist strap connected to earth ground before handling the card.
2
Stage 2: Removing the Existing Central CPU
Card Extraction
2.Stage 2: Removing the Existing Central CPU:Card Extraction.
Power down the target controller rack. Disconnect programming and diagnostic serial cables from the front panel. Unscrew the upper and lower retaining screws, then unlatch the dual ejector handles to unseat the high-density backplane connector. Slide the out along its subrack guide rails.
3
Stage 3: Installing the New
Physical Mounting
3.Stage 3: Installing the New :Physical Mounting.
Carefully align the New Surplus (984865065) card with the subrack guide slots. Push the card in firmly until the multi-pin connector seats completely into the backplane assembly. Tighten the retaining screws and re-attach front-panel diagnostic cables.
4
Stage 4: Program Transfer & Synchronization
Commissioning & Diagnostics
4.Stage 4: Program Transfer & Synchronization:Commissioning & Diagnostics.
Reapply power to the subrack. Connect the ELOP II engineering workstation via the front serial interface. Download the compiled safety logic program, verify that the active application checksum (CRC) matches the engineering baseline, and confirm CPU synchronization (RUN solid green, ERR off).
Engineering & Hardware Notes
- Software Environment: Exclusively compiled, downloaded, and diagnosed using the HIMA ELOP II engineering suite.
- Redundant Configurations: In dual-redundant (1oo2D / 2oo4) H41q/H51q setups, ensure both primary and secondary modules run matching firmware revisions and OS builds for seamless auto-synchronization.
- Backplane Pin Alignment: Inspect subrack backplane pins prior to seating the module; bent or tarnished pins can disrupt CPU bus arbitration.
Frequently Asked Questions (FAQ)
What is the difference between the HIMA and the F8652X central modules?
While both are central processors for H41q/H51q platforms, the is the standard high-capacity CPU, whereas the F8652X features expanded memory capacity and higher clock speeds tailored for larger cause-and-effect matrix application logic.
Can the 984865065 be programmed using SILWorX?
No. The belongs to the legacy H41q/H51q architecture and is configured exclusively within the ELOP II software environment.
Is the main CPU hot-swappable during active plant operation?
In dual-redundant CPU rack configurations (e.g., H41q-HRS or H51q-HRS), an module can be replaced while the partner CPU runs the safety program. However, strict adherence to site safety bypass procedures is required before pulling any central module.
What warranty coverage applies to this New Surplus module?
All New Surplus HIMA modules undergo thorough physical pin inspection, voltage tolerance checks, and ESD protective handling, backed by a full 1-year replacement warranty.

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