Description
Product Overview
The HIMA F8650X central module is a safety-rated CPU designed for PES H51q-MS, -HS, and -HRS systems, compliant with SIL 3 per IEC 61508. It features dual clock-synchronized microprocessors, each with independent memory—one handling real data, the other inverted—for fault detection and redundancy.
A hardware comparer monitors external access discrepancies. In case of failure, the watchdog triggers a safe state and reports processor status. The module includes Flash-EPROMs rated for over 100,000 write cycles, battery-backed sRAM, and diagnostic LEDs for system and I/O feedback.
Technical Specifications
| Attribute |
Value |
| Manufacturer |
HIMA |
| Part Number |
F8650X |
| System Compatibility |
PES H51q-MS / -HS / -HRS |
| Safety Certification |
SIL 3 (IEC 61508) |
| Microprocessors |
2 × clock-synchronized CPUs |
| Memory Architecture |
Real + inverted data/program separation |
| Program Memory |
Flash-EPROM (≥100,000 write cycles) |
| Data Memory |
Battery-backed sRAM |
| Interfaces |
2 × RS485 (galvanic isolation) |
| Transmission Rates |
9600 / 57600 bps (switch/software) |
| Diagnostic Display |
2 × LEDs for system and I/O feedback |
| Dual Port RAM |
For second CPU (not used in H51q-MS) |
| Clock |
Battery-backed hardware clock |
| Watchdog |
Fail-safe, testable |
| Power Monitoring |
5 V system voltage |
| Battery Monitoring |
Integrated |
| Dimensions |
20.3 cm × 12.7 cm × 2.5 cm |
| Weight |
0.2 kg |
| Operating Voltage |
5 VDC |
| Current Consumption |
2 A |
