Product Introduction
When safety-critical control demands reliable central processing, the HIMA F8650X central module delivers robust performance for PES H51q systems. As a direct upgrade from the earlier F8650, this module integrates dual Intel 386EX microprocessors with 32-bit architecture, offering enhanced processing capability for safety applications up to SIL 3 per IEC 61508. The HIMA F8650X features two isolated RS 485 serial interfaces, a four-digit matrix diagnostic display, and a safety-related watchdog with overload protection. Its construction includes two European standard PCBs, ensuring durability in industrial environments.
Installation & Upgrade Guidance
When upgrading from an F8650 to the HIMA F8650X, you must also change the fan concept to maintain proper thermal management. The module occupies 8 SU of rack space and requires 5 V / 2 A power. During installation, verify the bus station number and transmission rate settings on switch S1. For communication with external networks, pair the HIMA F8650X with the F 8627X communication module via the backplane bus to enable Ethernet connections (safeethernet, Modbus TCP).
Maintenance & Reliability
The HIMA F8650X includes a buffer battery with a lifetime of 1000 days at 25 °C or 200 days at 60 °C without voltage feeding. Replace the battery (lithium type CR 2477N, HIMA part no. 44 0000018) at least every six years or within three months if the BATI display appears. The safety-related watchdog output (24 V, max 500 mA, short-circuit proof) provides fail-safe shutdown. Routine checks on the diagnostic display and toggle switches help identify errors early. The push-button ACK resets error indications and behaves like a system restart during failure stop.
Compatibility & Integration
The HIMA F8650X central module is designed for use in PES H51q-MS, -HS, and -HRS systems. It communicates via the backplane bus with the F 8627X communication module, which provides Ethernet connectivity for PADT (ELOP II TCP) and other network partners. The central module supports self-education and ELOP II TCP from operating system BS41q/51q V7.0-8 (05.31). For detailed integration steps, refer to the F8627X data sheet and the H41q/H51q safety manual.
Selection Guide & Purchasing Advice
Before purchasing a HIMA F8650X central module, confirm your system version and ensure the fan concept supports the upgrade if replacing an F8650. Verify bus station number and transmission rate settings on switch S1. For reliable sourcing, choose an established supplier like PLC Source PRO (available at ubest101.myshopify.com) to guarantee genuine parts and technical support. Contact our team for additional specifications and compatibility checks.