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Phone: +86 16626708626Description
Key Technical Specifications
| Parameter | Value |
| Manufacturer | HIMA Paul Hildebrandt GmbH |
| Model Number | F8628 |
| Part Number Cross-Reference | 984862802 / 984862865 (X-variant) |
| System Family | HIQuad / H41q and H51q Safety Controllers |
| Primary Protocols | Profibus DP Slave / Modbus TCP Slave |
| Configuration Interface | Ethernet Interface for ELOP II Programming Environment (V4.1 or higher) |
| Hardware Form Factor | 19-inch Subrack Card, 3 HU (Height Units), 4 WU (Width Units) |
| Physical Connections | Front-panel RJ-45 Ethernet port and sub-D network interfaces |
| Target CPU Matches | F8650X / F8652X (Safe CPUs), F8651X / F8653X (Non-Safe CPUs) |
| Operating Voltage | 5 V DC logic rail derived directly via backplane assembly |
| Operating Temperature | 0 to +60°C (32 to 140°F) |
| Net Weight | 0.57 lbs (0.26 kg) |
Product Introduction
The HIMA F8628 is a dual-protocol industrial communication module developed for the HIQuad H41q and H51q safety-related programmable electronic controllers. Operating as a dedicated communication gateway, this VME-style card slides directly into the main processor subrack to establish high-throughput network bridges and programming uplinks without placing additional computing overhead on the safety-critical central processing units.
This card is engineered to handle industrial connectivity through two key channels: a high-speed Ethernet interface dedicated to system programming using the ELOP II engineering environment, and an onboard Profibus DP Slave network engine. This design allows plant architectures to pass safety logs and system tags to non-safety Distributed Control Systems (DCS) or SCADA host computers while preserving total structural safety isolation for the underlying logic loops.
- F8628
- F8628
Troubleshooting Quick Reference
| Symptom | Possible Cause | Relevance to this Part | Quick Check Method | Recommendation |
| No Ethernet link LED on RJ-45 connection | Bad physical network patch cable or deactivated switch port | ❌ Low | Test the copper patch line with a dedicated network cable tester; check if the green status light on the local network switch is active. | Swap compromised patch lines or switch routing locations before assuming a module hardware failure. |
| ELOP II software fails to connect via network link | IP address parameter mismatch or firmware version roadblock | ✅ High | Check system settings to verify that the target controller MAC address matches your network parameters. Ensure ELOP II version is V4.1 or later. | Reconfigure local computer network parameters. If communication remains locked after a hardware drop-in, wipe and reload the communication parameters. |
| Profibus Master reports “Bus Fault” or “Slave Missing” | Incorrect physical DIP switch configuration or node collision | ✅ High | Check the hardware DIP switch blocks on the side of the F8628 card using a flashlight. Confirm node allocation doesn’t duplicate a companion card. | Take a clear reference photo of the old module. Mirror the target address switches exactly on the replacement card before inserting. |
| System diagnostics log reports “Backplane Comm Error” | Compromised backplane pins or logic rail voltage drops below 4.75 V | ✅ High | Measure logic power distribution directly at the central rack test terminals using a Fluke 115 multimeter. | If the 5 V DC bus is stable but backplane errors stay active on a single slot location, check the gold card fingers for physical damage. |
Note: For complex configuration lockups or deep protocol evaluation, pull your ELOP II communication capture trace logs and submit them directly to our application engineering division.
Frequently Asked Questions (FAQ)
Does the HIMA F8628 require an independent safety validation certificate for runtime modifications?
No, because the F8628 operates strictly as a communication processor and network interface. It is decoupled from the safety execution layer handled by primary units like the F8650X. This split structure allows you to perform network diagnostics, modify parameters within the Profibus map, and establish programming links via ELOP II without interrupting or compromising the active safety certifications of your system.
What is the functional difference between the legacy F8628 and the newer F8628X variant?
The basic F8628 and the F8628X share matching underlying protocol maps and can be interchanged in the vast majority of legacy HIQuad systems. The “X” variant includes structural optimizations to better match the high-speed synchronization demands of newer redundant CPU setups (F8650X/F8652X). Both options process ELOP II programming frames over standard Ethernet identically.
Can I hot-swap the F8628 communication card while the safety rack is online?
No, hot-swapping this card is highly dangerous. The backplane bus layout utilized across the legacy H41q and H51q lines does not utilize staggered pin lengths to ground signals first. Pulling this card while energized can cause bus line errors that trip the main safety processor into an emergency shutdown state, bringing down your entire process loop. Always drop rack power completely before replacement.
How do I transfer network node allocations from a dead card to a replacement module?
The F8628 relies on physical DIP switch arrays and onboard jumper pins to lock in its hardware address configurations and termination profiles. It is a common mistake to slide a replacement module straight from the box into the rack without looking at the side plates. Always match the position of every micro-switch on the old card to the new unit before installation.
What testing procedures do your New Surplus HIMA cards undergo prior to shipping?
Our engineering inventory team passes every F8628 unit through a strict quality protocol. The card undergoes an inspection for micro-fractures, followed by a power-on test within a standard HIQuad control rack. We establish an Ethernet handshake to confirm active programming loopback via ELOP II and test the Profibus port to ensure reliable communication. The unit is then packed in ESD static-shield packaging and ships with a full 1-year replacement warranty.
