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- HIMA
- F8621A
- Communication Module
- Germany
- 120 mm × 80 mm × 30 mm
- 0.2kg
- Xiamen, China
- New & In Stock
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Product Overview – HIMA F8621A
The HIMA F8621A is a communication / coprocessor module in the HIMA safety control ecosystem (HIQuad / H51q series). It is designed to interface safety CPU / control units with external networks and devices via RS‑485 interfaces, providing galvanic isolation, configurable baud rates, dual‑port RAM for fast memory access, and safety certification (SIL 3). Its role is offloading or supporting communication tasks so that the main processor can focus on safety logic, while F8621A handles external data/serial links with reliability.
It is built for use in safety instrumented systems, emergency shutdown, fire & gas detection, and similar high‑risk industrial applications, particularly when you need robust communication with fault tolerance and safe isolation.
Technical Specifications – F8621A
| Parameter | Specification / Typical Value |
|---|---|
| Model | F8621A |
| Module Type | Coprocessor / Communication Module for safety systems |
| Safety Certification | SIL 3 (IEC 61508) |
| Processor | HD 64180 microprocessor, ~10 MHz clock speed |
| Static Memory (RAM/EPROM) | 384 kB (CMOS‑RAM + EPROM) |
| Interfaces | 2 × RS‑485 (half‑duplex) with galvanic isolation |
| Transmission Rates | Configurable via DIP switches: 300, 600, 1200, 2400, 4800, 9600, 19200, 38400, 57600 bps |
| Dual‑Port RAM | Yes, for fast memory sharing / access by main controller |
| Power Supply / Voltage | 5 V DC; current approx 360 mA in many versions (≈1.8 W) |
| Operating Temperature | ≈ −20 °C to +60 °C |
| Storage Temperature | ≈ −40 °C to +85 °C |
| Dimensions (W × H × D) | 120 mm × 80 mm × 30 mm (in many listings) |
| Weight | ≈ 0.20 kg (or approx 200 g) |
| Mounting / Space Requirement | Requires module slots (e.g. 4 TE) in safety rack chassis |
| Diagnostics / Safety Features | Galvanic isolation, fault detection (open/short), robust communication, dual‑channel paths |
Applications
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Connecting safety CPU/control units to external serial networks / SCADA via RS‑485 for monitoring, alarms, data exchange.
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Field communication in Emergency Shutdown (ESD) systems or Fire & Gas (F&G) systems.
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Bridging between internal safety logic modules and external devices needing serial communication (e.g. sensors, actuators).
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Chemical, petrochemical, oil & gas, power generation facilities with safety critical data transmission requirements.
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Environments with electromagnetic noise or harsh ambient conditions, where galvanic isolation helps maintain data integrity.
Advantages
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Certified SIL 3 ensures high reliability in safety‑critical operations.
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Dual RS‑485 isolated ports: allows redundancy or linking to two different external devices/networks.
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Dual‑port RAM: improves speed in sharing data with central safety CPU, reducing latency.
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Robust environmental specs: moderate temperature range, industrial grade construction.
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Compact size and low weight reduce rack space and simplify installation.
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DIP‑switch configurable baud rates enable flexible communication with legacy and modern devices.
Brand & Series Information
| Field | Description |
|---|---|
| Brand | HIMA |
| Series / Family | F‑series / HIQuad / H51q series |
| Module Role | Coprocessor / Communication Module |
| System Integration | Works with HIMA’s safety CPU / SIS racks |
| Safety Level | SIL 3 |
| Installation Type | Mounted in industrial safety racks / control cabinets |
Related / Similar Models – Same Series or Related Function
Here are five models in the same or similar HIMA series or with related communication / processing roles:
| Model | Function / Purpose | Dimensions (approx) | Weight (kg) | Key Notes |
|---|---|---|---|---|
| F8627X | Communication / interface module (Ethernet / fieldbus) | ~120 × 100 × 80 mm | ~0.5 kg | More network protocols, larger I/O mix |
| F8650X | Safety CPU / central processing unit | somewhat larger footprint | ~0.5‑0.6 kg | Higher compute capacity for safety logic |
| F8650E | Previous central / CPU module | larger, more power draw | ~0.5 kg | Often used where less communication overhead needed |
| F8203 | I/O extension (digital / analog) | medium size | ~0.25‑0.5 kg | Expand inputs/outputs around safety system |
| F7546 | Communication or interface redundancy module | compact | ~0.3 kg | Adds backup links or network interfaces |
Popular Models from Same Brand
Here are five HIMA modules commonly used, which may serve as alternatives or complements to F8621A:
| Model | Function / Use Case | Dimensions (approx) | Weight (kg) | Highlights |
|---|---|---|---|---|
| F8650E | Main CPU / safety central processor | larger footprint | ~0.5 kg | High logic capacity, used for core safety logic |
| F8650X | Upgraded CPU module with more I/O / communication | similar or slightly larger | ~0.5‑0.6 kg | Flexibility with protocols & performance |
| F8627X | Communication / network interface module | ~0.5 kg | ~0.5 kg | Supports diverse networks |
| F8203 | I/O expansion module | medium size | ~0.25‑0.5 kg | Adds inputs/outputs |
| F7546 | Backup / interface redundancy module | compact size | ~0.3 kg | Improves system reliability |
FAQ (10 Q&A)
Q1: What voltage does the F8621A module use?
A1: It operates on 5 V DC in most versions, as a communication coprocessor module.
Q2: What safety standard is F8621A certified to?
A2: It is certified to SIL 3 under functional safety standards (IEC 61508).
Q3: What are its dimensions and weight?
A3: Typical dimensions are 120 mm × 80 mm × 30 mm, and weight is about 0.20 kg.
Q4: What communication interfaces does it have?
A4: It has 2 RS‑485 half‑duplex interfaces with galvanic isolation. Baud rates configurable via DIP switches.
Q5: Does it have its own processor and memory?
A5: Yes, it uses the HD 64180 microprocessor (10 MHz), with about 384 KB static memory (CMOS‑RAM + EPROM) and dual‑port RAM.
Q6: Is this module hot‑swappable?
A6: It typically resides in a safety rack; whether hot‑swap is supported depends on the overall system architecture; in many safety systems some communication modules are replaceable under certain conditions.
Q7: What is its typical operating temperature range?
A7: Approximately −20 °C to +60 °C; storage up to −40 °C to +85 °C in many listings.
Q8: What diagnostics does it provide?
A8: It offers galvanic isolation, open/short detection, monitoring of communication health, LED indicators, and fault signalling.
Q9: In what industries is F8621A commonly used?
A9: Oil & gas, chemical plants, power generation, process safety, and any environment needing reliable safety communication.
Q10: What is the benefit of using this coprocessor module instead of just using the main CPU?
A10: It offloads communication tasks, reducing load on the main CPU; improves reliability and response by having dedicated interfaces and RAM for communication; improves fault isolation; can improve system determinism and safety.
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