Industrial PROFIBUS Fiberoptic Solution – Hirschmann OZDPROFI12MG12 | OZD PROFI Series
Where This Product Is Used
The Hirschmann OZDPROFI12MG12 is an OZD PROFI series fiberoptic PROFIBUS repeater/coupler designed for mission-critical industrial environments where electrical isolation, long-distance communication, and EMI immunity are non-negotiable. Typical deployment scenarios include:
- Automotive manufacturing plants – connecting PROFIBUS DP segments across paint shops and welding cells with high electromagnetic interference
- Chemical & petrochemical facilities – intrinsically safe zone separation via optical isolation between control rooms and field devices
- Power generation & utilities – linking PLCs, drives, and I/O stations across substations where ground potential differences exist
- Water treatment & SCADA systems – extending PROFIBUS networks over distances exceeding copper cable limits (up to 3 km per segment on multimode fiber)
- Steel mills & heavy industry – noise-immune data transmission in high-voltage environments
- Pharmaceutical & food processing – clean-room compatible fiber runs with no electrical interference to sensitive instrumentation
Technical Specifications
| Part Number / SKU | OZDPROFI12MG12 |
| Brand | Hirschmann (Belden) |
| Series | OZD PROFI |
| Function | Fiberoptic PROFIBUS Repeater / Optical Bus Coupler |
| PROFIBUS Standard | IEC 61158 / EN 50170 (PROFIBUS DP/FMS) |
| Max. Baud Rate | 12 Mbps (auto-detection) |
| Fiber Type | Multimode Glass Fiber (MG) |
| Optical Ports | 2 × ST/BFOC fiber ports |
| RS-485 Ports | 1 × D-Sub 9-pin (PROFIBUS DP) |
| Max. Fiber Segment Length | Up to 3,000 m (multimode, 62.5/125 µm) |
| Supply Voltage | 24 V DC (18–32 V DC) |
| Power Consumption | Approx. 3 W |
| Operating Temperature | -20 °C to +60 °C |
| Protection Class | IP20 |
| Mounting | DIN rail (35 mm) |
| Weight | 4,460 g (packaged) |
| Certifications | CE, UL, cUL |
Why Engineers Specify This Model
- Full galvanic isolation – eliminates ground loops and protects sensitive PROFIBUS devices from voltage transients
- Auto baud rate detection – supports all PROFIBUS baud rates from 9.6 kbps to 12 Mbps without manual configuration
- Redundancy-ready topology – supports ring and linear fiber topologies for high-availability networks
- Plug-and-play integration – transparent to the PROFIBUS master; no GSD file or software configuration required
- Proven Hirschmann/Belden reliability – MTBF >100,000 hours; trusted in IEC 61511 SIL-rated process loops
- DIN rail form factor – fits standard control cabinet infrastructure without additional mounting hardware
Complete System Bill of Materials
For a complete PROFIBUS fiberoptic segment, engineers typically pair the OZDPROFI12MG12 with:
- Multimode fiber patch cable (62.5/125 µm or 50/125 µm) with ST/BFOC connectors
- PROFIBUS DP master (e.g., Siemens CP 342-5, S7-300/400 IM)
- PROFIBUS DP slaves (drives, I/O modules, valve positioners)
- 24 V DC DIN rail power supply (e.g., Phoenix Contact QUINT series)
- PROFIBUS termination resistors (active bus terminal at segment ends)
- DIN rail, cable duct, and grounding accessories
Compliance & Industry Standards
- PROFIBUS standard: IEC 61158, EN 50170
- EMC: EN 61000-4 series (ESD, EFT, surge, conducted immunity)
- Safety: CE marking, UL 508 (Industrial Control Equipment), cUL
- Environmental: RoHS compliant
- Network management: Compatible with PROFIBUS PA and DP segment couplers
Quality Assurance & Sourcing
All units offered by Konmask.com are sourced from authorized distributors or verified surplus channels. Each OZDPROFI12MG12 undergoes:
- Visual inspection and label verification against Hirschmann factory markings
- Functional power-on test prior to shipment
- Anti-static packaging with humidity indicator card
- Traceable lot documentation available on request
We specialize in industrial automation components for MRO, system integrators, and OEM procurement teams requiring fast delivery of hard-to-find or long-lead-time parts.
How to Source This Part
Submit your RFQ directly via our website or contact our technical sales team. We support:
- Single-unit and bulk orders
- Urgent same-day quotation for critical plant shutdowns
- Export documentation (CO, packing list, commercial invoice) for international shipments
- DDP/DAP Incoterms for seamless cross-border delivery
Application-Specific FAQ
Q: Can the OZDPROFI12MG12 be used in a PROFIBUS PA network?
A: No. This module is designed for PROFIBUS DP/FMS (RS-485 electrical interface). For PROFIBUS PA, a dedicated DP/PA segment coupler is required.
Q: What is the maximum number of nodes per fiber segment?
A: The OZD PROFI acts as a repeater; each RS-485 segment supports up to 31 nodes. Multiple OZD units can be cascaded to extend the network.
Q: Is the OZDPROFI12MG12 compatible with PROFINET?
A: No. This device is exclusively for PROFIBUS (IEC 61158). For PROFINET over fiber, a managed Industrial Ethernet switch with SFP ports is required.
Q: Does it support redundant fiber ring topology?
A: Yes. The dual fiber ports allow linear or ring configurations. Ring topology provides automatic fault recovery for high-availability applications.
Q: What fiber cable specification is required?
A: Multimode glass fiber, 62.5/125 µm or 50/125 µm, with ST/BFOC connectors. Maximum attenuation: 3.5 dB/km at 850 nm.
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