PHOENIX DIGITAL OCX-CTN-85-R-D-ST-24V Fiber Optic Module | Replacement, Equivalent & Selection Guide
The PHOENIX DIGITAL OCX-CTN-85-R-D-ST-24V is an industrial-grade fiber optic converter module designed for reliable data transmission in demanding automation environments. Operating at 24V DC with ST-type fiber connectors, this module is widely deployed in PLC-based control systems, DCS architectures, and process automation networks. This page provides full technical specifications, verified replacement options, and a structured selection guide to help engineers and procurement teams make confident sourcing decisions.
Technical Specifications
- Part Number: OCX-CTN-85-R-D-ST-24V
- Manufacturer: PHOENIX DIGITAL
- Module Type: Fiber Optic Converter / Transceiver Module
- Supply Voltage: 24V DC
- Connector Type: ST (Straight Tip) Fiber Optic
- Wavelength: 850 nm (multimode)
- Transmission Mode: Duplex (R-D)
- Fiber Type: Multimode (62.5/125 µm or 50/125 µm)
- Operating Temperature: -20°C to +70°C (industrial range)
- Housing: DIN-rail mountable, compact form factor
- Weight: 1,850 g (packaged)
- Compliance: CE, RoHS
Compatible Replacement & Equivalent Models
The following models are verified functional equivalents or drop-in replacements for the OCX-CTN-85-R-D-ST-24V. Always confirm pinout, voltage, and fiber spec before substitution.
- PHOENIX DIGITAL OCX-CTN-85-R-D-SC-24V — Same spec, SC connector variant
- PHOENIX DIGITAL OCX-CTN-85-R-D-ST-12V — 12V DC version, same optical spec
- Moxa IMC-101-M-ST — Industrial media converter, ST multimode, 24V compatible
- Advantech EKI-2541SI — Fiber-to-Ethernet converter, multimode ST, DIN-rail
- Hirschmann OZD Profi 12M G12 — PROFIBUS fiber repeater, multimode, industrial grade
- Siemens 6GK1502-3CB10 — OLM/G12 optical link module, multimode, ST connector
Note: Cross-reference compatibility is based on published datasheets. Konmask.com recommends engineering validation before production substitution.
Why Choose the Original Model
- Proven field reliability — Deployed in thousands of industrial installations globally
- PHOENIX DIGITAL quality standard — Manufactured to IEC 61158 and EN 50170 automation network standards
- Exact OEM fit — No firmware or wiring modification required for system integration
- Long-term availability — Konmask.com maintains stock of legacy and current-generation PHOENIX DIGITAL modules
- Warranty-backed sourcing — All units shipped with traceable documentation and quality inspection records
Typical Applications
- PROFIBUS DP / PA fiber optic segment extension
- PLC remote I/O communication over multimode fiber
- DCS field bus isolation and noise immunity improvement
- Long-distance serial data transmission in factory automation
- Hazardous area communication (galvanic isolation via fiber)
- Power plant, water treatment, and oil & gas SCADA networks
System Compatibility
- Siemens SIMATIC S7 — S7-300, S7-400, S7-1500 via PROFIBUS fiber segment
- Rockwell Allen-Bradley — ControlLogix / CompactLogix with fiber DP adapters
- ABB AC500 / AC800M — Fiber fieldbus extension modules
- Schneider Electric Modicon — M340, M580 PROFIBUS fiber configurations
- Honeywell Experion PKS — DCS fiber communication backbone
- Yokogawa CENTUM VP — Field network fiber segment
Selection Guide
Use the following criteria to select the correct OCX-CTN series module for your application:
- Voltage: 24V DC (standard) → OCX-CTN-85-R-D-ST-24V | 12V DC → OCX-CTN-85-R-D-ST-12V
- Connector: ST (bayonet) → ST variant | SC (push-pull) → SC variant | LC → confirm with Konmask
- Wavelength: 850 nm multimode (up to ~2 km) → 85 | 1300 nm singlemode (up to 15 km) → 13
- Transmission: Full duplex → R-D | Half duplex → R-H
- Quantity: Single unit or bulk order — contact Konmask.com for volume pricing
Quality Assurance & Sourcing
- All PHOENIX DIGITAL modules sourced through authorized distribution channels or verified surplus with full traceability
- Each unit undergoes incoming inspection: visual check, label verification, and functional power-on test
- Anti-static packaging with humidity indicator cards for long-distance shipping
- Certificate of Conformance (CoC) and test reports available upon request
- Export documentation (commercial invoice, packing list, HS code 8517.62) provided for international orders
How to Order
- Online: Add to cart directly on this page — in-stock units ship within 1–3 business days
- Email RFQ: [email protected] — include quantity, required delivery date, and destination country
- Phone / WhatsApp: +0086 19859288691 (Mon–Fri, 09:00–18:00 CST)
- Bulk / OEM orders: Volume discounts available for 5+ units — request a formal quotation
Replacement & Compatibility FAQ
Q: Can I use the OCX-CTN-85-R-D-SC-24V as a direct replacement?
A: Yes, if your system uses SC connectors. The optical and electrical specifications are identical; only the fiber connector type differs.
Q: Is this module compatible with PROFIBUS DP at 12 Mbps?
A: Yes. The OCX-CTN-85-R-D-ST-24V supports PROFIBUS DP baud rates up to 12 Mbps over multimode fiber.
Q: What is the maximum fiber distance supported?
A: Up to approximately 2 km on 62.5/125 µm multimode fiber at 850 nm wavelength.
Q: Do you provide a warranty?
A: Yes. Konmask.com provides a 12-month warranty on all PHOENIX DIGITAL modules against manufacturing defects.
Q: Can I return the module if it is not compatible?
A: Yes, within 30 days of receipt, subject to our returns policy. Contact [email protected] to initiate a return.
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Original Source: https://Konmask.com
Contact: [email protected] | +0086 19859288691
