140NOM25200 DIO Head-End Adapter – Modicon Quantum
140NOM25200 by Schneider Electric is a DIO head-end adapter for the Modicon Quantum platform. It offers dual ports: Modbus Plus fiber and Modbus RS-232. The adapter operates at 1 Mbps and supports 30 input words and 32 output words. It provides reliable communication with low jitter and fast rise/fall times for industrial environments.
Technical Specifications
| Brand | Schneider Electric |
| Model | 140NOM25200 |
| Series | Modicon Quantum |
| Type | DIO Head-End Adapter |
| Interfaces | 1 Modbus Plus Fiber, 1 RS-232 |
| Transmission Rate | 1 Mbit/s |
| I/O Words | 30 Input / 32 Output |
| Power Dissipation | 4 W |
| Bus Current | 750 mA |
| Pulse Distortion/Jitter | 5 ns (min) |
| Rise/Fall Time | 20 ns |
| Dynamic Range | 20 dB |
| Wavelength | 820 nm |
| Optical Tx Power | -16 to -9 dBm (100/140 µm) |
| Power Loss Budget | 11 dB (62.5/125), 16.5 dB (100/140), 6.5 dB (50/125) |
| Sensitivity | > 30 dBm |
| Detected Silence | -36 dBm |
| Operating Temp | 0 °C to 60 °C (32 °F to 140 °F) |
| Storage Temp | -40 °C to 85 °C (-40 °F to 185 °F) |
| Humidity | 95 % (non-condensing) |
| Altitude | ≤ 5000 m (16404 ft) |
| Standards & Certifications | UL 508, CSA Class 1 Div 2, DNV, GL, RINA, RMRS, GOST, C-tick |
Installation & Commissioning
Mount the adapter on a DIN rail or panel. Connect fiber and RS-232 cables to the labeled ports. Supply 750 mA bus current to the unit. Use shielded twisted-pair wires for RS-232 to reduce noise. The adapter auto-negotiates the baud rate. No external programming is needed for basic setup. Check the LED indicators to verify link status.
Diagnostics & Maintenance
Built-in diagnostics monitor fiber signal quality and RS-232 activity. The adapter reports communication errors and loss of signal. It detects silent lines below -36 dBm. Use the RAM checksum to verify data integrity. The processor continuously checks the address space. This helps isolate faults quickly during maintenance.
Environmental Immunity
- ESD: 4 kV contact, 8 kV air (IEC 801-2)
- RF Immunity: 9.1 V/m (10 V/m) from 80 to 2000 MHz
- Temp Range: 0 °C to 60 °C, up to 95% humidity
- Altitude: Up to 5000 m without derating
Compatibility & System Integration
This adapter works with all Modicon Quantum CPUs and remote drops. It supports fiber types: 50/125 µm, 62.5/125 µm, and 100/140 µm. The RS-232 port connects to HMIs, SCADA, or programming tools. It is fully compatible with Modbus RTU and Modbus Plus. Use it in new or existing Quantum systems without firmware changes.
Typical Applications
- Remote I/O for large distributed control systems
- Bridge between fiber backbone and serial devices
- Upgrading legacy RS-232 to fiber-optic links
- Oil & gas, water treatment, power generation
- Marine and offshore automation (DNV/GL certified)
Ordering, Packaging & Shipping
Package includes: 1 unit 140NOM25200, mounting hardware, quick-start guide. Weight: 494 g (17.4 oz). Dimensions: 5 x 16.5 x 31 cm. Warranty: 12 months against defects. Shipping: FedEx, UPS, DHL – worldwide delivery.
Frequently Asked Questions
Q: Can I hot-swap this adapter? No, power off the rack before removal.
Q: Maximum fiber distance? Up to 2 km with 62.5/125 µm fiber.
Q: Works with non-Schneider PLCs? It is for Modicon Quantum, but Modbus RTU allows generic use.
Q: Is the RS-232 port isolated? No – use an isolator if ground loops exist.
Q: How to check firmware version? Use Modbus diagnostic request or LED patterns.
Why Buy From Oiltech Controls?
- 15+ years in industrial automation spare parts
- Global shipping support – fast delivery
- Tested surplus and refurbished options
- 12-month warranty for peace of mind
- Technical verification before shipment
- Support for obsolete control systems
Contact us: info@oiltechcontrols.com | +86 158 8020 0923 (WhatsApp)
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