Description
The Schneider 490NRP25400 is a dedicated fiber optic repeater module designed for the Modicon Quantum automation series. This unit is engineered to extend the reach of Remote I/O (RIO) and Modbus Plus networks by converting electrical signals into optical pulses. By utilizing fiber optic transmission, the module provides essential galvanic isolation, which protects sensitive control equipment from electromagnetic interference (EMI) and ground loops common in high-voltage industrial environments.
Features
- Supports multi-mode fiber optic communication (62.5/125 or 50/125 micrometers).
- Equipped with ST connectors for secure and reliable optical coupling.
- Transparent operation: requires no complex software configuration for data stream repetition.
- Dual optical ports enable flexible network topologies, including point-to-point and star configurations.
- Integrated status LEDs provide real-time diagnostic feedback for link monitoring and fault isolation.
- Reduces signal degradation and timing jitter, supporting high-precision process synchronization.
Applications
This repeater is ideal for large-scale distributed control architectures found in petrochemical refineries, power generation facilities, and mining operations. It is specifically suited for bridging communication between distant Quantum racks where copper cabling would be susceptible to electrical noise or exceed distance limitations.
Technical Specifications
| Model |
490NRP25400 |
| Brand |
Schneider Electric / Modicon |
| Protocol |
Modbus Plus / Remote I/O (RIO) |
| Fiber Type |
Multi-mode |
| Wavelength |
820 nm |
| Max Distance |
3 km |
| Interface |
ST Connectors |
| Power Consumption |
250 mA at 5 VDC |
| Power Dissipation |
1.25 W |
| Isolation |
500 VDC |
| Operating Temperature |
0 to 60 deg C |
| Humidity |
5 to 95 percent (non-condensing) |
Installation Guidelines
- The module occupies a single slot on a standard Modicon Quantum backplane.
- Power is supplied directly through the backplane; no external DC power source is required.
- Ensure the fiber optic cable bend radius is maintained according to manufacturer specifications to prevent signal attenuation at the ST interface.
- Always power down the rack before inserting or removing the module to prevent electrical damage.
- Avoid routing fiber optic cables alongside high-voltage power lines to maintain signal integrity.
FAQ
Does this module require software setup?
No, the 490NRP25400 operates transparently on the network layer and does not require software configuration.
What is the maximum distance supported?
The module supports distances up to 3 km, depending on the specific attenuation characteristics of the fiber optic cable used.
Can this module be used in high-vibration areas?
Yes, the module is designed to meet industrial standards for vibration and shock resistance, making it suitable for installation near heavy machinery.
