Product Overview
When your industrial network demands reliable communication without redundancy overhead, the Schneider Electric 170NEF11021 delivers. This Modicon Momentum series module serves as a dedicated interface for non-redundant Modbus Plus networks, ensuring swift data exchange at 1 Mbit/s over twisted pair cable. Its compact DIN Rail Mount design simplifies installation in crowded control panels, while approvals from UL, CSA, and CE guarantee compliance with global safety standards.
Technical Specifications Breakdown
The 170NEF11021 operates on a 24 VDC supply with a low power consumption of just 2.4 W, making it energy-efficient for continuous operation. It features two input/output ports for flexible network topology, supporting a maximum data rate of 1 Mbit/s. The unit withstands operating temperatures from -25°C to +60°C and storage conditions from -40°C to +85°C, with a humidity tolerance of 5% to 95% non-condensing. These specifications ensure stable performance even in harsh industrial environments.
Industry Applications
In manufacturing plants, the 170NEF11021 connects PLCs and remote I/O nodes on a Modbus Plus backbone, enabling real-time data acquisition for process control. For material handling systems, its two-port design allows daisy-chaining multiple devices without additional switches, reducing wiring costs. The non-redundant architecture suits applications where downtime is tolerable but cost efficiency is critical, such as packaging lines or simple conveyor systems.
Installation & Setup Guidance
Mount the 170NEF11021 directly onto a standard DIN rail using the integrated clip. Connect twisted pair cable to the two RJ45-style ports, ensuring proper termination per Modbus Plus specifications. Apply 24 VDC power to the terminal block, observing polarity. The module automatically configures to the network, requiring no manual address switches. Verify communication by checking the front panel LED indicators for activity and fault status.
Maintenance & Reliability
Regularly inspect cable connections for corrosion or looseness, especially in high-vibration areas. Keep the enclosure free of dust and moisture to maintain the rated humidity range. With a power draw of only 2.4 W, the module generates minimal heat, reducing thermal stress on adjacent components. Its solid-state design eliminates moving parts, ensuring long service life with minimal intervention.
Compatibility & Integration
The 170NEF11021 integrates seamlessly with Modicon Momentum processors and other Modbus Plus devices. It supports twisted pair cable as the communication medium, standard for Modbus Plus networks. Use it as a node in a non-redundant bus topology, connecting up to 64 devices per segment. For system expansion, pair it with Momentum digital or analog I/O modules. Always verify firmware compatibility with your host PLC before commissioning.
Selection Guide & Purchasing Advice
Before ordering, confirm your network requires non-redundant Modbus Plus communication. The 170NEF11021 is not suitable for redundant or dual-cable configurations. Ensure your power supply provides clean 24 VDC within the module's tolerance. For replacement or new installations, verify the existing cable type matches twisted pair specifications. SpareTechPLC stocks genuine Schneider 170NEF11021 modules with full warranty and fast shipping. Contact our team for bulk pricing or expedited delivery options.
Frequently Asked Questions
Q1: Can the 170NEF11021 be used on a redundant Modbus Plus network?
No, this module is designed specifically for non-redundant Modbus Plus networks. For redundant applications, use the 170NEF11031 or similar redundant interface.
Q2: What is the maximum cable length for the twisted pair connection?
While the module supports standard Modbus Plus cabling, the maximum segment length depends on cable quality and baud rate. For 1 Mbit/s, typical maximum is 500 meters per segment.
Q3: Does the 170NEF11021 require external termination resistors?
Yes, Modbus Plus networks require termination at both ends of the bus. Use 120-ohm resistors across the signal pair at the first and last nodes.
Q4: What do the LED indicators on the front panel mean?
The module includes a power LED (green when powered), a communication activity LED (flashing during data transmission), and a fault LED (red on error).
Q5: Is the 170NEF11021 compatible with Modicon M340 or Quantum controllers?
The 170NEF11021 is part of the Modicon Momentum series and is primarily designed for Momentum processors. For integration with other Modicon families, a bridge or gateway may be required.
