Schneider 170NEF11021 Modicon Momentum Modbus Plus Adapter

Description

Product Overview

The Schneider Electric 170NEF11021 is a Modbus Plus network adapter. It belongs to the Modicon Momentum series for non-redundant systems. This module helps your PLC talk to other devices quickly. It uses twisted pair cable at 1 Mbit/sec speed. For larger applications, explore the Modicon Quantum series for redundant networking needs.

Key Features

• ✔ Non-redundant Modbus Plus network – perfect for standard industrial setups
• ✔ 1 Mbit/sec transmission rate – fast and reliable data exchange
• ✔ Wide temperature range – works from -25°C to +60°C
• ✔ Low power draw – only 2.4 W consumption
• ✔ 2 communication ports – flexible I/O channel configuration
• ✔ Global safety approvals – UL, CSA, and CE certified

Technical Specifications

• Brand: Schneider Electric
• Model: 170NEF11021
• Series: Modicon Momentum
• Application: Non-redundant Modbus Plus network
• Communication Medium: Twisted pair cable
• Transmission Rate: 1 Mbit/sec max
• Data Rate: 1 Mbit/s max
• Input/Output Channels: 2 ports
• Operating Voltage: 24 VDC
• Power Consumption: 2.4 W
• Operating Temperature: -25°C to +60°C
• Storage Temperature: -40°C to +85°C
• Humidity Range: 5% to 95% (non-condensing)
• Mounting Type: DIN rail mount
• Approvals: UL, CSA, CE
• Weight: Approximately 0.6 kg

Physical Dimensions

• Width: 90 mm
• Height: 160 mm
• Depth: 60 mm
• Weight: 0.6 kg (1.32 lbs)

Installation Guide

• Mount the 170NEF11021 on a standard DIN rail.
• Apply 24 VDC power to the module terminals.
• Use twisted pair cable for Modbus Plus connections.
• Keep cable length within Modbus Plus specs (400m per segment).
• Do not install near high-voltage or noisy equipment.
• Allow 50mm clearance around the module for airflow.

Typical Applications

• Connecting PLCs on a factory floor
• Data exchange between multiple controllers
• Legacy system upgrades with Modbus Plus
• Small to medium distributed control systems
• Machine builder networks (non-redundant)

Diagnostic & Troubleshooting Tips

• Check the 24V LED – no light means no power.
• Verify both ports see proper termination resistors.
• Monitor network activity – flickering LEDs show good traffic.
• Test cable continuity if communication drops randomly.
• Keep module temperature below 60°C for stable operation.

Package Contents

• One Schneider Electric 170NEF11021 module
• No cables included – order twisted pair separately
• No mounting base – uses standard DIN rail
• Quick start guide (printed)

Warranty & Shipping

• ✔ 12-month warranty covers manufacturer defects.
• We ship using FedEx, UPS, or DHL express.
• Delivery in 3-7 business days to most countries.
• Tracking number emailed after shipment.

Frequently Asked Questions (FAQ)

Q1. Can I use the 170NEF11021 on a redundant network?
No. The 170NEF11021 only works on non-redundant Modbus Plus networks. For redundant setups, choose a different Momentum model.

Q2. What cable type works best with this module?
Use shielded twisted pair cable (Belden 9841 or equivalent). The 170NEF11021 needs proper impedance for 1 Mbit/sec speed.

Q3. How far can I run the Modbus Plus cable?
Each segment supports up to 400 meters (1,312 feet). The 170NEF11021 can connect up to 32 nodes per segment with repeaters.

Q4. My 170NEF11021 gets very warm – is that normal?
The module dissipates 2.4W as heat. Warm operation is normal up to 60°C ambient. Install in a ventilated panel to extend life.

Q5. Can I mix 170NEF11021 with Quantum series on same network?
Yes. Modbus Plus allows mixed Momentum and Quantum devices. The 170NEF11021 communicates seamlessly with Quantum PLCs using the same 1 Mbit/sec protocol.

Q6. What do the two ports on this module do?
Port A connects to the main network trunk. Port B allows daisy-chaining to another device. Both ports on 170NEF11021 act as a passive tap.

Q7. Is this module obsolete or still supported?
Modbus Plus is a legacy network. The 170NEF11021 remains available for existing system maintenance. For new projects, consider Modbus TCP instead.

Selection Guide

• Need non-redundant Modbus Plus? Choose 170NEF11021.
• Need redundant media? Look at Quantum series with dual cables.
• Need more than 1 Mbit/sec? Consider Ethernet-based options.
• Need to connect 32+ nodes? Add Modbus Plus repeaters.
• Operating below -25°C? Use an enclosure heater with this module.

Contact Us

For inquiries, reach us via WhatsApp: +86 158 8020 0923

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