Schneider Electric 140NOM21200C Redundant Modbus Module

Schneider Electric 140NOM21200C DIO Head-End Adaptor

The 140NOM21200C is an advanced communication interface module within Schneider Electric's Modicon Quantum platform. This DIO head-end adaptor provides robust, redundant network connectivity for critical distributed I/O applications, supporting high-speed Modbus communication.

Technical Specifications

• Brand & Model: Schneider Electric 140NOM21200C
• Product Type: DIO Head-End Adaptor
• System Platform: Modicon Quantum Automation Platform
• Communication Ports: 2 x Modbus Plus (RS-485) and 1 x Modbus (RS-232)
• Network Type: Redundant twisted pair copper for both RS-485 ports
• Transmission Speed: 1 Mbps (1 Mbit/s)
• I/O Capacity: 30 Input words / 32 Output words
• Bus Current: 780 mA requirement
• Power Dissipation: 4 W

Communication & Redundancy Features

• Dual redundant RS-485 ports provide high availability for Modbus Plus networks
• Single RS-232 port for configuration, programming, or legacy device connection
• Designed for compatibility with Quantum remote I/O adaptors 140CRA21210 and 140CRA21220
• Internal diagnostic checks for RAM, RAM address, processor, and checksum ensure data integrity
• Acts as the master controller for a Quantum remote I/O drop network

Environmental Durability

• Operating Temperature: 0 to 60 °C (32 to 140 °F)
• Storage Temperature: -40 to 85 °C (-40 to 185 °F)
• Humidity: Up to 95% non-condensing
• Operating Altitude: Up to 5000 meters (16,404 ft)
• ESD Protection: High immunity: 4 kV (contact), 8 kV (air) per IEC 801-2
• EMC Immunity: 10 V/m (80-2000 MHz) per IEC 801-3
• Protective Coating: Conformal coating (Humiseal 1A33) for defense against harsh industrial conditions

Certifications & Standards

• Safety: UL 508 listed
• Hazardous Location: FM Class 1 Division 2 certified
• Marine: DNV, GL, RINA, RMRS certifications
• Regional: CSA, GOST, C-Tick approvals

Physical & Packaging Details

• Module Format: Standard Quantum module form factor for rack mounting
• Unit Package (PCE): 1 module per box.
• Package Dimensions: 31.5 cm L x 16.5 cm W x 5.0 cm H (12.4" x 6.5" x 2.0").
• Package Weight: 508.0 g (17.9 oz).

Packaging & Shipping

• The 140NOM21200C ships in individual protective packaging.
• Secure, anti-static materials are used to prevent damage during transit.
• Worldwide express shipping via FedEx, UPS, and DHL is available.

Frequently Asked Questions (FAQ)

• What is the key advantage of this model over the 140NOM21100C? This model features two redundant RS-485 ports, providing network redundancy for higher availability systems.
• What does "redundant twisted pair copper" mean? It means the RS-485 network uses two separate communication cables, allowing the system to maintain communication if one cable fails.
• What remote I/O modules does it work with? It is specifically compatible with the 140CRA21210 and 140CRA21220 Quantum remote I/O adaptors.
• What is the I/O word capacity used for? It defines the amount of data (in 16-bit words) that can be exchanged between the Quantum CPU and the remote I/O drop network (30 words in, 32 words out).
• Is the conformal coating important? Yes, the Humiseal coating is crucial for protecting the board's electronics from moisture, dust, and corrosive gases in industrial environments.
• Can it be used in marine applications? Yes, its multiple marine certifications (DNV, GL, RINA, RMRS) make it suitable for shipboard and offshore installations.
• How is it configured? Configuration of the network parameters and I/O mapping is performed within the Quantum PLC programming software, such as Unity Pro.

© 2026 NexAuto Technology Limited. All rights reserved.

Original Source: https://www.nex-auto.com/

Contact: sales@nex-auto.com | Phone: +86 153 9242 9628

Partner AutoNex Controls Limited : https://www.autonexcontrol.com/