Schneider 172JNN21032 Modicon Momentum Serial Link Adapter Module

Product Overview

When integrating serial communication into a Modicon Momentum automation platform, the Schneider Electric 172JNN21032 provides a reliable and compact solution. This serial link adapter module operates on a rated supply voltage of 5 V DC and draws 700 mA at 12 V DC. It supports both RS-232 and RS-485 serial links, selectable via a single 9-pin D-shell Modbus Plus connector. The module is designed for environments requiring IP20 protection and conformal coating, ensuring durability in controlled industrial settings.

Technical Specifications Breakdown

The 172JNN21032 offers several key specifications that define its performance:

Rated Supply Voltage: 5 V DC with a tolerance of +/- 5%, ensuring stable operation when powered via the I/O base.

Current Consumption: 700 mA at 12 V DC, allowing for efficient power usage in the control cabinet.

Communication Port: One selectable RS-232 or RS-485 serial link, with a 9-pin D-shell connector for Modbus Plus.

Battery: A lithium 2/3 AA battery with a 5-year lifespan and less than 30-day autonomy after low-battery indication at 40 °C.

Environmental Ratings: Operating temperature 0 to 60 °C, storage -40 to 85 °C, and operating altitude up to 2000 m.

These parameters make the module suitable for applications where reliable serial communication and long battery life are critical.

Industry Applications

The 172JNN21032 is ideal for manufacturing and process control systems that require Modbus Plus connectivity. For example, in a packaging line, the module can link a Momentum PLC to remote I/O or operator interfaces via RS-485, ensuring real-time data exchange. In building automation, it can connect to HVAC controllers using RS-232, providing flexible integration. Compared to other serial adapters, the 172JNN21032 offers a compact form factor (25 mm x 143.1 mm x 60.06 mm) and conformal coating, which enhances reliability in humid or dusty environments.

Installation & Setup Guidance

Mount the 172JNN21032 onto the Modicon Momentum I/O base using the standard module format. Ensure the supply voltage is within 5 V DC +/- 5% and that the I/O base provides adequate power. Connect the serial cable to the 9-pin D-shell connector, selecting either RS-232 or RS-485 via software configuration. The single communication LED provides visual status indication. For optimal performance, keep the module within its operating temperature range (0 to 60 °C) and avoid condensation.

Maintenance & Reliability

Routine inspection of the 172JNN21032 should focus on the lithium battery, which has a typical lifespan of 5 years. Replace the battery when the low-battery indicator activates, ensuring less than 30 days of autonomy at 40 °C. The conformal coating protects against moisture and dust, but periodic checks for physical damage or contamination are recommended. The module's IP20 rating means it is not suitable for wet or highly dusty environments without additional enclosure. Following these steps maximizes uptime and extends service life.

Compatibility & Integration

The 172JNN21032 is part of the Modicon Momentum automation platform and integrates seamlessly with Momentum I/O bases and controllers. It supports Modbus Plus communication via the 9-pin D-shell connector, allowing connection to other Modbus Plus devices such as PLCs, drives, and HMIs. The selectable RS-232/RS-485 interface provides flexibility for different serial networks. For systems requiring CE, UL, CSA, or NEMA 250 type 1 certifications, this module meets those standards, ensuring compliance in global installations.

Selection Guide & Purchasing Advice

Before purchasing the 172JNN21032, verify that your Modicon Momentum base supports this serial link adapter and that your application requires either RS-232 or RS-485 communication. Consider the battery replacement cycle (5 years) and ensure the operating environment stays within 0 to 60 °C and below 2000 m altitude. At plcmatrix.com, you can find this module along with compatible Momentum components. Contact our team for current availability and lifecycle status to ensure the best fit for your project.