Product Overview
When your industrial automation system demands reliable control and protection, the Schneider Electric TSX3721001 modular base controller delivers. This controller module from the TSX Micro PLCs series is designed for applications requiring overload protection and short-circuit protection. Equipped with a real-time clock and substantial memory capacities, it supports complex applications and flexible system design.
Technical Specifications Breakdown
The TSX3721001 offers a robust memory architecture: Internal RAM with 20 Kwords data, Internal RAM (with PCMCIA card) with 128 Kwords program and data, Internal RAM with 128 Kwords data storage, and Flash with 15 Kwords data. This allows you to handle demanding programs and data logging tasks. The maximum size of object areas reaches 256 %Mi, 1 %MWi for internal words, and 128 %KWi for constant words, providing ample space for your logic and variables.
Execution times are efficient for a controller of this class. Without a PCMCIA card, it processes 100% Boolean instructions in 5.88 ms per 1 K instructions, and 65% Boolean with 35% numerical in 0.27 ms. With a PCMCIA card, those times improve to 4 ms and 0.266 ms respectively. The application structure supports 1 fast task, 1 master task, and 16 event tasks, giving you flexibility for time-critical and event-driven processes. System overhead for the master task is only 1.6 ms.
Industry Applications
This controller is ideal for small to medium-sized automation systems where reliable protection and real-time control are critical. For example, in a packaging line, the TSX3721001 can manage multiple conveyor sections with its 16 event tasks, ensuring precise timing and immediate response to jams or faults. The built-in overload and short-circuit protection safeguard downstream devices, reducing downtime.
In building management systems, the real-time clock enables scheduled operations for HVAC or lighting, while the Modbus RTU communication at 19.2 kbit/s integrates seamlessly with supervisory systems. The controller's immunity to microbreaks under 20 ms ensures stable operation even on less-than-perfect power mains.
Installation & Setup Guidance
Mount the TSX3721001 in a suitable enclosure with adequate ventilation. The unit has 3 slots for expansion modules. Connect the primary voltage within the range of 100-240 V AC (90-264 V AC) using appropriate wiring. The input current is 2 mA, with a maximum inrush of 60 A. The output current is 0.5 A. Use the integrated serial link (TER/AUX) for Uni-Telway or the Modbus RTU port for network communication. Ensure all connections are secure and comply with local electrical codes.
Maintenance & Reliability
To maintain reliable operation, periodically inspect the controller for dust accumulation and ensure ambient air temperature stays within 32…140 °F (0…60 °C). The unit is designed for long service life with no routine maintenance required beyond visual checks and cleaning of ventilation paths. The total useful secondary power is 16 W, so verify that connected loads do not exceed this limit.
Compatibility & Integration
The TSX3721001 integrates with the Modicon TSX Micro automation platform. It supports 1 serial link (TER/AUX) Uni-Telway at 19.2 kbit/s and 1 Modbus RTU at 19.2 kbit/s. This allows connection to HMI panels, drives, and other Modbus-compatible devices. The controller can also accept a PCMCIA card for expanded memory or additional communication options.
Selection Guide & Purchasing Advice
Before ordering, verify that the TSX3721001 meets your application requirements for memory, task structure, and communication needs. The weight is 1.00 lbs (0.45 kg) per the specification, though the full description notes a net weight of 3.79 lb(US) (1.72 kg) — please confirm with SpareTechPLC if weight is critical for your installation. SpareTechPLC stocks this controller and can advise on compatible accessories and current lifecycle status.
