Overview
When your automation system demands reliable communication and flexible expansion, the Schneider Electric TSX3721101 modular base controller delivers. Designed for TSX Micro 37/21/22 PLC configurations, this base controller integrates seamlessly into industrial control networks. It provides essential connectivity and processing power for medium-scale applications.
Technical Specifications
The TSX3721101 offers three slots for I/O modules, allowing you to customize your system. It includes one Modbus RTU serial link operating at 19.2 kbit/s and one Uni-Telway serial link (TER/AUX) also at 19.2 kbit/s. A real-time clock is built in for time-stamped data logging. Memory includes internal RAM of 128 Kwords for data storage, 20 Kwords for data, and 15 Kwords of Flash for data. With a PCMCIA card, you get an additional 128 Kwords for program and data. Execution times are 0.13 µs for Boolean operations without a PCMCIA card and 4.5 µs for arithmetic REAL floating without a PCMCIA card. The application structure supports one fast task, one master task, and 16 event tasks. System overhead is 1.6 ms for the master task. Protection includes overload and short-circuit protection. Total useful secondary power is 16 W. Electromagnetic compatibility meets IEC 61131-2 and several IEC 1000-4 standards at level 3. Operating temperature range is 0 to 60 °C, storage temperature is -25 to 70 °C, and relative humidity is 5 to 95% without condensation. Operating altitude is 0 to 2000 m. Dimensions are 341.4 mm width, 151 mm height, and 152 mm depth. Product weight is 1.72 kg.
Industry Applications
Manufacturing lines that require coordinated control between multiple stations benefit from the TSX3721101's Modbus RTU and Uni-Telway links. For example, a packaging line can use the controller to synchronize conveyors and labeling machines. The real-time clock enables precise event logging for quality audits. In material handling systems, the three slots allow mixing analog and digital I/O modules to monitor sensors and actuators. The fast task and event tasks handle time-critical operations like emergency stops or high-speed counting.
Installation & Setup Guidance
Mount the TSX3721101 on a DIN rail or panel within a control cabinet. Ensure ambient temperature stays between 0 and 60 °C and relative humidity remains below 95% without condensation. Connect the Modbus RTU link using shielded twisted-pair cable for reliable communication at 19.2 kbit/s. The Uni-Telway serial link (TER/AUX) can be used for programming or auxiliary device connection. Insert I/O modules into the three slots as needed. Verify that total secondary power does not exceed 16 W to avoid overload. Follow local electrical codes for wiring and grounding.
Maintenance & Reliability
Periodically inspect the controller for dust accumulation and ensure ventilation slots remain clear. Check all cable connections for tightness and signs of wear. The overload and short-circuit protection features help prevent damage from electrical faults. Operating within the specified temperature and humidity range extends service life. The modular design simplifies replacement of individual I/O modules without disturbing the base controller.
Compatibility & Integration
The TSX3721101 works with TSX Micro 37/21/22 PLC configurations. It communicates via Modbus RTU at 19.2 kbit/s and Uni-Telway at 19.2 kbit/s. The three slots accept a variety of Schneider I/O modules. A PCMCIA card can be added for expanded memory (128 Kwords program and data). The real-time clock supports time-stamped data for SCADA or HMI integration.
Selection Guide & Purchasing Advice
Before purchasing the TSX3721101, verify that your application requires a 3-slot base controller with Modbus RTU and Uni-Telway communication. Confirm that the total power consumption of your I/O modules stays within the 16 W limit. If you need additional memory, order a compatible PCMCIA card separately. SpareTechPLC offers this controller with fast shipping and technical support to help you select the right configuration.
Frequently Asked Questions
Q: What communication protocols does the TSX3721101 support?
A: It supports one Modbus RTU link at 19.2 kbit/s and one Uni-Telway serial link (TER/AUX) at 19.2 kbit/s.
Q: How many I/O slots does the TSX3721101 have?
A: It has three slots for I/O modules.
Q: Does the TSX3721101 include a real-time clock?
A: Yes, a real-time clock is integrated.
Q: What is the maximum operating temperature for this controller?
A: The ambient air temperature for operation is 0 to 60 °C.
Q: Can I add extra memory to the TSX3721101?
A: Yes, using a PCMCIA card you can add 128 Kwords of program and data memory.
