Schneider TSX3721001 TSX Micro Controller Module

The Schneider TSX3721001, also cataloged as the TSX3721001 PLC Controller Module, operates as a dedicated hardware component for user program execution and centralized I/O management within TSX Micro 37 21/22 PLC platforms. The hardware integrates a central processing unit, power supply assembly, and a 3-slot chassis base into a single mechanical housing. The module executes structural application code mapped into dedicated internal memory locations, using an integrated serial connection to handle local logic processing, discrete loop monitoring, and standard network data transfers.

Hardware Specifications

Deterministic Network and Backplane Bus Communications

The Schneider TSX3721001 utilizes internal timing logic to control slot transactions over the backplane bus, adhering to standard backplane bus communication velocity licenses. The local processing core updates data tables via dedicated internal register mapping to preserve sequence integrity across the 3-slot base assembly.

To synchronize variable loops over Profinet / EtherNet/IP deterministic networks or serial topologies, the module drives integrated Uni-Telway and Modbus RTU protocols directly at 19.2 kbit/s. The hardware manages the 1.6 ms master task system overhead independently from the 16 event-driven subroutines, maintaining accurate I/O density scaling profiles and predictable data prioritization when communication expansions are added via PCMCIA form factor interfaces.

Frequently Asked Questions

Q: How does the TSX3721001 react to short-duration primary power supply dropouts?

A: The internal power supply stage features native immunity to microbreaks under 20 ms. If the primary voltage input falls below the 90 V AC lower threshold for a duration exceeding this 20 ms window, the hardware executes a systematic shutdown sequence to shield memory registers from corruption.

Q: Can this hardware chassis accept standard Modicon Quantum communication or I/O modules?

A: No. The backplane bus structure, physical dimensions, and pin terminal allocations are engineered exclusively for the TSX Micro 37 platform. There is no physical or electrical cross-compatibility with Modicon Quantum, M340, or M580 automation hardware.

Q: What are the application memory limitations when operating without an optional PCMCIA card expansion?

A: Without an external PCMCIA memory card, the application memory relies on the internal RAM configuration, limiting data storage structures to 20 Kwords and flash memory data routines to 15 Kwords.

Field Installation Guidelines

• Isolate the incoming 100-240 V AC supply line externally before wiring the primary power input terminals on the controller base.
• Secure the PLC module chassis inside the control enclosure using the integrated mounting plate holes, verifying correct grounding contact between the chassis base and the metal panel.
• Install a low-impedance copper wire strap from the main chassis ground terminal directly to the central cabinet earth bar to comply with IEC 61131-2 electromagnetic interference protection standards.
• Separate all low-voltage serial network communication links (TER/AUX) from high-voltage inductive AC motor circuits by at least 30 cm inside the wiring trunks.
• Confirm that the lithium memory retention backup battery is connected and functioning within specified voltage thresholds before loading modified system configuration scripts