Schneider TSX3722101 Modular Base Controller

This controller serves as the CPU unit for Schneider Modicon TSX Micro automation systems. It executes application logic for small to medium industrial processes. Therefore, it provides reliable control for packaging, conveying, and assembly lines.

Technical Specifications of Schneider TSX3722101

The Schneider TSX3722101 measures 13.0 cm in length and 10.0 cm in width. Its controller weight equals approximately 0.45 kg for DIN rail or panel mounting. A single power connector accepts 24 VDC from an external industrial supply. Additionally, the base controller includes built-in communication ports and an expansion bus.

Parameter	Specification
Brand	Schneider Electric
Full Model	TSX3722101
Category	Modular Base Controller (CPU)
Dimensions (L x W x H)	13.0 cm x 10.0 cm x 8.5 cm (5.12″ x 3.94″ x 3.35″)
Controller Weight	0.45 kg (0.99 lbs)
Power Supply Input	24 VDC Nominal (19.2 to 28.8 VDC Range)
Power Consumption	8 W (Typical)
Processor Type	16-bit Microcontroller (20 MHz)
Program Memory	72 kB RAM (Battery Backed)
Data Memory	28 kB RAM (Retentive with Battery)
Backup Battery	TSX BAT LITHIUM (5 Year Life)
Execution Speed	0.5 µs per Boolean Instruction
Built-In I/O	2 Analog Inputs (0-10 VDC or 4-20 mA)
Communication Ports	1 x RS-232 (TER/Programming) + 1 x RS-485 (AUX/Modbus)
Expansion Bus	Yes (Supports Up to 7 TSX Micro I/O Modules)
Maximum Digital I/O	256 Points (with Expansions)
Maximum Analog I/O	64 Channels (with Expansions)
Programming Software	PL7 Micro or Unity Pro
Programming Languages	Ladder Diagram (LD) + Instruction List (IL) + Structured Text (ST)
On-Board Components	1 CPU IC + 2 Memory Chips + 1 Real-Time Clock + 2 UARTs + 4 Protection Diodes
Energy Storage	2 x 220 µF Electrolytic Capacitors (35V) + 1 x 47 µF Tantalum (16V) + 1 x CR2032 Backup Battery
Battery Backup Time	5 Years (Typical for RAM and RTC Retention)
Scan Time	1.5 ms for 4 kB of Ladder Logic
Operating Temperature	0°C to +55°C (32°F to 131°F)
Mounting Type	DIN Rail (EN 50022) or Panel Mount
Status Indicators	1 Green LED (Power) + 1 Green LED (Run) + 1 Red LED (Fault) + 1 Yellow LED (Battery Low)

Energy Storage and Data Retention

The Schneider TSX3722101 stores energy using three onboard capacitors. Two electrolytic capacitors filter the 24 VDC input for stable processor operation. A tantalum capacitor provides high-frequency noise suppression for digital circuits. Moreover, a CR2032 lithium battery retains RAM contents and real-time clock settings. Consequently, this controller preserves programs and variables for up to five years without external power.

Communication and Expansion Capabilities

You will find two serial ports for programming and networking. The RS-232 port (TER) connects to a PC for program uploads and monitoring. The RS-485 port (AUX) supports Modbus RTU communication with up to 31 devices. An expansion bus allows connection of up to seven TSX Micro I/O modules. Thus, this controller grows with your application needs.

Installation and Diagnostic LEDs

Four LED indicators sit on the front panel for quick diagnostics. A green Power LED lights when the 24 VDC supply is present. A green Run LED flashes during normal program execution. A red Fault LED indicates hardware or software errors. A yellow Battery Low LED warns when the backup battery needs replacement.