Schneider TSX3710128DR1 Base Controller

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

Power Supply and Processor Specifications

The Schneider TSX3710128DR1 measures 18.5 cm in length and 13.0 cm in width. Moreover, its controller weight equals approximately 1.15 kg for DIN rail or panel mounting. A single power connector accepts 24 VDC from an external industrial supply. Additionally, this base controller includes 28 built-in I/O points and an expansion bus.

Parameter	Specification
Brand	Schneider Electric
Full Model	TSX3710128DR1
Category	Modular Base Controller (CPU)
Dimensions (L x W x H)	18.5 cm x 13.0 cm x 8.5 cm (7.28″ x 5.12″ x 3.35″)
Controller Weight	1.15 kg (2.54 lbs)
Power Supply Input	24 VDC Nominal (19.2 to 28.8 VDC Range)
Power Consumption	12 W (Typical)
Inrush Current	30 A for 2 ms at Startup
Processor Type	16-bit Microcontroller (24 MHz)
Program Memory	128 kB RAM (Battery Backed)
Data Memory	32 kB RAM (Retentive with Battery)
Backup Battery	TSX BAT LITHIUM (5 Year Life)
Execution Speed	0.3 µs per Boolean Instruction
Built-In Digital Inputs	16 Channels (24 VDC, Sink/Source)
Built-In Digital Outputs	12 Channels (Relay, 2A)
Built-In Analog Inputs	2 Channels (0-10 VDC or 4-20 mA)
Built-In Analog Outputs	1 Channel (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 + 3 Memory Chips + 1 Real-Time Clock + 2 UARTs + 16 Input Optocouplers + 12 Relay Drivers + 6 Protection Diodes
Operating Temperature	0°C to +55°C (32°F to 131°F)
Mounting Type	DIN Rail (EN 50022) or Panel Mount

Energy Storage and Data Retention Features

The Schneider TSX3710128DR1 stores energy using five onboard capacitors. Specifically, three electrolytic capacitors filter the 24 VDC input for stable processor operation. In addition, two tantalum capacitors provide high-frequency noise suppression for digital circuits. Furthermore, 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.

Built-In I/O and Communication Capabilities

You will find 16 digital inputs and 12 relay outputs on removable terminal blocks. Similarly, two analog inputs and one analog output expand the controller’s measurement capabilities. For instance, the RS-232 port supports programming and HMI connectivity directly. Likewise, the RS-485 port handles Modbus RTU networking for up to 31 slave devices. Thus, this base controller operates as a standalone unit without additional modules.

Installation and Diagnostic LED Indicators

Sixteen green LEDs show the status of each digital input channel. Meanwhile, twelve green LEDs display the on/off state of each relay output channel. First, a green Power LED lights when the 24 VDC supply is present. Second, a green Run LED flashes during normal program execution. Third, a red Fault LED indicates hardware or software errors. Finally, a yellow Battery Low LED warns when the backup battery needs replacement. Therefore, you can diagnose system status at a glance.