Schneider ASPRTU252C TSX Compact

This controller combines CPU and I/O functions for Schneider Modicon Compact automation systems. It executes control logic for small industrial machines and processes. Therefore, it delivers an all-in-one solution for space-constrained applications.

Power Supply and Processor Specifications

The Schneider ASPRTU252C measures 19.0 cm in length and 14.0 cm in width. Moreover, its controller weight equals approximately 1.35 kg for panel or DIN rail mounting. A single power connector accepts 24 VDC from an external industrial supply. Additionally, this compact unit includes 52 built-in I/O points and two communication ports.

Parameter	Specification
Brand	Schneider Electric
Full Model	ASPRTU252C
Category	TSX Compact Controller
Dimensions (L x W x H)	19.0 cm x 14.0 cm x 9.0 cm (7.48″ x 5.51″ x 3.54″)
Controller Weight	1.35 kg (2.98 lbs)
Power Supply Input	24 VDC Nominal (19.2 to 28.8 VDC Range)
Power Consumption	14 W (Typical)
Inrush Current	25 A for 1 ms at Startup
Processor Type	16-bit Microcontroller (20 MHz)
Program Memory	64 kB RAM (Battery Backed)
Data Memory	16 kB RAM (Retentive with Battery)
Backup Battery	Internal Lithium (5 Year Life)
Execution Speed	0.5 µs per Boolean Instruction
Built-In Digital Inputs	32 Channels (24 VDC, Sink/Source)
Digital Input Response	4 ms (Software Configurable)
Built-In Digital Outputs	20 Channels (Transistor, 0.5A)
Output Protection	Short Circuit + Overtemperature
Built-In Counter Inputs	4 High-Speed Counters (10 kHz)
Communication Ports	1 x RS-232 + 1 x RS-485 (Modbus RTU)
Modbus Support	Master or Slave (Software Selectable)
Baud Rate Range	1200 to 115200 baud
Expansion Capability	None (Compact Standalone Unit)
Programming Software	PL7 Compact or ZelioSoft
Programming Languages	Ladder Diagram (LD) + Instruction List (IL)
On-Board Components	1 CPU IC + 2 Memory Chips + 1 Real-Time Clock + 2 UARTs + 32 Input Optocouplers + 20 Output Transistors + 20 Flyback Diodes + 8 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 ASPRTU252C stores energy using seven onboard capacitors. Specifically, three large capacitors filter the 24 VDC input for stable processor operation. In addition, two capacitors smooth the output supply for digital outputs. Similarly, two tantalum capacitors provide high-frequency noise suppression for logic circuits. Furthermore, a lithium battery retains RAM contents and real-time clock settings. Consequently, this compact controller preserves programs and variables for up to five years.

Built-In I/O and High-Speed Counting Capabilities

You will find 32 digital inputs and 20 transistor outputs on removable terminal blocks. For instance, four dedicated inputs function as high-speed counters up to 10 kHz. In addition, these counters handle encoder pulses or high-frequency proximity sensors directly. Moreover, the transistor outputs include short circuit and overtemperature protection. Thus, this controller suits packaging and material handling applications perfectly.

Communication and Standalone Operation Features

Two serial ports provide programming and networking capabilities on this unit. Specifically, the RS-232 port connects to a PC for program uploads and monitoring. Likewise, the RS-485 port supports Modbus RTU communication as master or slave. However, this compact controller does not support I/O expansion modules. Therefore, it operates as a complete standalone solution for smaller machines.

Installation and Diagnostic LED Indicators

Fifty-two green LEDs show the real-time status of all built-in I/O channels. 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. In addition, three removable terminal blocks simplify wiring and maintenance access. Thus, you can diagnose system status quickly at a glance.