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- Schneider
- TSX3705028DR1
- Modular Base Controller
- France
- 187.3 × 151 × 152 mm
- 2.37 kg
- Xiamen, China
- New & In Stock
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Product Overview
The Schneider Electric TSX3705028DR1 TSX Micro 37 Modular Base Controller is a programmable logic controller from the Modicon TSX Micro family, intended for discrete machine control and industrial automation applications. Its modular architecture allows the controller to coordinate input signals, execute stored logic, and manage output devices as part of a machine or process-control system.
In a typical installation, the controller receives signals from push buttons, limit switches, proximity sensors, and other field devices. It evaluates these signals according to the application program, then changes output states to operate contactors, indicator lamps, solenoid valves, and other control equipment. This makes the TSX Micro platform suitable for equipment that relies on defined operating sequences, permissive conditions, and interlocks.
The TSX3705028DR1 is associated with the TSX 37 controller range, where the base controller forms the core of the control system and compatible expansion hardware can extend its I/O capabilities. The exact system arrangement depends on the controller’s onboard resources, installed modules, communication requirements, and application program.
For replacement or maintenance work, the complete reference matters. Confirming the controller version, supply requirements, I/O configuration, communication interfaces, and program compatibility helps prevent wiring errors and unexpected differences in machine behavior.
Technical Specifications
| Parameter | Specification |
|---|---|
| Manufacturer | Schneider Electric |
| Product Family | Modicon TSX Micro |
| Model | TSX3705028DR1 |
| Product Type | Modular Base Programmable Controller |
| Controller Series | TSX 37 |
| Controller Function | Programmable logic control for industrial automation |
| Programming Environment | PL7-2 / PL7-3, depending on controller configuration and supported functions |
| System Architecture | Modular controller with expansion capabilities |
| Product Dimensions | 187.3 × 151 × 152 mm |
| Product Weight | 2.37 kg |
Product Features
- Programmable control: Executes stored logic for machine sequencing, signal processing, and output control.
- Modular system architecture: Works within a compatible TSX 37 configuration that can incorporate expansion hardware.
- Discrete signal handling: Supports automation tasks based on machine states, switches, and sensor inputs through the applicable I/O configuration.
- Machine-sequence coordination: Can manage operating steps, permissive conditions, and control interlocks defined in the application program.
- Industrial control integration: Connects controller logic with field devices through the appropriate I/O and interface hardware.
- Legacy program continuity: Can be relevant to maintaining equipment whose control logic and electrical design were built around the TSX Micro platform.
The controller’s exact onboard I/O, communication options, memory resources, and expansion limits must be established from the specific hardware version. These characteristics should not be inferred solely from the TSX 37 family name.
Working Principle
The TSX3705028DR1 executes a stored control program in a repeated scan cycle. During operation, the controller reads available input states, processes the application logic, and updates the relevant outputs.
Field Inputs → Input Processing → PLC Program Execution → Output Updates → Machine Response
For example, in a machine with a guarded working area and a pneumatic actuator, the controller may monitor operator commands, position switches, and process-completion signals. The program evaluates the required conditions before commanding the next operation through the relevant output circuit.
The controller itself does not directly provide the switching capacity required by every industrial load. Contactors, interposing relays, protective devices, and suitable output modules may be needed depending on the electrical characteristics of the connected equipment.
In a modular installation, expansion hardware adds the required signal channels or specialized functions. The controller program must be consistent with the installed hardware and its I/O assignment. Changes to module positions, channel allocation, or communication configuration should therefore be checked before the machine is returned to service.
Role in a Modicon TSX Micro Control Architecture
The TSX3705028DR1 acts as the central controller in a TSX Micro 37 system. It processes field signals, runs the application program, and communicates with connected equipment through its built-in serial interfaces and compatible expansion modules.
Sensors and Operator Controls → TSX Micro 37 Controller → Relay Outputs → Machine Equipment
| System Component | Function |
|---|---|
| TSX3705028DR1 | Executes control logic and manages the base controller’s I/O |
| AC Power Supply | Provides the controller’s primary operating power |
| Discrete Input Devices | Supply machine status and operator-command signals |
| Relay Output Circuits | Switch compatible control loads |
| TSX Micro Expansion Modules | Add supported I/O channels or specialized functions |
| Modbus RTU Devices | Exchange data through the controller’s Modbus serial interface |
| Uni-Telway Devices | Communicate with compatible equipment using the Uni-Telway protocol |
| Contactors and Interposing Relays | Switch loads requiring external power switching or electrical separation |
| Programming Computer and Interface | Provide access to the application program using compatible PL7 tools |
The controller has two module slots for compatible expansion hardware. Module selection and placement must follow the TSX Micro system configuration rules, and the application program must match the installed hardware and I/O assignments.
Industrial Applications
| Application | Typical Use |
|---|---|
| Machine Automation | Executing discrete machine sequences and coordinating operating steps |
| Packaging Equipment | Processing sensor signals and controlling relay-operated mechanisms |
| Conveyor Systems | Managing start/stop logic, position sensing, and equipment interlocks |
| Material Handling | Coordinating machine states and actuator commands |
| Assembly Equipment | Controlling repetitive operations based on sensor feedback |
| Utility Control Panels | Operating auxiliary equipment through discrete control logic |
| Industrial Process Equipment | Monitoring operating conditions and controlling equipment through compatible I/O |
| Serial Communication Systems | Exchanging control data with compatible Modbus RTU or Uni-Telway devices |
Installation and Maintenance
- Confirm the model reference. Check the full TSX3705028DR1 designation and the controller’s terminal layout before wiring.
- Check the power supply. The controller’s primary supply is rated for 100–240 V AC, with a specified operating range of 90–264 V AC at 50–60 Hz.
- Provide suitable panel mounting. Secure the base controller using compatible mounting hardware and maintain the required clearances for wiring and ventilation.
- Isolate power before servicing. Disconnect the relevant supplies and verify that the equipment is de-energized before changing wiring or modules.
- Inspect input connections. Check the 24 V DC input circuits, sensor wiring, common connections, and input assignments against the control drawings.
- Check relay output loads. Verify voltage and current requirements, including the specified output current limit, and use appropriate external protection for connected loads.
- Inspect communication wiring. Confirm the correct interface, cable, pin assignment, and communication settings for Modbus RTU or Uni-Telway equipment.
- Back up the application program. Where the required programming interface and software are available, preserve the existing program before changing hardware or logic.
- Verify expansion modules. Check that installed modules are supported by the base controller and that the program uses the correct I/O addresses.
- Test the system in a controlled state. Confirm input status, output response, serial communication, and operating sequence before returning the machine to normal production.
- Inspect for electrical deterioration. Look for loose terminals, damaged insulation, corrosion, and heat discoloration during scheduled maintenance.
- Document changes. Record replacement hardware, wiring adjustments, program revisions, and communication settings.
When troubleshooting, distinguish between controller power, input status, program execution, output switching, and communication faults. This makes it easier to identify whether a problem originates in the base controller, field wiring, connected equipment, or application configuration.
Related Components
| Component | Function |
|---|---|
| TSX Micro Discrete I/O Modules | Expand discrete input or output capacity in supported configurations |
| TSX Micro Analog I/O Modules | Add analog signal acquisition or output functions where compatible |
| TSX Micro Communication Modules | Extend communication capabilities in supported system configurations |
| Modbus RTU-Compatible Devices | Exchange data with the controller through its built-in Modbus serial link |
| Uni-Telway-Compatible Devices | Provide serial communication with compatible automation equipment |
| 24 V DC Control Supply | Powers compatible input devices and associated control circuits |
| Interposing Relays | Provide additional switching capacity or electrical separation for output loads |
| Contactors | Switch motors and other power circuits under PLC control |
| Programming Interface and Cable | Connect compatible programming equipment to the controller |
| TSX Micro Expansion Hardware | Adds supported I/O or application-specific capabilities |
Recommended Related Models
| Model / Product Family | Product Type | Typical Application |
|---|---|---|
| Schneider TSX3705028 | Modicon TSX Micro 37 Base Controller | Related TSX Micro 37 controller configuration |
| Schneider TSX3721001 | Modicon TSX Micro 37 Base Controller | Alternative TSX 37 controller configuration |
| Schneider TSXDMZ28DR | TSX Micro Discrete I/O Module | Expanding discrete signal capacity in compatible systems |
| Schneider TSXDMZ64DTK | TSX Micro Discrete I/O Module | Higher-density discrete I/O expansion in supported configurations |
| Schneider TSXAEY414 | TSX Micro Analog Input Module | Acquiring compatible analog signals |
| Schneider TSXASY410 | TSX Micro Analog Output Module | Providing analog output functions in supported systems |
| Schneider TSXSCM2211 | TSX Micro Communication Module | Additional serial communication capability in compatible configurations |
| Schneider TSX Micro I/O Modules | Modular I/O Product Family | Extending compatible TSX Micro controller installations |
Key Advantages
- Integrates programmable logic control and relay outputs in a compact base controller.
- Provides 16 discrete inputs and 12 relay outputs for supported configurations.
- Offers built-in Modbus RTU and Uni-Telway serial communication.
- Provides two slots for compatible expansion modules.
- Supports defined machine sequences, interlocks, and event-driven control logic.
- Fits established automation architectures built around the Modicon TSX Micro platform.
Technical FAQs
What are the main I/O characteristics of the TSX3705028DR1?
The TSX3705028DR1 is a TSX Micro 37 05/08 configuration with 16 discrete inputs and 12 relay outputs. The relay outputs have a specified output current of 0.5 A. Check the electrical ratings and load requirements for each circuit before connecting field equipment.
What power supply does this controller require?
Its primary supply is 100–240 V AC, with a specified operating range of 90–264 V AC at 50–60 Hz. The controller also provides useful secondary power with a total rating of 24 W. External devices must be supplied according to their own electrical requirements.
Which communication protocols are built into the TSX3705028DR1?
The controller has one Modbus RTU serial link rated at 19.2 kbit/s and one Uni-Telway serial link rated at 19.2 kbit/s. Correct communication depends on compatible devices, suitable cabling, matching settings, and the appropriate application configuration.
How should expansion modules be selected for this controller?
The TSX3705028DR1 has two module slots for compatible TSX Micro expansion hardware. Select modules according to the required signal type, channel count, electrical characteristics, slot compatibility, and application needs. After installation, verify the I/O addresses and program configuration before operating the machine.