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- TSXDEZ12D2
- Discrete Input Module
- France
- 55 × 180 × 260 mm
- 0.23 kg
- Xiamen, China
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Product Overview
The Schneider TSXDEZ12D2 Modicon TSX Micro Discrete Input Module collects 24 V DC signals from field sensors and switching devices for processing by a compatible Modicon TSX Micro PLC. Its 12 input channels support both positive and negative logic, giving the module flexibility when connecting PNP or NPN proximity sensors and other compatible discrete signal sources.
The module uses a screw-terminal connection arrangement, making it suitable for installations where individual field wires are terminated directly at the I/O module. It can acquire signals from proximity sensors, limit switches and other switching devices used to detect machine position, component presence or operating states.
With configurable input response times from 0.1 to 7.5 ms, the TSXDEZ12D2 can support machine-control sequences that depend on timely detection of input transitions. The actual system response also depends on PLC processing, application logic, sensor characteristics and the selected input configuration.
Technical Specifications
| Parameter | Specification |
|---|---|
| Manufacturer | Schneider Electric |
| Model | TSXDEZ12D2 |
| Product Series | Modicon TSX Micro |
| Product Type | Discrete Input Module |
| Number of Inputs | 12 |
| Input Voltage | 24 V DC |
| Input Logic | Positive or negative logic |
| Input Voltage Range | 19–30 V DC |
| Input Current | 9 mA |
| Guaranteed Logic State 1 Voltage | ≥ 11 V |
| Guaranteed Logic State 0 Voltage | < 5 V |
| Guaranteed Logic State 1 Current | ≥ 2.5 mA |
| Guaranteed Logic State 0 Current | ≤ 1.5 mA |
| Input Impedance | 2.4 kΩ |
| Response Time | 0.1–7.5 ms for state transitions in either direction |
| Input Type | Resistive |
| Input Standard | IEC 1131-2 Type 1 |
| Sensor Compatibility | 2-wire and 3-wire PNP/NPN proximity sensors |
| Electrical Connection | 12-point screw terminal block |
| Current Consumption | 123 mA in positive logic; 107 mA in negative logic |
| Isolation Voltage | 1,500 V AC for 1 second |
| Dimensions | 55 × 180 × 260 mm |
| Weight | 0.23 kg |
Product Features
- 12 discrete input channels: Acquires multiple field-device signals through one TSX Micro module.
- Positive and negative logic: Supports both logic arrangements within the specified electrical limits.
- PNP and NPN sensor compatibility: Accepts compatible 2-wire and 3-wire proximity sensors.
- Configurable response time: Supports input response settings from 0.1 to 7.5 ms for state transitions.
- Screw-terminal wiring: Allows individual conductors to be terminated directly at the module.
- Type 1 input characteristics: Conforms to the specified IEC 1131-2 input standard.
- Defined logic thresholds: Provides specified ON-state and OFF-state voltage and current limits for sensor selection and troubleshooting.
- Input isolation: Provides the specified isolation voltage between relevant electrical circuits.
- Compact I/O arrangement: Supports discrete signal acquisition in compatible TSX Micro control systems.
- PLC status acquisition: Makes field-device states available to the control program for sequencing, interlocks and alarms.
Working Principle
The TSXDEZ12D2 monitors the electrical state of its 12 input channels. When a connected sensor or switching contact changes state, the module evaluates the signal against its input thresholds and makes the recognized state available to the PLC application.
The module accepts 24 V DC signals using either positive or negative logic. In positive-logic applications, the ON state must meet the specified minimum voltage and current requirements, while the OFF state must remain below the defined voltage and current limits. Negative-logic applications use the corresponding reversed signal convention. The selected logic arrangement must match the connected field devices and wiring.
The configurable response time ranges from 0.1 to 7.5 ms for transitions in either direction. Input filtering helps determine how the module handles changing signals, while the PLC program processes the resulting input states according to the machine sequence. The complete response time therefore includes more than the module’s input response alone.
When an input behaves inconsistently, technicians should compare the sensor’s output voltage and current with the module’s guaranteed logic thresholds. Incorrect logic selection, unsuitable sensor leakage characteristics, loose screw terminals or unstable field power can all lead to missed or false input states.
Role in a Modicon TSX Micro Control Architecture
The TSXDEZ12D2 serves as the field-signal acquisition interface in a Modicon TSX Micro automation system. It converts electrical states from compatible sensors and switching devices into input information that the PLC can use for machine sequencing, operating-condition monitoring and alarm logic.
| System Component | Function | Relationship to the TSXDEZ12D2 |
|---|---|---|
| Modicon TSX Micro PLC | Executes machine-control logic | Processes the input states acquired by the module |
| 24 V DC Power Supply | Supplies compatible field devices | Powers sensors according to their electrical requirements |
| PNP Proximity Sensor | Detects a target and provides a switching signal | Connects to an input configured for compatible positive-logic operation |
| NPN Proximity Sensor | Provides a switching signal using NPN output behavior | Requires a compatible negative-logic arrangement |
| Limit Switch | Detects a mechanical position or end condition | Supplies discrete state information to the PLC |
| Photoelectric Sensor | Detects products or material movement | Provides object-detection signals |
| Screw-Terminal Wiring | Connects individual field conductors | Provides direct termination for the module’s input channels |
| PLC Application Program | Interprets input states and coordinates operations | Uses the acquired signals for sequences, alarms and interlocks |
| Operator Interface | Displays process states and alarms | Presents information made available by the PLC program |
Industrial Applications
| Application | Operating Requirement | Role of the TSXDEZ12D2 |
|---|---|---|
| Conveyor Equipment | Detect products and monitor transfer positions | Acquires signals from compatible proximity and photoelectric sensors |
| Assembly Machinery | Confirm part presence and fixture status | Supplies discrete input states for operation sequencing |
| Packaging Equipment | Monitor product position and machine-cycle conditions | Transfers sensor states to the PLC program |
| Material Handling Systems | Detect movement limits and transfer events | Provides input information for movement coordination |
| Machine Tools | Monitor clamps, switches and auxiliary machine states | Acquires discrete feedback signals |
| Automated Inspection Stations | Collect part-detection and test-status signals | Makes input states available for inspection sequences |
| Component Feeding Equipment | Detect component presence and feed position | Supports sensor-based feed control |
| Existing TSX Micro Installations | Maintain discrete signal acquisition in a compatible PLC system | Provides 12 input channels for legacy control applications |
Installation and Maintenance
- Verify the module reference: Confirm that the module is TSXDEZ12D2 and that the TSX Micro PLC configuration supports the intended installation.
- Select the correct input logic: Match positive or negative logic to the connected sensors and the field-wiring arrangement.
- Check the sensor voltage: Verify that the input signal and sensor supply fall within the specified 19–30 V DC range.
- Confirm sensor compatibility: Check whether each sensor uses PNP or NPN output and ensure that its electrical characteristics match the selected input logic.
- Inspect screw terminals: Ensure conductors are correctly seated and tightened according to the applicable terminal requirements.
- Check conductor identification: Match each field wire to the terminal assignment and PLC address shown in the electrical drawings.
- Verify input thresholds: Confirm that ON-state and OFF-state voltages and currents meet the module’s guaranteed logic limits.
- Review response-time settings: Select a suitable input response configuration for the signal characteristics and machine operating sequence.
- Test every channel: Operate each connected sensor or switch and verify that the module and PLC register the expected state.
- Inspect field power: Check supply stability and common wiring when several input channels show unexpected states.
- Troubleshoot intermittent signals: Check sensor alignment, conductor continuity, terminal condition, leakage current and electrical interference before replacing the module.
- Record commissioning details: Document the input logic, channel assignments, sensor types, wiring references and verified operating states.
Compatible System Components
| Component | Function | Compatibility Consideration |
|---|---|---|
| Modicon TSX Micro PLC | Executes the control application | Confirm CPU, rack and module configuration compatibility |
| 24 V DC Power Supply | Supplies field sensors | Verify voltage stability and total connected load |
| PNP Proximity Sensor | Provides a discrete detection signal | Confirm compatibility with the selected positive-logic arrangement |
| NPN Proximity Sensor | Provides a discrete detection signal | Confirm compatibility with the selected negative-logic arrangement |
| Photoelectric Sensor | Detects product or material presence | Verify output type, voltage and current limits |
| Limit Switch | Provides mechanical position feedback | Check contact ratings and external circuit requirements |
| Screw-Terminal Wiring Accessories | Organize field conductors | Confirm terminal and conductor compatibility |
| Field Junction Terminals | Distribute sensor signals and supply wiring | Ensure the terminal layout matches the cabinet design |
| PLC Programming Software | Configures the TSX Micro application | Use a version compatible with the installed controller |
Recommended Related Models
| Model | Product Type | Relationship | Selection Consideration |
|---|---|---|---|
| Schneider TSXDEZ12D2K | Modicon TSX Micro Discrete Input Module | Related 12-input model with a different connection and logic arrangement | Check connector type and supported input logic |
| Schneider TSXDEZ32D2 | Modicon TSX Micro Discrete Input Module | Higher-channel-count discrete input option | Verify the 32-input configuration and connection requirements |
| Schneider TSXDEZ08A4 | Modicon TSX Micro Discrete Input Module | Related AC input module | Select only when the field signal voltage and input type match the application |
| Schneider TSXDEZ08A5 | Modicon TSX Micro Discrete Input Module | Related higher-voltage AC input module | Verify the required AC input range and wiring arrangement |
| Schneider TSX Micro PLC | Programmable Logic Controller | Host automation platform | Confirm support for the module and the intended application configuration |
Key Advantages
- Acquires 12 discrete input signals through one TSX Micro module.
- Supports positive and negative 24 V DC input logic.
- Interfaces with compatible PNP and NPN proximity sensors.
- Provides configurable input response times from 0.1 to 7.5 ms.
- Uses screw terminals for direct field-wire termination.
- Supplies discrete signal states for PLC sequencing and machine-status monitoring.
Technical FAQs
How should positive and negative logic be selected for the TSXDEZ12D2?
The selection must match the electrical output behavior of the connected sensors and the field-wiring arrangement. Check the sensor’s PNP or NPN type, ON-state voltage, OFF-state voltage and current characteristics before configuring the input logic.
What can cause an input to remain ON after the connected sensor switches OFF?
Possible causes include sensor leakage current, residual output voltage, an incorrect logic arrangement, wiring faults or a signal that does not fall below the module’s guaranteed OFF-state limits. Measure the signal at the input terminal before changing the PLC program.
When is the configurable 0.1–7.5 ms response time important?
It matters when input transitions must be recognized within a specific machine cycle or when signal noise needs to be filtered. A faster setting may improve response to short transitions, while the overall control response also depends on PLC processing and application logic.
What should be checked if replacing the TSXDEZ12D2 with the TSXDEZ12D2K?
Compare the input logic, electrical connection, channel wiring and supported sensor arrangements. The two references have different connection or input-logic characteristics, so verify the terminal layout and PLC configuration before transferring the existing wiring.