Product Overview

The Schneider TSXDMZ28DTK Modicon TSX Micro Discrete Solid State I/O Base DC combines 16 discrete inputs and 12 solid-state DC outputs in one module for compatible Modicon TSX Micro PLC systems. This arrangement allows the controller to collect signals from field sensors while switching DC loads used in machine sequences, material handling and automated equipment.

The 16 inputs accept 24 V DC positive-logic signals from compatible 2-wire and 3-wire proximity sensors and other switching devices. The 12 outputs use solid-state switching with a nominal 24 V DC output supply, supporting connected loads that meet the specified electrical limits. Input acquisition and output switching are handled through separate channel groups, allowing the PLC program to process machine status and issue actuator commands through the same module.

The module uses HE-10 connectors for grouped signal connections. Its input response can be configured from 0.1 to 7.5 ms, while the specified output response is up to 0.5 ms for state transitions. These characteristics are relevant when designing the sequence timing for equipment that combines sensor feedback with frequent DC output switching.

Technical Specifications

Product Features

• 28-point combined I/O: Integrates 16 discrete inputs and 12 solid-state outputs in one module.
• 24 V DC input interface: Acquires positive-logic signals from compatible industrial sensors and switching devices.
• Solid-state output switching: Controls compatible DC loads without mechanical output contacts.
• 0.5 A output rating: Supports individual loads within the specified output-current limits.
• Configurable input response: Allows response settings from 0.1 to 7.5 ms to suit signal characteristics and sequence requirements.
• Fast output response: Provides an output response time of up to 0.5 ms under specified conditions.
• Proximity sensor compatibility: Supports compatible 2-wire and 3-wire proximity sensors.
• HE-10 connections: Groups input and output signals through compatible multiway connectors.
• Separate input and output functions: Allows field feedback and actuator commands to be managed through distinct channel groups.
• TSX Micro integration: Supports combined discrete signal acquisition and output control in compatible Modicon TSX Micro installations.

Working Principle

The TSXDMZ28DTK receives field signals through its 16 input channels. Each input evaluates the incoming 24 V DC signal against the module’s specified voltage and current thresholds. Once the signal is recognized as ON or OFF, the corresponding input state becomes available to the TSX Micro PLC program.

The input response time is configurable from 0.1 to 7.5 ms. This setting affects how input transitions are recognized and should be selected according to the sensor output and machine operating sequence. Sensors whose leakage current or residual voltage falls outside the module’s guaranteed logic limits can cause false states or missed transitions.

The module’s 12 solid-state outputs switch compatible 24 V DC loads according to commands from the PLC. Each output has a rated current of 0.5 A, with a stated maximum current limit of 0.625 A. These limits must not be treated as interchangeable continuous ratings. Load current, switching frequency and the characteristics of inductive devices need to be considered during system design.

When an output command is issued, the corresponding solid-state channel changes state and supplies the connected load according to the output circuit arrangement. During commissioning, each output should be tested under its intended load. If an actuator fails to respond, check the PLC command, output supply, connector wiring and load current before attributing the fault to the module.

Role in a Modicon TSX Micro Control Architecture

The TSXDMZ28DTK serves as a combined field-interface layer in a Modicon TSX Micro automation system. Its input channels deliver sensor information to the PLC, while its output channels switch compatible DC loads in response to the controller’s application logic. This arrangement is useful when a machine requires several feedback signals and actuator commands within the same I/O group.

Industrial Applications

Installation and Maintenance

1. Verify the module reference: Confirm that the installed module is TSXDMZ28DTK and that the Modicon TSX Micro configuration supports the intended I/O arrangement.
2. Check the input supply: Ensure connected sensors provide compatible 24 V DC positive-logic signals within the specified voltage range.
3. Inspect the HE-10 connectors: Check connector alignment, pin condition and secure mating before energizing the system.
4. Verify output power wiring: Confirm that the output supply is connected according to the module’s electrical connection requirements.
5. Check output load current: Ensure each connected load stays within the rated 0.5 A output current and the applicable maximum limits.
6. Confirm sensor compatibility: Verify sensor output type, leakage current and residual voltage against the module’s guaranteed input thresholds.
7. Review channel assignments: Match each field sensor and actuator to the correct connector pin and PLC address using the electrical drawings.
8. Test the input channels: Operate each sensor or switch and confirm that the corresponding input state appears correctly in the PLC application.
9. Test the output channels: Command each output individually and confirm that the connected load switches as expected.
10. Assess inductive loads: Check the suppression requirements for solenoids, relays and other inductive devices to control switching transients.
11. Investigate unexpected states: Check the field supply, connector contacts, wiring, load current and PLC logic before replacing the module.
12. Document commissioning results: Record sensor assignments, output loads, supply arrangements, PLC addresses and functional test results.

Compatible System Components

Recommended Related Models

Key Advantages

• Combines 16 discrete inputs and 12 solid-state outputs in one module.
• Supports 24 V DC positive-logic input signals.
• Provides solid-state DC output switching rated at 0.5 A per channel.
• Supports compatible 2-wire and 3-wire proximity sensors.
• Offers configurable input response times from 0.1 to 7.5 ms.
• Integrates sensor feedback and DC load control in compatible TSX Micro systems.

Technical FAQs

How should the output current rating be interpreted when connecting multiple DC loads?

Each output has a rated current of 0.5 A. The stated 0.625 A maximum current limit is not a replacement for the rated operating current. Check each load’s steady-state demand, startup current and switching behavior, as well as the module’s overall power-dissipation limits.

What can cause a connected proximity sensor to remain detected after its target moves away?

Check the sensor’s OFF-state leakage current and residual voltage against the module’s input thresholds. Incorrect wiring, unsuitable sensor characteristics or a loose connector can also cause a persistent input state. Measure the signal at the input connection before changing the PLC program.

Why might the input state change correctly while the corresponding actuator does not operate?

Input acquisition and output switching are separate functions. Check whether the PLC program has issued the expected output command, then verify the output supply, connector pinout, load wiring and load current. If an inductive load is involved, inspect its suppression arrangement as well.

What should be checked when replacing a TSXDMZ28DTK with a TSXDMZ28DT?

Compare the output connection arrangement, terminal assignments, field wiring and required accessories. Although both references belong to the TSX Micro 28-point combined I/O family, the connection details must be verified before transferring existing wiring or commissioning the replacement.