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Product Introduction
The Schneider Electric TM2DDO8TT is a robust 8-channel discrete output module featuring transistor outputs. Designed to integrate seamlessly with the Modicon TM2 I/O expansion range, it serves as an ideal solution for applications that require fast, reliable digital output performance. As a key component of the Modicon M221, M241, and M251 logic controller ecosystems, the TM2DDO8TT allows users to expand output capabilities efficiently in machine and process automation systems.
This module offers sinking (NPN logic) transistor outputs rated at 24 VDC, delivering precise and high-speed switching suited for actuators, solenoids, pilot lights, and other output devices. With its compact DIN rail-mountable design, integrated diagnostics, and protective features, the TM2DDO8TT is a preferred choice for engineers aiming to improve modularity, reduce panel space, and maintain performance in dynamic control environments.
Technical Specifications
| Parameter | Details |
|---|---|
| Product Name | TM2DDO8TT |
| Manufacturer | Schneider Electric |
| Product Type | Discrete Output Module |
| Series | Modicon TM2 |
| Number of Outputs | 8 |
| Output Type | Transistor Output (Sinking, NPN logic) |
| Rated Output Voltage | 24 VDC (20.4 to 28.8 VDC operating range) |
| Max Output Current/Channel | 0.5 A |
| Max Total Output Current | 4 A (total for all channels) |
| Output Delay (OFF to ON / ON to OFF) | <0.2 ms |
| Isolation Voltage | 500 V (between output and internal logic) |
| Protection | Overload, short-circuit, overtemperature protection |
| Connection Type | Removable HE10 connector (10-point) |
| Mounting Type | DIN rail (35 mm standard rail) |
| Power Supply | From controller backplane |
| Status Indicators | LED per channel for output status |
| Operating Temperature | 0°C to +55°C |
| Storage Temperature | -40°C to +70°C |
| Relative Humidity | 5% to 95%, non-condensing |
| Certifications | CE, UL, CSA, RoHS, IEC 61131-2 |
| Dimensions (W × H × D) | 84.6 x 90 x 27.3 mm |
| Weight | 0.085 kg |
Product Applications
The TM2DDO8TT module supports precise and fast digital output control, making it suitable for a wide variety of industrial automation tasks. It is particularly effective in applications that require sinking outputs and low-channel count configurations.
-
Compact Machinery Automation
Ideal for controlling actuators, indicators, and alarms in small or embedded machine systems. -
Material Sorting and Handling Equipment
Interfaces with diverters, conveyor solenoids, and stackers. -
Packaging Equipment
Drives real-time digital outputs for labeling, wrapping, and sealing processes. -
HVAC and Building Automation
Activates dampers, fans, or lighting via digital outputs in commercial systems. -
Test and Measurement Systems
Provides output control for triggering relays or control signals during automated testing. -
Control Cabinets with Limited Space
With only 27 mm width, the module fits efficiently into space-constrained panels.
Product Advantages
-
Fast and Precise Output Switching
Sub-millisecond response times ensure optimal performance in high-speed applications. -
Compact Footprint
Slim design allows for dense I/O configurations without consuming valuable control cabinet space. -
Reliable NPN Output Performance
Sinking transistor outputs provide consistent control in environments that require current sinking. -
Robust Diagnostic Capability
Individual output LEDs and integrated protection simplify troubleshooting and enhance uptime. -
Modular Expansion
Easily integrates into existing Modicon TM2 setups, making system expansion cost-effective. -
Industrial Compliance
Certified for CE, UL, and IEC standards, making it suitable for global deployments. -
No External Power Supply Needed
Simplifies installation by drawing power directly from the controller bus.
Frequently Asked Questions (FAQ)
1. What type of output logic does the TM2DDO8TT use?
The TM2DDO8TT uses sinking transistor logic, also known as NPN output configuration.
2. Is this module compatible with all Modicon PLCs?
It is designed to be fully compatible with Modicon M221, M241, and M251 logic controllers.
3. How many outputs are available on the TM2DDO8TT?
This module provides a total of 8 discrete digital outputs.
4. What is the maximum current that each output channel can handle?
Each output channel can support up to 0.5 A, with a total current limit of 4 A for the entire module.
5. Does the module include short-circuit protection?
Yes, the TM2DDO8TT includes built-in protection against short circuits and overloads to ensure system reliability.
6. What is the connection interface used for wiring the outputs?
The module uses a 10-pin removable HE10 connector for quick and organized wiring.
7. Can the TM2DDO8TT be used in high-speed switching applications?
Yes, it offers fast switching performance with response times typically less than 0.2 milliseconds.
8. Is an external power supply required for the module?
No, it receives power directly from the controller’s backplane, which simplifies panel wiring.
9. Are status indicators available on the module?
Each output has its own LED indicator for easy diagnostics and monitoring of output states.
10. What type of mounting does the module support?
The module is DIN rail mountable and fits into standard 35 mm rails used in most control panels.
Related Models in the Same Series
| Model Number | Description | I/O Type | Logic Type | Channels |
|---|---|---|---|---|
| TM2DDO8TK | 8-Channel Discrete Output Module | Transistor Output | Sourcing (PNP) | 8 |
| TM2DDO16TK | 16-Channel Discrete Output Module | Transistor Output | Sourcing (PNP) | 16 |
| TM2DDO32TK | 32-Channel Discrete Output Module | Transistor Output | Sourcing (PNP) | 32 |
| TM2DRA8RT | 8-Channel Relay Output Module | Relay Output | – | 8 |
| TM2DI8T | 8-Channel Discrete Input Module | Digital Input | Sink/Source | 8 |
| TM2DDI8DTK | 8-Channel Discrete Input Module | Digital Input | Sink (NPN) | 8 |
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