Schneider TM3DM24R Technical Overview
The Schneider TM3DM24R discrete I/O module from the Modicon TM3 family delivers 24 I/O points with 16 digital inputs and 8 relay outputs. Engineers working with Modicon M221, M241, or M251 controllers benefit from this reliable expansion solution for industrial automation systems.
Input Specifications
The module provides 16 discrete inputs conforming to IEC 61131-2 Type 1. Each input operates at 24 V DC with a current of 7 mA. The input logic supports both sink and source configurations, offering versatility for various wiring schemes. Voltage state 1 ranges from 15 to 28.8 V, while state 0 ranges from 0 to 5 V. The typical response time reaches 4 ms for both turn-on and turn-off, ensuring quick signal processing.
Output Specifications
On the output side, the TM3DM24R features 8 normally open relay outputs. These relays handle up to 2 A at 24 V DC or 240 V AC. The minimum load requirement is 10 mA at 5 V DC. Each output common carries up to 7 A. The relay outputs offer a mechanical durability of 20 million cycles, providing long-lasting performance in high-cycle applications.
Power and Communication
The module draws 5 mA at 5 V DC from the bus connector when off, and 65 mA when on. At 24 V DC, the current consumption is 0 mA both on and off via the bus connector. This low power consumption makes it efficient for integration into larger systems.
The module offers insulation at 500 V AC between output and internal logic, and 1500 V AC between input and output groups. The module carries CE marking and certifications to C-Tick and cULus standards.
Environmental and Mechanical Data
The TM3DM24R operates in temperatures from -10 to 55 °C for horizontal installation, and -10 to 35 °C for vertical. It achieves an IP20 protection degree with the protective cover in place. Vibration resistance reaches up to 3.5 mm at 5-8.4 Hz and 3 gn at 8.4-150 Hz. Shock resistance is 15 gn for 11 ms.
Removable screw terminal blocks provide the connection: a 17-terminal block for inputs (3.81 mm pitch) and an 11-terminal block for outputs. Unshielded cable length can extend up to 30 m for regular inputs.
Applications and Compatibility
This module suits applications requiring mixed I/O with relay outputs. It fits seamlessly into Modicon M221, M241, and M251 automation platforms. The relay outputs excel at switching inductive loads or high-voltage signals. The 16 inputs provide flexibility for sensor and switch interfacing.
For procurement professionals, the TM3DM24R offers a compact footprint of 42.9 mm width, 90 mm height, and 84.6 mm depth. Mounting options include DIN rail (TH35-15 or TH35-7.5) or panel with fixing kit.
In summary, the Schneider TM3DM24R combines 16 digital inputs and 8 relay outputs in a compact design. Its compatibility with key Modicon controllers and solid electrical specifications make it a strong choice for expanding industrial control systems.