Schneider TM2DMM24DRF Mixed I/O Module 16 In 8 Out

Buy TM2DMM24DRF | Modicon M238 Relay Output Module

Product Introduction

The TM2DMM24DRF mixed I/O module expands the Modicon M238 controller family with a versatile combination of digital inputs and outputs. Schneider Electric engineered this module to provide 16 discrete input channels and 8 relay output channels in a single, space-saving unit. Therefore, it serves as an excellent solution for applications requiring both signal reading and actuator control without using multiple separate modules.

This mixed module stands out due to its flexible input configuration. The 16 inputs can be wired as either sink (positive logic) or source (negative logic), adapting to various field device requirements. Additionally, the 8 relay outputs offer robust switching capability, supporting both AC and DC loads up to 2 A per channel. This makes the TM2DMM24DRF suitable for controlling contactors, solenoids, and indicator lights.

Technical Specifications

Focusing on input performance, the TM2DMM24DRF operates within a voltage range of 20.4 V to 28.8 V DC. Each input draws 7 mA at 24 V, and the input impedance measures 3.4 kΩ. The turn-on and turn-off times are both 4 ms, ensuring responsive signal detection. Furthermore, the inputs meet Type 1 standards per IEC 61131-2, guaranteeing compatibility with standard industrial sensors.

The relay outputs provide considerable flexibility. Each channel supports a maximum current of 2 A, with a common line rating of 7 A for every four channels. The contact resistance stays below 45 mΩ. Moreover, the outputs handle both resistive and inductive loads, with electrical durability reaching 100,000 cycles for resistive loads at 2 A / 240 V AC. For DC inductive loads (L/R = 7 ms), the endurance is also 100,000 cycles at 1 A / 24 V DC. The mechanical life of the relays is an impressive 20 million operations.

Isolation is a key safety feature. The TM2DMM24DRF provides 500 V AC isolation between inputs and the internal bus, and 2300 V AC between outputs and the internal logic. Additionally, isolation between input and output channels reaches 1500 V AC, enhancing system protection.

Mechanical and Environmental Parameters

The TM2DMM24DRF features a compact design, measuring 42.9 mm in width, 70 mm in depth, and 90 mm in height. It weighs 0.14 kg, making it lightweight for panel installations. Mounting is straightforward using a 35 mm symmetrical DIN rail. The module uses a spring terminal block for electrical connections. Environmentally, this product carries Schneider's Green Premium label, confirming its sustainable design and compliance with REACH and RoHS regulations. The reference contains no SVHC above the threshold.

Installation Guidelines

Proper installation ensures reliable operation of the TM2DMM24DRF. Begin by securely mounting the module on a DIN rail. Pull out the clamp by 8.5 mm (0.33 in) before attaching wires to the spring terminal block. For wiring, use a 2.5 x 0.4 mm screwdriver to open the spring receptacle by pressing on the corresponding plate.

When connecting inputs, remember that the module supports both sink and source wiring configurations. For output wiring, note that each common line serves four channels. Most importantly, always protect relay outputs from inductive load damage using appropriate external suppression circuits. Additionally, avoid connecting relay outputs to capacitive loads, as this can cause relay contact welding. External fuses for the load (2 A) and power supply (7 A) are strongly recommended.

Packaging List

Your shipment of the TM2DMM24DRF includes these items:

• Mixed I/O module TM2DMM24DRF (1 unit)

• Spring terminal block (1 piece, attached)

• DIN rail mounting clip (pre-installed)

• Quick-start installation leaflet

Note: Cables, suppression diodes, fuses, and panel mounting hardware are sold separately.

Shipping and Logistics

All orders are dispatched through premium carriers such as FedEx, UPS, and DHL. We ensure robust packaging to protect your module during transit. Tracking information will be provided once your order ships.

Frequently Asked Questions (FAQ)

1. What controllers are compatible with the TM2DMM24DRF?
This module is designed for the Modicon M238 logic controller series. It also offers compatibility with Twido and Advantys OTB systems, providing flexibility for mixed architectures.

2. What is the difference between sink and source wiring?
Sink wiring (positive logic) connects the load between the input and the power supply positive. Source wiring (negative logic) connects the load between the input and the power supply negative. The TM2DMM24DRF supports both types.

3. What type of loads can the relay outputs drive?
The relay outputs can drive both AC and DC loads. They handle resistive loads up to 2 A, and inductive loads with appropriate external protection.

4. How fast are the input and output response times?
Input response time is 4 ms for both on and off transitions. Output relay response time is 10 ms for energizing and up to 5 ms for de-energizing.

5. What external protection does this module require?
External fuses rated at 2 A for each output load and 7 A for the power supply are strongly recommended. For inductive loads, install suppression diodes across the load terminals.