Schneider TM3DM24R 24-Channel I/O Relay Module

Modicon TM3DM24R 24-Channel Mixed I/O Module

Product Introduction

The TM3DM24R from Schneider Electric is a highly flexible discrete I/O module that combines both inputs and outputs in a single compact unit. This module features 16 digital inputs and 8 relay outputs, providing 24 I/O points total. The inputs accept 24 V DC signals with sink or source logic, while the relay outputs handle both AC and DC loads up to 2 A per channel. Consequently, the TM3DM24R serves as an excellent solution for applications requiring mixed signal types. Its compatibility with Modicon M221, M241, and M251 controllers makes it a versatile choice for various automation projects.

Technical Specifications of the TM3DM24R

Input Characteristics: The TM3DM24R provides 16 digital inputs conforming to IEC 61131-2 Type 1 standards. These inputs operate at 24 V DC with a current draw of 7 mA per channel. The input impedance measures 3.4 kOhm, ensuring reliable signal detection. State 1 voltage ranges from 15 to 28.8 V DC with a minimum current of 2.5 mA, while state 0 voltage falls between 0 and 5 V with a maximum current of 1 mA. Furthermore, the inputs support both sink and source configurations, offering wiring flexibility for different field devices.

Output Characteristics: This module includes 8 normally open relay outputs. Each relay supports voltages up to 240 V AC or 24 V DC, with a maximum current of 2000 mA per channel. The current per output common reaches 7 A, providing ample capacity for multiple loads. Minimum load requirement is 10 mA at 5 V DC, ensuring reliable contact operation. Mechanical durability is rated at 20,000,000 cycles, guaranteeing long-term performance in high-frequency applications.

Response Times: Both inputs and outputs deliver consistent performance with 4 ms response times for turn-on and turn-off operations. This balanced speed makes the TM3DM24R suitable for general-purpose control tasks requiring moderate switching frequencies.

Power Consumption: The module draws 5 mA at 5 V DC via the bus connector when outputs are off, and 65 mA at 5 V DC when outputs are on. Consumption at 24 V DC remains 0 mA regardless of output state, contributing to overall system energy efficiency.

Insulation and Isolation

The TM3DM24R provides comprehensive isolation between different sections:

• 500 V AC between output and internal logic

• 500 V AC between input and internal logic

• 1500 V AC between input groups and output groups

• 750 V AC between open contacts

• No insulation between inputs

• No insulation between outputs

Mechanical and Environmental Data

Physical Dimensions: The module measures 90 mm in height, 84.6 mm in depth, and 42.9 mm in width. Net weight is 0.12 kg, while packaged weight reaches 0.220 kg. Its compact form factor allows efficient use of panel space.

Mounting Options: The TM3DM24R installs on top hat type TH35-15 or TH35-7.5 rails conforming to IEC 60715. Panel mounting with a fixing kit provides additional installation flexibility. The IP20 protection rating with protective cover ensures safe operation in typical industrial environments.

Environmental Resilience: Operating temperature ranges from -10 to 55°C for horizontal installation and -10 to 35°C for vertical mounting. Storage temperature spans -25 to 70°C. Relative humidity tolerance is 10 to 95% without condensation both in operation and storage. Operating altitude reaches 2000 m, with storage altitude up to 3000 m. Vibration resistance includes 3.5 mm at 5 to 8.4 Hz and 3 gn at 8.4 to 150 Hz for both DIN rail and panel mounting. Shock resistance is rated at 15 gn for 11 ms.

Certifications: The TM3DM24R holds cULus and C-Tick certifications. It complies with EN/IEC 61010-2-201 and EN/IEC 61131-2 standards. Additionally, it meets marine specifications from LR, ABS, DNV, and GL.

Status LED Indicators

The module provides green LEDs for I/O state indication, allowing quick visual verification of channel status.

Installation Guidelines for the TM3DM24R

Proper installation ensures the TM3DM24R delivers reliable performance throughout its operational life. Begin by disconnecting all power sources before handling the module. Mount the unit securely on the chosen DIN rail or panel using appropriate hardware.

Wiring Instructions: The module features two removable screw terminal blocks with 3.81 mm pitch. The input terminal block accommodates 17 terminals with 1.5 mm² connection capacity. The output terminal block accommodates 11 terminals with 1.5 mm² connection capacity. For unshielded cable installations, maintain distances under 30 meters to ensure signal integrity. The removable design facilitates convenient wiring and maintenance procedures.

Important Considerations:

• Observe temperature derating for vertical installation

• Maintain adequate clearance around the module for ventilation

• Ensure proper polarity for sink or source input configurations

• Consider relay contact ratings for AC versus DC loads

• Verify compatibility with your specific Modicon controller model

Packaging and Shipping Details

The Schneider TM3DM24R is carefully packaged to prevent damage during transit.

Package Contents:

1. Modicon TM3 Discrete I/O Module (TM3DM24R)

2. Removable screw terminal blocks (input and output)

3. Protective packaging materials

Shipping Logistics: All orders ship promptly via premium courier services. We exclusively partner with Fedex, UPS, and DHL to ensure your module arrives safely and within expected delivery windows.

Frequently Asked Questions (FAQ)

1. Which controllers are compatible with the TM3DM24R?
The TM3DM24R works with Modicon M221, M241, and M251 logic controllers.

2. Can the relay outputs switch AC and DC loads?
Yes, the relay outputs support both 24V DC and 240V AC loads up to 2A per channel.

3. What is the maximum cable length for inputs?
For unshielded cable, the maximum recommended distance is 30 meters for regular inputs.

4. Does the TM3DM24R provide isolation between inputs and outputs?
Yes, isolation between input groups and output groups is rated at 1500V AC.

5. What is the mechanical durability of the relay outputs?
The relays offer 20,000,000 mechanical cycles for long-term reliability.