Schneider TM2DMM8DRT Discrete I/O Module, 4x 24VDC Inputs (Sink/Source), 4x Relay Outputs (NO), Removable Screw Terminal, for Modicon M238 Logic Controllers

Schneider TM2DMM8DRT Discrete Input/Output Module

Product Overview: The Schneider TM2DMM8DRT is a versatile discrete input/output (I/O) expansion module designed to simultaneously expand both the digital input and relay output capabilities of Modicon M238 logic controllers. This compact module features 4 digital inputs, operating at 24V DC with configurable sink or source logic, alongside 4 independent relay outputs (normally open contacts), suitable for controlling various AC or DC loads. Equipped with a convenient removable screw terminal block, robust isolation, and integrated common points for both inputs and outputs, the TM2DMM8DRT offers a flexible, reliable, and space-efficient solution for diverse industrial automation applications requiring mixed signal handling. It is also compatible with Twido and Advantys OTB ranges.

Key Features:

• Integrated I/O: Provides 4 digital inputs (24VDC, Sink/Source) and 4 relay outputs (NO contacts) in a single module, optimizing panel space.
• Versatile Relay Outputs: 4 Normally Open (NO) relay contacts capable of switching up to 2A per channel, suitable for a wide range of AC and DC loads.
• Removable Screw Terminal: Ensures flexible, secure, and user-friendly wiring connections, simplifying installation and maintenance.
• Robust Isolation: Features high dielectric strength: 2300V for output, 500V for input, 1500V between I/O channels, and 1500V between output groups for enhanced electrical safety.
• High Durability: Offers excellent mechanical (20,000,000 cycles) and electrical (100,000 cycles at rated loads) durability for long-term reliability.
• Fast Response Times: Delivers quick input response (4 ms) and efficient output switching (<= 10 ms turn-on, <= 5 ms turn-off).
• Compact & DIN Rail Mountable: Space-saving design optimized for efficient panel integration on a standard 35 mm symmetrical DIN rail.
• Broad Compatibility: Primarily designed for Modicon M238 logic controllers, also compatible with Twido and Advantys OTB series.

Technical Specifications:

• Manufacturer: Schneider Electric
• Part Number: TM2DMM8DRT
• Product Series: Modicon M238 Expansion Modules
• Product or Component Type: Discrete I/O Module
• Discrete Input Number: 4 channels
• Discrete Input Voltage: 24 VDC
• Discrete Input Voltage Type: DC
• Discrete Input Logic: Sink or Source
• Discrete Input Current: 7 mA
• Input Impedance: 3.4 kOhm
• Input Voltage Limits: 20.4...28.8 V
• Discrete Output Number: 4 channels
• Discrete Output Type: Relay
• Discrete Output Function: 1 NO (Normally Open)
• Current per Output Channel: 2 A
• Maximum Current per Output Common: 7 A
• Contact Resistance: 45 mOhm
• Minimum Switching Current: 0.1 mA at 0.1 V DC
• Response Time:
  • Output: <= 10 ms (from state 0 to state 1), <= 5 ms (from state 1 to state 0)
  • Input: 4 ms (at state 0), 4 ms (at state 1)
• Isolation:
  • Between channels: None
  • Between channels and internal logic: 2300 V for 1 minute (output), 500 V for 1 minute (input)
  • Between input channel and output channel: 1500 V for 1 minute
  • Between output channels group: 1500 V for 1 minute
• Mechanical Durability: 20,000,000 cycles
• Electrical Durability:
  • 100,000 cycles @ 0.5 A, AC-15, 240 V AC (cos phi = 0.35 inductive)
  • 100,000 cycles @ 1 A, AC-15, 240 V AC (cos phi = 0.7 inductive)
  • 100,000 cycles @ 1 A, DC-13, 24 V DC (inductive L/R = 7 ms)
  • 100,000 cycles @ 2 A, 240 V AC (resistive)
  • 100,000 cycles @ 2 A, 30 V DC (resistive)
• Number of Common Points: 1 for output, 1 for input
• Current Consumption:
  • 20 mA (24 V DC at state 1 for all input/output)
  • 25 mA (5 V DC at state 1 for all input/output)
• Local Signalling: 1 display block
• Electrical Connection: 1 removable screw terminal block
• Mounting Support: 35 mm symmetrical DIN rail
• Dimensions (WxDxH): 42.9 mm x 70 mm x 90 mm (1.7 in x 2.8 in x 3.5 in)
• Net Weight: 0.095 kg (0.209 lb US)
• Range Compatibility: Twido, Advantys OTB

Applications:

The Schneider TM2DMM8DRT discrete I/O module is perfectly suited for a wide range of industrial control and automation applications that require a balanced mix of digital input sensing and relay-based output control, including:

• Compact Machine Control: Ideal for small to medium-sized machines where both sensor inputs and versatile relay outputs are needed in a single, space-efficient module.
• General Purpose I/O Expansion: Extending the digital capabilities of Modicon M238 PLCs in environments with diverse sensing and actuation requirements.
• Motor & Solenoid Control: Driving small motors, solenoids, contactors, and pneumatic/hydraulic valves directly via relay contacts.
• Indicator & Alarm Systems: Activating lamps, buzzers, and other signaling devices based on digital inputs or internal PLC logic.
• Interfacing with Diverse Loads: Its relay outputs provide flexibility for controlling both AC and DC loads that may have different voltage requirements from the PLC's internal logic.
• Safety Interlocks: Implementing basic safety interlock circuits where robust relay isolation is beneficial.

Manufacturer Information:

Schneider Electric is a global specialist in energy management and automation, driving digital transformation by integrating world-leading process and energy technologies. With solutions designed for homes, buildings, data centers, infrastructure, and industries, Schneider Electric is committed to making energy safe, reliable, efficient, sustainable, and connected. The Modicon range of PLCs, including the M238 series and its associated I/O modules, are trusted worldwide for their robust performance, flexibility, and innovative features, enabling enhanced automation and operational excellence across diverse industrial sectors.