TM2DMM8DRT
Schneider Electric
Overview
The TM2DMM8DRT is a Discrete I/O module in the Modicon M238 logic controller range from Schneider Electric. It executes control logic for Modicon TM logic controller / I/O architectures and operates from a Limits 20.4 to 28.8 V supply.
Application & Technical Notes
As a discrete i/o module, the TM2DMM8DRT is intended for deployment in panel-based control cabinets and machine enclosures where Modicon TM logic controller / I/O equipment is installed. It hosts the application program, executes the control cycle and orchestrates I/O scanning, communication and diagnostics for the station.
Key published characteristics include a Limits 20.4 to 28.8 V rating, 35 mm symmetrical din rail mounting. These values should be confirmed against the current manufacturer datasheet before final selection, as options and suffixes vary by configuration.
Maintenance & Diagnostics
Back up the application program and parameter set before any firmware or hardware change; verify the memory/real-time-clock battery where fitted and replace on schedule. Monitor the module health LED and controller diagnostics; plan spares for critical stations to minimise downtime. Always de-energise the circuit and follow lock-out/tag-out before handling; refer to the official instruction bulletin for service procedures.
Sourcing & Procurement
When sourcing the TM2DMM8DRT, distinguish three supply tiers: (1) genuine Schneider Electric stock from an authorised distributor; (2) compatible equivalents or surplus/NOS (new-old-stock) from third parties; (3) alternative parts offering equivalent function. Genuine supply carries the full warranty and traceability; compatible or alternative items may be cheaper but should be validated for form, fit, firmware and certification before use in a live system. PLCXpert publishes this page as an independent reference and does not sell the part — verify every claim with the manufacturer or your distributor.
Confirm the CPU matches your Modicon TM logic controller / I/O architecture, memory size, firmware revision and any required option/communication modules. Lead times and pricing vary by region and lifecycle status; obtain a current quote from an authorised channel rather than relying on stale listings.
Frequently Asked Questions
What is the TM2DMM8DRT?
The TM2DMM8DRT is a discrete i/o module in the Modicon M238 logic controller range from Schneider Electric. It is described by the manufacturer as: Discrete I/O module.
What are the key technical ratings of the TM2DMM8DRT?
Its published highlights include Limits 20.4 to 28.8 V. Full electrical, mechanical and environmental limits are listed in the manufacturer datasheet and should be confirmed for your exact suffix.
How is the TM2DMM8DRT mounted or installed?
It uses 35 mm symmetrical DIN rail. Follow the manufacturer mounting and torque guidance and observe clearance, grounding and ventilation requirements.
Is the TM2DMM8DRT compatible with my controller?
It is part of the Modicon TM logic controller / I/O family. Confirm the specific rack, firmware revision, slot rules and configuration with the controller documentation before purchase, as compatibility depends on the exact system build.
What should I check before buying the TM2DMM8DRT?
Verify the genuine part number and suffix, confirm it matches your platform and ratings, check the current lifecycle/availability status, and buy from an authorised distributor. PLCXpert provides this reference only and does not sell the component.
Specifications
The TM2DMM8DRT from Schneider Electric is a discrete I/O module that operates with a discrete input voltage of 24 VDC. It features relay output types designed to meet various control requirements while ensuring reliable performance within specified voltage limits.
Complementary
| Range Compatibility | Twido Advantys OTB |
|---|---|
| Input voltage limits | 20.4...28.8 V Discrete input logic Sink or source |
| Discrete input current | 7 mA |
| Input impedance | 3.4 kOhm Discrete output function 1 NO |
| Current per channel | 2 A Maximum current per output common 7 A Number of common point 1 for output 1 for input Contact resistance 45 mOhm |
| Response time | <= 10 ms from state 0 to state 1 output <= 5 ms from state 1 to state 0 output 4 ms at state 0 input 4 ms at state 1 input Minimum switching current 0.1 mA 0.1 V DC |
| Isolation between channels | None Isolation between channels and internal logic 2300 V for 1 minute (output) 500 V for 1 minute (input) Isolation between input channel and output channel 1500 V for 1 minute Isolation between output channels group 1500 V for 1 minute Mechanical durability 20000000 cycles |
| Electrical durability | 100000 cycles 0.5 A AC-15 240 V AC cos phi = 0.35 inductive 100000 cycles 1 A AC-15 240 V AC cos phi = 0.7 inductive 100000 cycles 1 A DC-13 24 V DC inductive (L/R = 7 ms) 100000 cycles 2 A 240 V AC resistive 100000 cycles 2 A 30 V DC resistive |
| 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 |
| Net Weight | 0.209 lb(US) (0.095 kg) |
Environment
| Depth | 2.8 in (70 mm) |
|---|---|
| Height | 3.5 in (90 mm) |
| Width | 1.7 in (42.9 mm) |
Description
| Note | The Schneider Electric Modicon TM2DMM8DRT is an effective discrete I/O module designed for automation applications. Capable of handling a discrete input voltage of 24 VDC, it provides reliable operation within a voltage range of 20.4 to 28.8 V. The discrete input current is rated at 7 mA, and the input impedance stands at 3.4 kOhm, allowing for versatile integration in various systems. Each channel supports a current rating of up to 2 A, which is beneficial for robust control tasks. Furthermore, the module can manage a maximum common output current of 7 A, facilitating greater flexibility in output configurations. The contact resistance of the unit measures at 45 mOhm, ensuring efficient signal transmission. For minimal load operations, the module requires a minimum switching current of just 0.1 mA at an input voltage of 0.1 V DC, ensuring precise control under low-load conditions. Mounting solutions for the TM2DMM8DRT are simplified with compatibility for a 35 mm symmetrical DIN rail, promoting streamlined installation processes. Weighing an approximate 0.095 kg, the module is lightweight and manageable. Its compact dimensions of 90 mm in height, 70 mm in depth, and 42.9 mm in width allow integration within limited spaces. Electrical connection is made through a removable screw terminal block, enhancing convenience for wiring and maintenance. Additionally, the module features a display block for local signaling, providing immediate visual feedback of its operational status. |
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Reproduced from the manufacturer's published data. Values marked "Not available" are absent from the source document.