TM2ALM3LT
Schneider Electric
Overview
The TM2ALM3LT is an Input/Output analog 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 19.2...30 V supply.
Application & Technical Notes
As an input/output analog module, the TM2ALM3LT 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 19.2...30 V rating. 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 TM2ALM3LT, 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 TM2ALM3LT?
The TM2ALM3LT is an input/output analog module in the Modicon M238 logic controller range from Schneider Electric. It is described by the manufacturer as: Input/Output analog module.
What are the key technical ratings of the TM2ALM3LT?
Its published highlights include limits 19.2...30 V. Full electrical, mechanical and environmental limits are listed in the manufacturer datasheet and should be confirmed for your exact suffix.
How is the TM2ALM3LT mounted or installed?
Installation follows the standard Modicon TM logic controller / I/O mounting practice for this device class; refer to the installation manual for exact dimensions and torque.
Is the TM2ALM3LT 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 TM2ALM3LT?
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
Schneider Electric TM2ALM3LT
Main
| Range of product Modicon M238 logic controller | Product or component type Input/Output analog module Analogue input number 2 Input level Low level Analogue input type Temperature probe - 100...500 °C 3-wire Pt probe differential Thermocouple 0...1200 °C thermocouple J differential Thermocouple 0...1300 °C thermocouple K differential Thermocouple 0...400 °C thermocouple T differential Analogue output number 1 Analogue output type Current 4...20 mA Voltage 0...10 V Cross talk <= 2 LSB |
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Complementary
| Range compatibility Advantys OTB | Twido Analogue input resolution 12 bits Analogue output resolution 12 bits LSB value 0.1 °C thermocouple 0.15 °C temperature probe 2.5 mV voltage voltage 4.8 µA current current Input impedance >= 1 MOhm Load type Resistive Load impedance ohmic <= 300 Ohm current >= 2000 Ohm voltage Stabilisation time 20 ms Conversion time 20 ms + 1 controller cycle time Sampling duration <= 20 ms temperature probe <= 60 ms thermocouple Acquisition period 60 ms per channel + 1 controller cycle time thermocouple 80 ms per channel + 1 controller cycle time Measurement error +/- 0.2 % of full scale - 100...500 °C 3-wire Pt probe 25 °C 0.2 % of full scale +/- 4 °C 0...1200 °C thermocouple J 25 °C 0.2 % of full scale +/- 4 °C 0...1300 °C thermocouple K 25 °C 0.2 % of full scale +/- 4 °C 0...400 °C thermocouple T 25 °C +/- 0.2 % of full scale 0...10 V 0...10 V 25 °C +/- 0.2 % of full scale 4...20 mA 4...20 mA 25 °C Temperature coefficient +/-0.006 %FS/°C - 100...500 °C 3-wire Pt probe +/-0.006 %FS/°C 0...1200 °C thermocouple J +/-0.006 %FS/°C 0...1300 °C thermocouple K +/-0.006 %FS/°C 0...400 °C thermocouple T +/-0.015 %FS/°C 0...10 V 0...10 V +/-0.015 %FS/°C 4...20 mA 4...20 mA Repeat accuracy +/-0.5 %FS input/output Non-linearity +/- 0.2 %FS temperature probe +/- 0.2 %FS thermocouple +/- 0.2 %FS current current +/- 0.2 %FS voltage voltage Output error +/- 1 %FS Output ripple <= 1 LSB Total error +/-1 %FS temperature probe +/-1 %FS thermocouple +/-1 %FS current current +/-1 %FS voltage voltage Type of cable Shielded cable Insulation between channel and internal logic Photocoupler Supply External supply [Us] rated supply voltage 24 V DC Supply voltage limits 19.2...30 V Electrical connection 1 removable screw terminal block Current consumption 50 mA 24 V DC external 50 mA 5 V DC internal Product weight 0.085 kg |
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Environment
| Note | Dielectric strength 500 V between I/O channel 500 V between the I/O and internal logic 500 V between the I/O and the external supply circuit Width 23.5 mm Depth 70 mm |
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| Height 90 mm | N/A |
Reproduced from the manufacturer's published data. Values marked "Not available" are absent from the source document.