Schneider Electric TM2ALM3LT Analog Input Output Module

The Schneider Electric TM2ALM3LT analog I/O expansion module provides two analog inputs and one analog output for Modicon M238 PLC systems, enabling mixed sensing and control in a single module. Inputs accept thermocouples or temperature probes, supporting J, K, and T thermocouples and Pt100 3-wire sensors, with an input resolution up to 14-bit depending on sensor type. Outputs are 0–10 V or 4–20 mA with a 12-bit resolution; it operates from 24 V DC (19.2–30 V DC), with approximately 20 ms conversion time plus controller scan time and up to 60 ms per channel sampling. Electrical isolation is provided by photocouplers between channels and logic; mounting on DIN rail or panel, dimensions ~90 × 23.5 × 70 mm, weight ~0.085 kg. It belongs to the Modicon M238 Expansion I/O series and common replacements include BMXAMO0210; typical applications include manufacturing machinery, temperature monitoring systems, HVAC automation, process control equipment, packaging lines, and water treatment facilities where PLCs monitor temperature signals and control analog devices such as valves, drives, or regulators.