PLCs, Power Supplies & Others

Precision measurement applications need high-resolution analog inputs. The Schneider TM2AMI8HT delivers accurate signal conversion for field sensors. This module functions as an analog input card for Modicon M221 PLCs. Schneider Electric designed this unit for temperature and voltage monitoring tasks.

Technical Specifications & Dimensions

This module accepts multiple analog signal types with high accuracy. The table below outlines its core technical parameters.

Construction and Interface Layout

This module features a compact plastic housing with removable terminal blocks. Such a design simplifies wiring replacement and module swapping. Furthermore, the Schneider TM2AMI8HT provides two 4-pin removable connectors on the front. You will find 8 analog input channels across these two blocks. Each terminal accepts wire sizes from 0.2 to 1.5 mm². A green LED indicates the presence of module power.

Energy Storage and Signal Conditioning

Unlike basic input cards, this analog module includes a 16-bit Sigma-Delta converter. The board uses small filtering capacitors for noise rejection on each channel. Consequently, the Schneider TM2AMI8HT provides stable readings in electrically noisy environments. An internal cold junction compensates for thermocouple measurements automatically. This compensation uses a precision temperature sensor on the terminal block. The module does not require any batteries for configuration storage.

Installation and Mounting Requirements

Installing the Schneider TM2AMI8HT takes only a few minutes of work. The unit snaps directly onto a DIN rail alongside other TM2 modules. It also locks securely with a bottom-mounted retaining clip. Always disconnect 24V power before wiring or removing this module. The unit uses passive cooling through natural convection. This design eliminates fan noise and moving parts. The module occupies a very compact footprint in the cabinet.

Integration with Modicon M221 PLCs

This analog input works perfectly with Schneider Modicon M221 controllers. It reads temperatures from thermocouples or signals from transmitters. Operators can scale the raw values directly in the PLC software. The Schneider TM2AMI8HT also supports multiple range selections per channel. Consequently, this module remains an excellent choice for compact analog monitoring. The unit delivers consistent performance across a 0°C to 55°C temperature range.

Details