Introduction
The Schneider TM2AMI2HT Analog Input Module is a compact, precision analog expansion unit designed to integrate seamlessly with Modicon TM2 and related controller families. It expands digital logic controllers with two high-level analog inputs capable of reading voltage and current signals from a variety of industrial sensors. This module is ideal for applications where accurate real-world analog data must be captured and processed — such as sensing temperature, pressure, flow, or level — enhancing control, monitoring, and automation performance.
Carefully engineered for industrial environments, the TM2AMI2HT combines rugged hardware with high-resolution conversion and stable measurement characteristics to support reliable process control and data acquisition tasks.
Technical Specifications
| Specification | Details |
|---|
| Model Number | TM2AMI2HT |
| Module Type | Analog Input Expansion Module |
| Compatible Series | Modicon TM2 I/O family |
| Analog Inputs | 2 channels |
| Input Signal Types | 0–10 V DC, 4–20 mA non-differential |
| Input Resolution | 12-bit (4096 increments) |
| Input Impedance | ≥ 1 MΩ (voltage), 10 Ω (current) |
| Sampling Time | ≤ 10 ms per channel |
| Cross-Talk | ≤ 2 LSB |
| Supply Voltage | 24 V DC (20.4–28.8 V) |
| Current Draw | ~50 mA @ 5 V DC internal / ~40 mA @ 24 V DC external |
| Connection Type | Removable screw terminal block |
| Mounting | DIN-rail or symmetrical rail mount |
| Dimensions (approx.) | 90 mm × 23.5 mm × 70 mm |
| Weight | ~85 g |
| Operating Temp. | Industrial range |
| Certifications | IEC-compliant analog acquisition |
Applications
The TM2AMI2HT is used in automation systems that require precise analog signal acquisition, especially where real‑world measurements need to be integrated into logic control and HMI/SCADA systems:
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Acquisition of sensor signals (pressure, flow, temperature, level)
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Analog process variable monitoring and logging
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PID control loops in machine and plant automation
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Data acquisition for condition monitoring and diagnostics
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Integration into machine safety or quality control systems
Its compatibility with the Modicon TM2 ecosystem makes it suitable for both OEM machines and distributed industrial control systems.
Advantages
Dual-Channel Analog Input Capability
Supports two independent analog inputs capable of either voltage (0–10 V) or current (4–20 mA), enabling versatile sensor integration.
High-Resolution Measurement
12-bit resolution ensures fine signal granularity, improving accuracy for process control and monitoring.
Strong Noise Immunity
Designed with low cross-talk and robust input characteristics, resisting electrical interference common in industrial environments.
Easy Installation and Maintenance
Removable screw terminal block simplifies wiring and module replacement.
Wide Controller Compatibility
Works with the TM2 controller family and expands discrete PLC I/O with analog functionality.
Technical FAQs
1. What types of analog signals does the TM2AMI2HT support?
It supports 0–10 V voltage and 4–20 mA current inputs on each channel.
2. How many analog input channels does this module have?
The module provides two high-level analog input channels.
3. What resolution does the module offer?
It uses 12-bit resolution for precise signal conversion.
4. Is the module differential or non-differential?
Inputs are non-differential.
5. What supply voltage does it require?
A 24 V DC supply within 20.4–28.8 V DC.
6. What is the typical sampling time?
Up to 10 ms per active channel.
7. How is the module connected to sensors?
Via removable screw terminal blocks, supporting shielded analog wiring.
8. Can the module be used in harsh industrial environments?
Yes, it’s designed with robust electrical characteristics suitable for industrial use.
9. Can it be hot-swapped?
Standard Modicon TM2 safety practice applies; hot-swapping depends on controller support.
10. Does it support thermocouple or RTD inputs?
No — it is intended for voltage/current signals. For thermocouples or RTDs, select other TM2 analog modules.
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