Product Overview
When precise analog signal acquisition is critical for process control, the Schneider TM2AMI2HT delivers reliable performance. This I/O expansion module is designed for the Modicon M238 logic controller, providing two non-differential high-level inputs for voltage (0-10 V) or current (4-20 mA). The TM2AMI2HT ensures accurate data capture with 12-bit resolution and a cross talk of ≤2 LSB, minimizing interference between channels.
Technical Specifications
| Parameter |
Value |
| Analogue input number |
2 |
| Input level |
High level |
| Analogue input type |
Current 4…20 mA non differential; Voltage 0…10 V non differential |
| Resolution |
12 bits |
| LSB value |
2.5 mV (voltage); 4.8 µA (current) |
| Input impedance |
≥1 MOhm (voltage); 10 Ohm (current) |
| Sampling duration |
10 ms |
| Measurement error |
±0.2% of full scale at 25°C |
| Temperature coefficient |
±0.006% FS/°C |
| Insulation |
Photocoupler between channel and internal logic |
| Supply voltage |
24 V DC (20.4…28.8 V) |
| Current consumption |
50 mA at 5 V DC internal; 40 mA at 24 V DC external |
| Electrical connection |
1 removable screw terminal block |
| Dimensions (W x H x D) |
23.5 mm x 90 mm x 70 mm |
| Weight |
0.085 kg |
Real-World Applications
The TM2AMI2HT excels in applications requiring high-level analog input acquisition. For example, in a water treatment facility, the module can monitor flow transmitter signals (4-20 mA) with high accuracy. Its 12-bit resolution and low cross talk ensure that each channel maintains signal integrity, reducing noise-related downtime. In temperature monitoring loops using 0-10 V sensors, the ±0.2% measurement error guarantees consistent process control. The Schneider TM2AMI2HT also proves valuable in packaging machinery where precise position sensing via analog feedback is necessary.
Compatibility & Integration
This I/O expansion module integrates seamlessly with the Modicon M238 logic controller family. It is also compatible with the Twido and Advantys OTB ranges, offering flexibility in system design. The module operates with an external 24 V DC supply and uses a removable screw terminal block for easy wiring. For reliable communication, use shielded cable as specified.
Selection Guide & Purchasing Advice
Before purchasing the Schneider TM2AMI2HT, verify that your controller supports expansion modules and that the power supply meets the 20.4…28.8 V DC range. Confirm the input type (voltage or current) matches your sensor output. We recommend using shielded cables to minimize electromagnetic interference. For bulk orders or technical assistance, UBEST Automation (ubest101) provides genuine parts with fast delivery.