Schneider TM2AMM3HT Analog I/O Module

TM2AMM3HT Analog Module with 2 Inputs and 1 Output

Product Introduction

The Schneider Electric TM2AMM3HT brings analog capabilities to your Modicon M238 or Twido controller. You get 2 analog input channels and 1 analog output channel. The inputs accept high-level signals: 0-10V or 4-20mA. The output can generate either 0-10V or 4-20mA as well.

This module uses 12-bit resolution for both input and output. Therefore, you get precise measurement and control. Typical applications include reading temperature sensors, pressure transmitters, or controlling analog actuators like variable speed drives.

The TM2AMM3HT includes photocoupler isolation between channels and internal logic. This protects your controller from electrical noise. Additionally, a shielded cable is required for best signal quality. Power comes from an external 24V DC supply.

Technical Specifications

Analog Input Specifications

Number of Inputs: 2
Input Level: High level
Input Type (Voltage): 0-10V, non-differential
Input Type (Current): 4-20mA, non-differential
Resolution: 12 bits
LSB Value: 2.5mV (voltage), 4.8µA (current)
Input Impedance: ≥1 MOhm (voltage), ≥10 Ohm (current)
Permissible Overload: 13V (voltage), 40mA (current)
Conversion Time: 20ms + 1 controller cycle
Acquisition Period: 60ms per channel + 1 controller cycle
Sampling Duration: ≤10ms
Stabilization Time: 20ms

Analog Output Specifications

Number of Outputs: 1
Output Type (Voltage): 0-10V
Output Type (Current): 4-20mA
Resolution: 12 bits
Load Impedance: ≥2000 Ohm (voltage), ≤300 Ohm (current)
Load Type: Resistive
Output Error: ±1% of full scale
Output Ripple: ≤1 LSB
Stabilization Time: 20ms

Accuracy & Performance

Electrical & Power Data

Rated Supply Voltage: 24V DC
Supply Voltage Limits: 19.2V to 30V DC
Current Consumption (internal): 50mA at 5V DC
Current Consumption (external): 50mA at 24V DC
Insulation: Photocoupler between channel and internal logic
Dielectric Strength: 500V (I/O to external supply, I/O to logic, and between I/O channels)
Cable Type: Shielded cable required

Mechanical & Environmental Data

Dimensions (H x W x D): 90mm x 23.5mm x 70mm
Product Weight: 0.085 kg (0.187 lb)
Electrical Connection: 1 removable screw terminal block
Mounting Support: 35mm DIN rail
Range Compatibility: Modicon M238, Twido, Advantys OTB

Packaging List

• 1 x Schneider Electric TM2AMM3HT analog I/O module

• 1 x Removable screw terminal block

• 1 x Quick start guide

Note: No certificates or warranty documents are included. Shielded cable is not included and must be purchased separately.

Shipping

We ship worldwide via Fedex, UPS, or DHL. All packages include tracking and insurance.

Frequently Asked Questions (FAQ)

1. Which controllers are compatible with the TM2AMM3HT?
The TM2AMM3HT works with Modicon M238 logic controllers, Twido series, and Advantys OTB systems. It connects via the standard expansion ribbon cable.

2. Can I use one input for voltage and the other for current simultaneously?
Yes, you can. Each input channel on the TM2AMM3HT is independently configurable. Set channel 0 to voltage (0-10V) and channel 1 to current (4-20mA) in your software. Both will work correctly at the same time.

3. Why do I need an external 24V DC supply for the TM2AMM3HT?
The TM2AMM3HT uses an external supply to power its analog circuits. This isolates the analog signals from the controller's internal logic. It also provides cleaner power for high-accuracy measurements. Connect a stable 24V DC supply (19.2-30V) to the dedicated terminals.

4. What is the total conversion time for both inputs?
Each input takes 60ms acquisition time plus one controller cycle. For two inputs, the total update time is approximately 120ms plus the cycle time. Additionally, there is a 20ms stabilization time. For fast-changing signals, keep the controller cycle time short.

5. How do I reduce electrical noise on the analog signals?
First, use shielded cable for all analog wiring. Connect the shield to ground at the TM2AMM3HT end only. Second, keep analog wires away from power cables and motor drives. Third, use a clean 24V DC supply. Finally, avoid running analog signals in the same conduit as AC power.