TM2AMM6HT Analog I/O Module | Modicon M238 4AI 2AO | Schneider Electric

Product Overview

TM2AMM6HT is a mixed analog I/O module from Modicon M238 series. It offers 4 inputs and 2 outputs in one compact unit. This module supports both current (4..20 mA) and voltage (0..10 V) signals. It works with Modicon M238, Advantys OTB, and Twido controllers.

Key Features

• 4 analog inputs (current/voltage, non-differential)
• 2 analog outputs (current or voltage selectable)
• 12-bit resolution for both input and output
• Photocoupler insulation between channels and logic
• External 24 V DC supply (19.2..30 V range)
• Compact size: 23.5 x 70 x 90 mm

Technical Specifications (Hierarchical)

• General
  • Brand: Schneider Electric
  • Model: TM2AMM6HT
  • Series: Modicon M238
  • Type: Analog I/O Module
• Inputs (4 channels)
  • Type: Current (4..20 mA) or Voltage (0..10 V)
  • Resolution: 12 bits
  • LSB: 2.5 mV (voltage), 4 µA (current)
  • Impedance: ≤250 MΩ (current), ≥1 MΩ (voltage)
  • Overload: 13 V (voltage), 40 mA (current)
  • Sampling: ≤16 ms per channel
  • Acquisition: 16 ms/channel + 1 controller cycle
• Outputs (2 channels)
  • Type: Current (4..20 mA) or Voltage (0..10 V)
  • Resolution: 12 bits
  • Load: ≤300 Ω (current), ≥2000 Ω (voltage)
  • Stabilization time: 20 ms
  • Conversion time: 20 ms + 1 controller cycle
• Accuracy & Performance
  • Measurement error: ±0.5% FS (25 °C)
  • Temperature coefficient: ±0.02% FS/°C
  • Repeat accuracy: ±1% FS (output), ±0.5% FS (input)
  • Non-linearity: ±0.4% FS (current), ±0.4% FS (voltage)
  • Total error: ±1.5% FS
  • Output ripple: ≤1 LSB
• Electrical & Isolation
  • Supply: 24 V DC external (19.2..30 V)
  • Current consumption: 60 mA (5 V internal), 80 mA (24 V external)
  • Dielectric strength: 1500 V (I/O to external supply), 800 V (channel to channel)
  • Insulation: Photocoupler between channels and logic
• Physical & Environment
  • Weight: 0.085 kg (0.19 lb)
  • Dimensions (W x H x D): 23.5 x 90 x 70 mm
  • Connection: Removable screw terminal block
  • Cable: Shielded cable recommended

Expert Review

“TM2AMM6HT provides reliable analog mixing for small PLC systems. The 12-bit resolution and ±0.5% accuracy handle most industrial sensors. Its photocoupler isolation ensures noise immunity. We recommend it for cost-sensitive projects needing both inputs and outputs in one module.”

Manager’s Insight

“This module reduces panel space and wiring. One unit covers 4 inputs and 2 outputs. The wide temperature coefficient (±0.02% FS/°C) suits varying factory conditions. With 12-month warranty and global certifications, it is a safe choice for OEMs.”

Applications & Compatible Devices

• Controllers: Modicon M238, Advantys OTB, Twido
• Sensors: Pressure transmitters, temperature sensors (PT100, thermocouple with transmitter), level sensors
• Actuators: Analog valves, frequency inverters, positioners
• Industries: Packaging, material handling, HVAC, water treatment

Frequently Asked Questions

• Q: Can I mix current and voltage on the same module?
  Yes. Each input and output can be configured individually for current or voltage.
• Q: What is the maximum cable length for analog signals?
  Use shielded cable up to 100 m for 4..20 mA and up to 30 m for 0..10 V to avoid noise.
• Q: How do I connect the external 24 V supply?
  Connect to the screw terminal block labelled 24 V and 0 V. Ensure polarity is correct.
• Q: Does this module support hot swapping?
  No. Power off the controller before inserting or removing the module.
• Q: What is the stabilization time for the analog output?
  20 ms. Wait this time after changing output value for stable reading.

Experience-based Q&A

• Q: My input reading fluctuates. What should I check?
  Verify the cable shielding and grounding. Also check the sensor power supply.
• Q: Can I use this module with a 12 V sensor?
  No. The inputs accept 0..10 V or 4..20 mA only. Use a signal conditioner.
• Q: How to test the analog output without a load?
  Always connect a resistive load (≥2000 Ω for voltage, ≤300 Ω for current) to avoid damage.

Selection Guide

• For M238 controllers, choose TM2AMM6HT if you need both analog inputs and outputs.
• For pure input applications, consider TM2AMI4HT (4 inputs only).
• For high-accuracy projects, this module offers ±0.5% FS error.
• For space-limited cabinets, its 23.5 mm width saves panel space.
• For global compliance, it meets CE, UL, and CSA standards.

Comparison with Similar Models

• TM2AMI4HT – 4 analog inputs only, no outputs.
• TM2AMO4HT – 4 analog outputs only.
• TM2AMM3HT – 2 inputs + 1 output (lower density).

Package Contents

• TM2AMM6HT analog I/O module (1 unit)
• Removable screw terminal block (1 piece)
• Quick start guide
• Warranty card (12 months)

Shipping & Delivery

• Dispatch: 12–24 hours after order
• Carriers: FedEx, UPS, DHL (express worldwide)
• Tracking: Provided within 24 hours

Contact Information

For inquiries, contact our sales team:

• Email: sales@powergearx.com
• WhatsApp: +86 18030005825

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