Product Introduction
The TM3AI2H belongs to Schneider Electric's Modicon TM3 expansion line. This analog input module brings precise signal acquisition to compact PLC systems. Engineers choose it when voltage or current signals require reliable 16-bit conversion. The unit supports ±10 Vdc, 0–10 Vdc, 0–20 mA, and 4–20 mA inputs. Each channel configures independently through software.
Technical Specifications
Specifically, the TM3AI2H delivers 16-bit resolution (15 bits plus sign). Accuracy reaches ±0.1% of full scale at 25 °C. Temperature drift stays at ±0.006% of full scale per °C. The LSB value is 0.153 mV for 0–10 V range and 0.244 µA for 4–20 mA range. Conversion takes 1 ms plus 1 ms per channel plus one controller cycle. Sampling duration is 1 ms per enabled channel. Input impedance is 1 MΩ minimum for voltage and 50 Ω maximum for current. Isolation provides 500 V AC between input and internal logic, plus 1500 V AC between input and supply. Diagnostics cover channel, module, and bus status.
Mechanical and Environmental Parameters
Furthermore, the TM3AI2H measures 90 × 23.6 × 70 mm (H×W×D). It weighs 0.115 kg. The removable screw terminal block uses 3.81 mm pitch. Operating temperature ranges from 0 to +55 °C. Storage temperature spans −25 to +70 °C. Protection rating is IP20. The module mounts on standard DIN rail (TH35-15 or TH35-7.5). A green PWR LED indicates bus power status.
Installation Guide
First, mount the TM3AI2H onto a DIN rail. Next, connect the expansion bus to the controller. Then, wire analog signals using twisted-pair shielded cable. Maximum cable length is 30 m. After wiring, configure each channel via EcoStruxure Machine Expert software. Finally, verify the PWR LED illuminates green. The module draws 40 mA at 5 V DC under full load and 25 mA at 24 V DC. Use a stable 24 Vdc supply through the TM3 bus.
Packaging List
1 × Schneider TM3AI2H Analog Input Module
1 × Removable Screw Terminal Block
1 × Product Documentation
Shipping methods: Fedex, UPS, DHL.
FAQ
Q1: How many channels does the TM3AI2H have?
The module provides 2 analog input channels. Each channel supports voltage or current signals independently.
Q2: What is the resolution of the TM3AI2H?
It offers 16-bit resolution (15 bits plus sign). This equals 65,536 data points for precise measurement.
Q3: Which PLC controllers work with the TM3AI2H?
It pairs with Modicon M221, M241, M251, and M262 controllers. These platforms accept TM3 expansion modules directly.
Q4: What signal types does the TM3AI2H support?
Voltage options include ±10 Vdc and 0–10 Vdc. Current options cover 0–20 mA and 4–20 mA.
Q5: What is the conversion time for the TM3AI2H?
Total conversion requires 1 ms plus 1 ms per channel plus one controller cycle. Sampling alone takes 1 ms per enabled channel.
