Schneider Electric's Modicon TM3DI8 TM3 series I/O module

Schneider Electric's Modicon TM3DI8 is a digital input module in the Modicon TM3 series, designed for industrial automation applications. Here's a detailed breakdown:

Product Overview

Model: TM3DI8

Function: 8-channel digital input module with sink/source (PNP/NPN) compatibility.

Compatibility: Works with Modicon M221, M241, M251, and M262 PLCs.

Typical Use: Reads binary signals from sensors (e.g., proximity switches, limit switches, or pushbuttons) in industrial environments.

Technical Specifications

Electrical Characteristics

Supply Voltage: 19.2–30 V DC (nominal 24 V DC).

Input Type: Sink or source (configurable per channel).

Input Current: ~7 mA per channel at 24 V DC.

Input Impedance: ~3.4 kΩ.

Logic Thresholds:

ON: ≥15 V DC

OFF: ≤5 V DC

Response Time: ≤4 ms (typical).

Physical Characteristics

Dimensions: 90 mm (H) × 23.6 mm (W) × 70 mm (D).

Weight: ~100 g.

Mounting: DIN rail (TH35-15 or TH35-7.5) or panel mounting.

Terminals: Screw terminals for easy wiring.