Schneider TM3DI16 | Modicon TM3 – 16 inputs (screw) 24Vdc

1. Technical Specifications TM3DI16

• Product Reference: TM3DI16

• Product Range: Modicon TM3

• Module Type: Digital Input Expansion Module

• Number of Inputs: 16 digital inputs

• Input Voltage: 24 VDC

• Input Type: Sink or source (configurable)

• Input Current per Channel: 3 mA (typical at 24 VDC)

• Input Impedance: Approx. 7.7 kΩ

• Logic Level Thresholds:

  • Logic 1: > 11 VDC

  • Logic 0: < 5 VDC

• Common Points: 2 groups of 8 inputs each

• Connection Type: Screw terminal blocks

• Mounting: DIN rail (for use with TM3-compatible PLCs)

• Compatible PLC Series:

  • Modicon M221

  • Modicon M241

  • Modicon M251

• Power Consumption: Approx. 30 mA at 5 VDC (via backplane)

• Isolation:

  • 500 V between channels and internal logic

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

• Weight: Approx. 110 grams

• Standards: CE, RoHS, IEC/EN 61131-2 compliant

• Protection:

  • IP20 (housing)

  • Overvoltage and reverse polarity protected

2. Key Features TM3DI16

• Provides 16 reliable digital inputs for Modicon controllers, ideal for machine automation and logic processing

• Supports both sink and source wiring configurations for flexible integration

• Compact size fits easily into small control panels

• Screw terminals provide secure and vibration-resistant connections

• Plug-and-play connectivity with TM3 bus for easy expansion of I/O capacity without programming complexity

• Built-in LED indicators for each input channel simplify troubleshooting and diagnostics

• Power supplied directly through the TM3 backplane — no external power required for the module itself

• Suitable for fast response applications due to low input delay

• Compatible with EcoStruxure Machine Expert (SoMachine) for programming and diagnostics

• Can be mixed with other TM3 modules (analog, relay, transistor output, etc.) in a single configuration

3. Applications

• Ideal for industrial automation systems where multiple digital sensors or switches need to be monitored

• Used in machine control panels for discrete input devices such as limit switches, proximity sensors, and push buttons

• Applicable in material handling systems, conveyors, and automated packaging lines

• Suitable for factory floor monitoring, alarms, or signal acquisition from external devices

• Used in building automation and control systems for digital signal collection

• Helps in implementing complex PLC logic with expanded input capacity for Modicon M221/M241/M251 controllers

• Can be integrated into distributed I/O architectures using TM3 expansion bus