Schneider TM3DI32K Modicon TM3 32-Point Discrete Input Module

Product Overview

The Schneider Electric TM3DI32K discrete input module is a key component of the Modicon TM3 family, designed for seamless integration with Modicon M221, M241, M251, and M262 controllers. This module provides 32 digital inputs conforming to IEC 61131-2 Type 1, supporting both sink and source (positive/negative) logic configurations. With a compact 33.5 mm width and IP20 protection, the TM3DI32K is ideal for space-constrained control panels in manufacturing, packaging, and material handling applications.

Technical Specifications

The TM3DI32K operates at a 24 V DC input voltage with a per-channel current of 5 mA. It guarantees a logic 1 state between 15 and 28.8 V (≥2.5 mA) and a logic 0 state from 0 to 5 V (≤1 mA). Input impedance is 4.4 kOhm, and response time is 4 ms for both turn-on and turn-off. The module consumes 65 mA at 5 V DC via the bus connector when on, and 5 mA at 5 V DC when off. It uses an HE10 connector for input wiring and provides one green LED per channel for status indication. Isolation between input and internal logic is rated at 500 V AC, while inputs are non-isolated from each other.

Industry Applications

In automated assembly lines, the TM3DI32K reliably captures sensor signals from proximity switches, limit switches, and pushbuttons. Its 32-point density reduces the number of modules needed, saving panel space and wiring costs. For packaging machinery, the fast 4 ms response time ensures accurate detection of high-speed events. The module's wide operating temperature range (-10 to 55 °C horizontal, -10 to 35 °C vertical) suits both indoor and light industrial environments.

Installation & Setup Guidance

Mount the TM3DI32K on a TH35-15 or TH35-7.5 DIN rail per IEC 60715, or on a panel using a fixing kit. Use shielded cable for runs over 30 meters to maintain signal integrity. Connect the HE10 ribbon cable to the input terminals, ensuring proper polarity for sink or source configuration. The module automatically draws power from the bus connector, requiring no external supply. Always verify input voltage within 24 V DC nominal range before powering up.

Maintenance & Reliability

The TM3DI32K offers high reliability with a pollution degree 2 rating and immunity to electrostatic discharge up to 8 kV in air. For long-term performance, inspect the HE10 connector periodically for corrosion or loose connections. The module withstands vibration up to 3.5 mm at 5-8.4 Hz and shock up to 15 gn for 11 ms. Environmental ratings include -25 to 70 °C storage temperature and 10-95% non-condensing humidity. These features minimize downtime in continuous operation applications.

Compatibility & Integration

The TM3DI32K is fully compatible with Modicon M221, M241, M251, and M262 programmable logic controllers. It integrates via the TM3 bus connector, supporting up to 32 discrete inputs per module. The module carries CE, CULus, UKCA, RCM, and EAC certifications, ensuring compliance with global standards. For marine applications, it meets LR, ABS, DNV, and GL specifications. No additional configuration software is required beyond the standard controller programming environment.

Selection Guide & Purchasing Advice

When selecting the TM3DI32K, verify that your controller supports Modicon TM3 expansion modules. Consider the total number of inputs needed and the cable distance to sensors—unshielded cable up to 30 m is acceptable. For environments with high electromagnetic interference, use shielded cables and maintain proper grounding. BluePLC Industrial stocks the TM3DI32K and can advise on compatible accessories like the HE10 connector cable and DIN-rail mounting kits. Contact our team to confirm availability and lead times for your project.