Schneider STBDDI3725 16-Channel Input Module

Product Introduction

The STBDDI3725 belongs to Schneider Electric's Advantys STB distributed I/O family. This basic high-density digital input module provides sixteen channels for 24V DC signals. Engineers use it to connect many sensors and switches within a compact island footprint. The module requires a network interface module to communicate on the fieldbus. Furthermore, it supports hot swapping so you can replace it without shutting down the system.

Technical Specifications

Input Characteristics

The STBDDI3725 offers sixteen discrete input channels. Each channel accepts 24V DC nominal voltage. Specifically, the high-density design saves significant panel space compared to standard modules. Moreover, sixteen inputs in one module reduce the total module count per island. As a result, the module suits applications with many discrete sensors in a small area.

Logic and Response

The module processes standard 24V DC digital input signals. Additionally, it fits applications that need many discrete points without fast timing requirements. Besides, the basic module type keeps configuration simple. Meanwhile, all channels share the same input characteristics for predictable behavior. This consistency simplifies wiring and troubleshooting across the island.

Electrical Ratings

The STBDDI3725 operates on a 24V DC supply voltage. The module communicates through the Advantys STB distributed I/O island. Therefore, it requires a network interface module to connect to the fieldbus. Furthermore, the island architecture lets you mix input and output modules on one node. This flexibility supports a wide range of automation architectures.

Isolation and Protection

The module follows standard Advantys STB isolation practices. In addition, it carries an IP20 protection rating for cabinet installation. The input circuits feature protection against common field wiring faults. As a result, the STBDDI3725 handles industrial environments more reliably than unprotected designs.

Mechanical and Environmental Parameters

Physical Dimensions

The module mounts on the standard Advantys STB base system. The net weight is approximately 0.115 kg. Additionally, the STBDDI3725 uses the same base and connector family as other STB modules. Specifically, this shared platform simplifies spares and installation across the island.

Operating Conditions

The module operates within a temperature range of -25°C to 70°C. For storage, the range extends from -40°C to 85°C. The relative humidity tolerance reaches 95% at 60°C without condensation. Moreover, the module withstands vibration at 3 gn on a 35 x 7.5 mm DIN rail. Shock resistance is rated at 30 gn for 11 ms.

Protection Rating

The STBDDI3725 carries an IP20 protection rating per IEC 61131-2 class 1. Therefore, it suits installation inside control cabinets or protected enclosures. The pollution degree is 2 according to IEC 60664-1. Furthermore, the module operates at altitudes up to 2000 meters.

Installation Guide

Required Components

You need several items to install this module. First, use a standard Advantys STB mounting base. Next, connect a power distribution module for the 24V DC supply. Finally, install a network interface module to link the island to the fieldbus. The STBPDT3100 and STBXBA1000 are common companions for STB modules.

Mounting Steps

Begin by snapping the mounting base onto a DIN rail. Next, seat the STBDDI3725 onto the base and press firmly until it locks. Then, wire your sensors to the connector terminals. After that, attach the connector to the module. Finally, verify the green RDY LED illuminates to confirm proper power-up.

Hot Swapping Procedure

The module supports hot swapping with standard NIMs. However, you must follow safety procedures. First, ensure the system permits live module replacement. Next, release the module from the base. Then, slide the replacement unit into position. Finally, verify all channel LEDs respond correctly.

Packaging List

• 1 x STBDDI3725 Digital Input Module

• Standard protective packaging

FAQ

What does the STBDDI3725 do?

It provides sixteen digital input channels for 24V DC signals in an Advantys STB island. The high-density design connects many sensors within a compact footprint.

Can I replace the STBDDI3725 while the system runs?

Yes, the module supports hot swapping with standard NIMs. However, you must follow your site's safety procedures for live equipment replacement.

What components does the STBDDI3725 need?

The STBDDI3725 requires a mounting base, a power distribution module, and a network interface module. Together they form a complete Advantys STB island node.

Why choose a high-density input module?

The sixteen-channel design saves panel space and reduces module count per island. Therefore, it lowers wiring effort and cost for applications with many discrete sensors.

How do I ship the STBDDI3725?

We ship via Fedex, UPS, and DHL. Contact us for shipping lead times and freight quotes to your location.