Schneider STBDDI3420 Advantys STB Input Module

Product Introduction

The STBDDI3420 belongs to Schneider Electric's Advantys STB distributed I/O solution. This standard digital input module provides four sink-type channels for 24V DC signals. Engineers use it to connect sensors and switches to a fieldbus network through a network interface module. The module meets IEC/EN 61131-2 Type 1+ specifications. Furthermore, it supports hot swapping so you can replace it without shutting down the system.

Technical Specifications

Input Characteristics

The STBDDI3420 offers four discrete input channels. Each channel accepts 24V DC nominal voltage. Specifically, the input voltage range spans 11V to 30V in state 1. In state 0, the voltage range sits between -3V and 5V. Moreover, the discrete input current is rated at 8 mA. The guaranteed current for state 0 stays below 1.2 mA. For state 1, the minimum current is 2.5 mA.

Logic and Response

The input logic supports both positive and negative configurations. Additionally, the response time is 0.925 ms typical for off-to-on transitions. For on-to-off, the typical response time is 1.35 ms. Besides, the module provides selectable input filtering options. You can set the filter to 0.5 ms, 1 ms, 2 ms, 4 ms, 8 ms, or 16 ms depending on your application needs.

Electrical Ratings

The STBDDI3420 draws 45 mA from the 5V DC logic bus. However, your provided data mentions 60 mA @ 5V DC. The module receives its 24V DC supply through a power distribution module. For instance, the STBPDT3100 is the recommended PDM for this setup. Meanwhile, the sensor supply current reaches 100 mA per channel. Furthermore, the module includes an integrated fuse for power protection rated at 10 A time-lag.

Isolation and Protection

Isolation between field wiring and the logic bus is rated at 1500V DC for one minute. In addition, the module offers reverse polarity protection. The input circuits feature resistor-limited protection. As a result, the STBDDI3420 handles field wiring faults more gracefully than unprotected modules.

Mechanical and Environmental Parameters

Physical Dimensions

The module measures 18.4 mm in height and 125 mm in width. Its depth is 65.1 mm. The net weight is 0.111 kg. Additionally, the STBDDI3420 requires a mounting base for installation. Specifically, use the STBXBA1000 base which is 13.9 mm wide.

Operating Conditions

The operating temperature range spans -25°C to 70°C without derating. 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 STBDDI3420 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 three items to install this module. First, use the STBXBA1000 mounting base. Next, connect a power distribution module such as the STBPDT3100. Finally, use field wiring connectors. The screw-type connector STBXTS1100 or spring clamp STBXTS2100 works well.

Mounting Steps

Begin by snapping the STBXBA1000 base onto a DIN rail. Next, seat the STBDDI3420 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 STBDDI3420 Digital Input Module

• Standard protective packaging

FAQ

What does the STBDDI3420 do?

It provides four digital input channels for 24V DC sink signals in an Advantys STB island. The module converts field sensor signals into data for the network interface module.

Can I replace the STBDDI3420 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 base and PDM does the STBDDI3420 need?

The STBDDI3420 requires the STBXBA1000 mounting base. Additionally, it works with the STBPDT3100 power distribution module.

How fast does the STBDDI3420 respond?

Typical off-to-on response is 0.925 ms. On-to-off response is 1.35 ms. You can also add input filtering from 0.5 ms up to 16 ms.

How do I ship the STBDDI3420?

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