STBDDI3420K Schneider Electric Digital Input Kit | Modicon STB

STBDDI3420K Digital Input Kit for Modicon STB Distributed I/O

Key Technical Specifications

• Brand: Schneider Electric
• Model: STBDDI3420K
• Series: Modicon STB distributed I/O solution
• Category: Standard digital input kit
• Discrete input number: 4
• Discrete input voltage: 24V DC
• Input voltage limits: 11…30V at state 1, -3…5V at state 0
• Discrete input current: 8 mA
• Input logic: positive or negative
• Response time: 0.925 ms off-to-on, 1.35 ms on-to-off
• Insulation: 1500V between channels and logic bus for 1 minute
• Protection rating: IP20
• Dimensions (H×W×D): 18.4 × 125 × 65.1 mm
• Net weight: 0.111 kg

Kit Composition

• STBDDI3420 digital input module
• STBXBA1000 I/O base
• STBXTS2100 6-terminal spring clamp connector
• STBXTS1100 6-terminal screw type connector

Input Performance and Protection

• Four 24V DC channels handle positive or negative logic without rewiring.
• State 1 accepts 11…30V, and state 0 stays below 5V for clean switching.
• Each channel draws 8 mA, and the module consumes 45 mA on the 5V DC logic bus.
• An 8 mA input current with 100 mA sensor supply per channel supports most field devices.
• Selectable input filtering covers 0.5 ms, 1 ms, 2 ms, 4 ms, 8 ms, and 16 ms settings.
• A resistor-limited input protects against reverse polarity and overcurrent.
• The integrated PDM fuse carries a 10 A time-lag rating for power protection.
• 1500V insulation separates the channels from the logic bus for safe operation.

Environmental and Physical Ratings

• The module operates from -25…70 °C without derating in industrial settings.
• Storage temperature spans -40…85 °C for safe transport and storage.
• The IP20 rating conforms to IEC 61131-2 class 1 and suits protected cabinets.
• Vibration resistance reaches 3 gn on 35 × 7.5 mm DIN rail at 58…150 Hz.
• Shock resistance meets 30 gn for 11 ms according to IEC 88 reference 2-27.
• Relative humidity reaches 95% at 60 °C without condensation.

Installation Guide

• Mount the STBXBA1000 base on a symmetrical DIN rail inside a protected enclosure.
• Insert the STBDDI3420 module into the base and lock it in place.
• Wire field devices to the 6-terminal connectors and tighten the terminals.
• Connect the 24V DC supply through an STBPDT3100 or STBPDT3105 power distribution module.
• Choose the input filter value that matches your signal noise level.
• Check the green RDY LED and the per-channel IN1 to IN4 LEDs after power up.
• Hot swap the module on standard NIMs when maintenance requires a replacement.

Package Contents

• 1 × STBDDI3420 digital input module
• 1 × STBXBA1000 I/O base
• 1 × STBXTS2100 6-terminal spring clamp connector
• 1 × STBXTS1100 6-terminal screw type connector
• 1 × Protective packaging

Shipping and Support

• We ship worldwide through FedEx, UPS, and DHL.
• Stock items leave our warehouse within 5 days.
• We accept returns within 30 days of delivery.
• Every unit ships brand new and original.

FAQ

• Q: How many inputs does the STBDDI3420K provide?
  A: The kit provides 4 discrete inputs rated at 24V DC.
• Q: What voltage range marks state 1 and state 0?
  A: State 1 accepts 11…30V, and state 0 stays between -3V and 5V.
• Q: What response time does the module offer?
  A: It switches off-to-on in 0.925 ms and on-to-off in 1.35 ms.
• Q: Which input filter settings are available?
  A: You can select 0.5 ms, 1 ms, 2 ms, 4 ms, 8 ms, or 16 ms filtering.
• Q: Does the kit include connectors and a base?
  A: Yes, it includes the module, STBXBA1000 base, and two 6-terminal connectors.
• Q: What are the operating temperature limits?
  A: The module runs from -25…70 °C and stores from -40…85 °C without derating.
• Q: Is the item new and in stock?
  A: Yes, we offer brand new original units with stock on hand.
• Q: How fast do you ship and which carriers do you use?
  A: We dispatch within 5 days via DHL, FedEx, or UPS.
• Q: What is your return policy?
  A: You can return the product within 30 days.

Contact NexAuto Technology Limited

• Email: sales@nex-auto.com
• Phone / WhatsApp: +86 153 9242 9628

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