STBDDI3420K
Schneider Electric
Overview
The STBDDI3420K is a Standard digital input kit in the Modicon STB distributed I/O solution range from Schneider Electric. It is engineered for industrial automation duties within the Advantys STB distributed I/O ecosystem.
Application & Technical Notes
As a standard digital input kit, the STBDDI3420K is intended for deployment in panel-based control cabinets and machine enclosures where Advantys STB distributed I/O equipment is installed. It converts field signals (sensors, switches, transmitters) into the digital or analogue values the controller processes, forming the acquisition layer of the automation scheme.
Key published characteristics include a limits : rating. These values should be confirmed against the current manufacturer datasheet before final selection, as options and suffixes vary by configuration.
Maintenance & Diagnostics
Avoid condensation — the rated humidity is 95 % at 60 °C without condensation; store and operate the module in a dry, pollution-degree-appropriate enclosure. Verify field wiring, shielding and grounding at installation; check terminal torque and confirm signal types match the configured range. Periodically inspect for loose terminations, induced noise and channel-level diagnostics reported by the controller. Always de-energise the circuit and follow lock-out/tag-out before handling; refer to the official instruction bulletin for service procedures.
Sourcing & Procurement
When sourcing the STBDDI3420K, distinguish three supply tiers: (1) genuine Schneider Electric stock from an authorised distributor; (2) compatible equivalents or surplus/NOS (new-old-stock) from third parties; (3) alternative parts offering equivalent function. Genuine supply carries the full warranty and traceability; compatible or alternative items may be cheaper but should be validated for form, fit, firmware and certification before use in a live system. PLCXpert publishes this page as an independent reference and does not sell the part — verify every claim with the manufacturer or your distributor.
Confirm the module matches your Advantys STB distributed I/O rack, the required channel count, signal type and voltage, and the firmware/configuration of the controller. Lead times and pricing vary by region and lifecycle status; obtain a current quote from an authorised channel rather than relying on stale listings.
Frequently Asked Questions
What is the STBDDI3420K?
The STBDDI3420K is a standard digital input kit in the Modicon STB distributed I/O solution range from Schneider Electric. It is described by the manufacturer as: Standard digital input kit.
What are the key technical ratings of the STBDDI3420K?
Its published highlights include limits :. Full electrical, mechanical and environmental limits are listed in the manufacturer datasheet and should be confirmed for your exact suffix.
How is the STBDDI3420K mounted or installed?
Installation follows the standard Advantys STB distributed I/O mounting practice for this device class; refer to the installation manual for exact dimensions and torque.
Is the STBDDI3420K compatible with my controller?
It is part of the Advantys STB distributed I/O family. Confirm the specific rack, firmware revision, slot rules and configuration with the controller documentation before purchase, as compatibility depends on the exact system build.
What should I check before buying the STBDDI3420K?
Verify the genuine part number and suffix, confirm it matches your platform and ratings, check the current lifecycle/availability status, and buy from an authorised distributor. PLCXpert provides this reference only and does not sell the component.
Specifications
STBDDI3420K | Schneider Electric | Digital input kit, Modicon STB
Main
| Range of product Modicon STB distributed I/O solution | Product or component type Standard digital input kit Kit composition STBXTS2100, 6-terminal spring clamp connector STBDDI3420 module STBXTS1100, 6-terminal screw type connector STBXBA1000 base Discrete input number 4 |
|---|---|
| Discrete input voltage 24 V | Discrete input voltage type DC |
Complementary
| Note | Input voltage limits 11...30 V at state 1 -3...5 V at state 0 Permissible voltage 30 V Absolute maximum voltage 56 V 1.3 ms Discrete input current 8 mA Current state 0 guaranteed <= 1.2 mA Current state 1 guaranteed >= 2.5 mA Discrete input logic Positive or negative Response time 0.925 ms off-to-on 0.5 ms 1.35 ms on-to-off 0.5 ms Protection type Power protection integrated fuse on PDM time lag 10 A |
|---|---|
| Input protection resistor-limited | N/A |
| Reverse polarity protection | Insulation between channels and logic bus 1500 V for 1 minute |
| Cold swapping Yes | hot swapping Yes for standard NIMs Input filtering 1 ms 2 ms 4 ms 8 ms 0.5 ms 16 ms +/- 0.25 ms Current supplied by sensor 100 mA per channel Product compatibility I/O base STBXBA1000 |
| Power distribution module STBPDT3100/3105 | [Us] rated supply voltage 24 V DC |
| Supply Power distribution module | Current consumption 45 mA at 5 V DC for logic bus |
| Marking CE | Overvoltage category II Status LED 1 LED (green) module status (RDY) 1 LED per channel (green) channel status (IN1 to IN4) 1 LED (red) module error (ERR) Depth 65.1 mm Height 18.4 mm Width 125 mm Net weight 0.111 kg |
Environment
| Note | Standards IEC 61131-2 Type 1 |
|---|---|
| Product certifications CSA | FM Class 1 Division 2 UL |
| Pollution degree 2 conforming to IEC 60664-1 | Operating altitude <= 2000 m IP degree of protection IP20 conforming to IEC 61131-2 class 1 |
| Ambient air temperature for | operation -25…70 °C (without derating) |
| Ambient air temperature for | operation 32...140 °F without derating |
| Ambient air temperature for | storage -40…85 °C without derating |
| Ambient air temperature for | storage -40...185 °F without derating Relative humidity 95 % at 60 °C without condensation Vibration resistance 3 gn at 58…150 Hz on 35 x 7.5 mm symmetrical DIN rail 5 gn at 58…150 Hz on 35 x 15 mm symmetrical DIN rail +/-0.35 mm at 10…58 Hz Shock resistance 30 gn for 11 ms conforming to IEC 88 reference 2-27 |
Reproduced from the manufacturer's published data. Values marked "Not available" are absent from the source document.