Schneider STBDDI3420K Standard Digital Input Kit
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| Mobile | +8613666084105 | |||||||
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Technical Specifications
| Parameter | Specification |
|---|---|
| Manufacturer | Schneider Electric |
| Model | STBDDI3420K |
| Product Name | Standard Digital Input Kit |
| Product Series | Modicon STB |
| Product Type | Standard Digital Input Kit |
| Module Model | STBDDI3420 |
| Number of Digital Inputs | 4 |
| Rated Input Voltage | 24 V DC |
| Input Voltage Range (ON State) | 11–30 V DC |
| Input Voltage Range (OFF State) | -3–5 V DC |
| Maximum Permissible Voltage | 30 V |
| Absolute Maximum Voltage | 56 V for 1.3 ms |
| Digital Input Current | 8 mA |
| Guaranteed ON-State Current | ≥ 2.5 mA |
| Guaranteed OFF-State Current | ≤ 1.2 mA |
| Input Logic | Positive or negative logic |
| Input Response Time | 0.925 ms (OFF to ON); 1.35 ms (ON to OFF) |
| Input Filtering | Configurable filtering, depending on system settings |
| Input Protection | Resistor-limited input protection and reverse-polarity protection |
| Channel-to-Logic-Bus Insulation | 1500 V for 1 minute |
| Kit Components | STBDDI3420 module, STBXBA1000 base, STBXTS1100 6-terminal screw connector, STBXTS2100 6-terminal spring-clamp connector |
| Compatible I/O Base | STBXBA1000 |
| Compatible Power Distribution Modules | STBPDT3100 / STBPDT3105 |
| Hot Swapping | Supported with standard NIM configurations |
| Cold Swapping | Supported |
| Mounting | Modicon STB modular I/O system |
| Protection Rating | IP20 |
| Operating Temperature | -25°C to +70°C |
| Storage Temperature | -40°C to +85°C |
| Relative Humidity | Up to 95% at 60°C, non-condensing |
| Certification | CE, UL, CSA, FM Class I Division 2 |
| Dimensions | 18.4 × 125 × 65.1 mm |
| Weight | 0.111 kg |
FAQ
Q1: What is the main function of the Schneider STBDDI3420K?
The STBDDI3420K is a four-channel digital input kit designed for Schneider Electric Modicon STB distributed I/O systems. It receives ON/OFF signals from field devices such as proximity switches, push buttons, and compatible sensors, allowing a PLC or automation controller to monitor field conditions.
Q2: What input voltage does the STBDDI3420K support?
The module is designed for 24 V DC digital input signals. The specified ON-state voltage range is 11–30 V DC, while the OFF-state range is -3–5 V DC. Signals outside these ranges may not be interpreted reliably, so the field-device output should be checked before commissioning.
Q3: How many digital input channels are available?
The STBDDI3420K provides four digital input channels. Each channel can be used to monitor an individual field signal, subject to the system wiring arrangement and sensor compatibility. Confirm the channel assignments in the wiring diagram before connecting field devices.
Q4: Which components are included in the STBDDI3420K kit?
The kit includes the STBDDI3420 digital input module, an STBXBA1000 I/O base, an STBXTS1100 six-terminal screw connector, and an STBXTS2100 six-terminal spring-clamp connector. Check the supplied parts against the required system configuration before installation.
Q5: Which Modicon STB components are compatible with this input kit?
The specified compatible components include the STBXBA1000 I/O base and STBPDT3100 or STBPDT3105 power distribution modules. Compatibility should also be checked against the network interface module, power distribution arrangement, and overall island configuration.
Q6: What should be checked if a digital input signal is not detected?
First, confirm that the field device is operating and supplying a valid 24 V DC signal. Then check terminal assignments, common or return wiring, connector seating, and the voltage at the relevant input channel. If the electrical signal is correct but the controller still shows the input as OFF, inspect the channel configuration and module status indicators.
Q7: Can the STBDDI3420K detect both positive and negative input logic?
The module supports positive or negative input logic. The actual wiring and signal interpretation must match the field-device output and the system configuration. Verify the selected logic and wiring diagram before applying power, particularly when replacing an existing input module.
Q8: What should be checked after replacing an STBDDI3420K?
Verify that the module and base are correctly installed, all field wiring matches the terminal diagram, and the input voltage is within specification. After restoring power, check the module status indicator, test each of the four input channels, and confirm that the PLC receives the expected signals without persistent diagnostic errors.
Schneider STBDDI3420K Standard Digital Input Kit is in stock. Please contact us for a quick quote and competitive pricing.
| Company Information | ||||||||
| [email protected] | ||||||||
| Mobile | +8613666084105 | |||||||
| +8613666084105 | ||||||||
| 13666084105 | ||||||||
| Add to | Room 1004, No. 62 Xiangxiu Li, Siming District, Xiamen City, Fujian Province, China | |||||||
Company Introduction
Xiamen Shengruite Trading Co., Ltd. is a company specializing in the supply of industrial PLC spare parts.
We provide high-quality PLC spare parts to customers in the global manufacturing, energy and power, chemical and other fields.
Since its establishment in 2011, after 13 years of rapid development, the cumulative global shipments have reached 223,650 pieces, with an annual output value of US$50 million.
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