What Is the STBDDI3615K?
When your distributed I/O system needs reliable digital input detection, the Schneider STBDDI3615K basic digital input kit delivers. Part of the Modicon STB distributed I/O solution family, this kit combines the STBDDI3615 module with essential mounting and connection components. It provides 6 discrete inputs at 24 V DC, making it a straightforward choice for monitoring discrete signals in industrial environments.
Technical Specifications Breakdown
The STBDDI3615K operates with a rated supply voltage of 24 V DC and accepts input voltage limits of 15...30 V at state 1 and -3...5 V at state 0. Each input draws 4.5 mA, with state 0 guaranteed at ≤0.5 mA and state 1 at ≥2.5 mA. The discrete input logic is positive, ensuring compatibility with standard industrial sensors. Response times are 5.25 ms off-to-on and 5.75 ms on-to-off, with input filtering set at 5 ms. The kit includes reverse polarity protection and input protection via a resistor-limited circuit, plus a power protection integrated fuse on the PDM with a time lag of 5 A. Insulation between channels and the logic bus is rated at 1500 V for 1 minute. The module supports cold swapping and hot swapping for basic NIMs, allowing flexible maintenance without system shutdown.
Industry Applications
In manufacturing lines where 24 V DC discrete sensors monitor part presence or position, the STBDDI3615K provides a compact and reliable interface. Its 6 inputs suit applications like conveyor belt status detection or machine guard monitoring. The kit's positive logic and fast response times make it ideal for high-speed sorting systems where precise timing is critical. For packaging machinery, the STBDDI3615K can handle input from limit switches or proximity sensors, ensuring accurate cycle control.
Installation & Setup Guidance
Mount the STBDDI3615K on a 35 x 7.5 mm or 35 x 15 mm symmetrical DIN rail using the included STBXBA1000 base. Connect field wiring via the 6-terminal screw type connector (STBXTS1100) or spring clamp connector (STBXTS2100). Ensure the supply voltage is within 24 V DC and that the power distribution module (STBPDT3100/3105) is properly installed. The module status LED (green RDY) and per-channel LEDs (green IN1 to IN6) help verify operation during commissioning.
Maintenance & Reliability
Regularly inspect the STBDDI3615K for signs of environmental stress such as dust or moisture, given its IP20 protection rating. The module operates reliably from 0 to 60 °C without derating and can be stored from -40 to 85 °C. Vibration resistance up to 3 gn at 58...150 Hz and shock resistance of 30 gn at 11 ms ensure durability in harsh industrial settings. Periodic verification of input voltage levels and connection integrity helps maintain long-term performance.
Compatibility & Integration
The STBDDI3615K integrates seamlessly with Modicon STB distributed I/O solutions. It is compatible with the STBXBA1000 I/O base and works with power distribution modules STBPDT3100/3105. The kit supports cold and hot swapping with basic NIMs, simplifying system expansion or maintenance. For system integration, ensure the NIM and backplane support the required input configuration.
Frequently Asked Questions
Q: What is the input logic of the STBDDI3615K?
A: The discrete input logic is positive, meaning the input is active when voltage is applied.
Q: Can I hot swap the STBDDI3615K module?
A: Yes, the module supports hot swapping for basic NIMs, allowing replacement without powering down the system.
Q: What is the maximum input voltage the module can handle?
A: The permissible voltage is 30 V, with an absolute maximum of 56 V for 1.3 ms.
Q: Does the kit include all necessary mounting components?
A: Yes, the kit includes the STBDDI3615 module, STBXBA1000 base, and both screw and spring clamp connectors.
Q: What certifications does the STBDDI3615K hold?
A: It is certified CSA, FM Class 1 Division 2, and UL, with CE marking.
