Product Introduction: The Versatile Upgrade for Your Modicon STB System
When your existing analog input modules become obsolete or fail to meet precision demands, the Schneider STBACI1230K offers a seamless upgrade path. Designed for the Modicon STB distributed I/O platform, this compact kit integrates a 12-bit resolution analog-to-digital converter with two 0...20 mA current input channels. The Schneider STBACI1230K handles critical process signals with a 5 ms response time and supports hot swapping without system shutdown, making it ideal for continuous operations.
Part of the Modicon STB family, the kit includes the STBACI1230 module, STBXBA1000 base, and two connectors (STBXTS1100 screw-type and STBXTS2100 spring clamp). Whether you are replacing outdated hardware or expanding your control network, the Schneider STBACI1230K ensures reliable data acquisition with minimal downtime.
Technical Specifications Breakdown
The Schneider STBACI1230K delivers precise analog measurement through key engineered parameters:
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Input Range & Resolution: 0...20 mA current input with 12-bit resolution provides fine granularity for proportional signals. Integral linearity of ±0.1% FS ensures accurate representation of process variables.
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Isolation & Protection: 1500 V isolation between channels and logic bus (for 1 minute) protects sensitive PLC circuits. Short-circuit protection on sensor supply (100 mA per channel) prevents damage.
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Hot Swapping & Fallback: Cold swapping is supported; hot swapping fallback works with standard NIMs. Fallback state can be user configured with standard NIMs – essential for redundant systems.
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Environmental Durability: Operates from -25 to 70 °C, with 95% relative humidity at 60 °C. IP20 protection per EN 61131-2 class 1 makes it suitable for control cabinet installation.
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Power & Communication: Requires 24 V DC supply from power distribution module STBPDT3100/3105. Consumes 30 mA from the 5 V logic bus.
Industry Applications: Retrofitting and Expanding Control Systems
Use the Schneider STBACI1230K to upgrade legacy analog input stages in industries such as water treatment, packaging, and material handling. In a typical retrofit scenario, replace an older 8-bit module with the STBACI1230K to improve measurement accuracy (12-bit) and add hot-swap capability. The low-pass filter (25 Hz) reduces noise on slowly changing signals like tank levels or conveyor speeds.
Another application is expanding a Modicon STB island in a new machine build. The kit's two current inputs interface directly with 4-20 mA transmitters (pressure, temperature, flow) without external signal conditioners. The 1500 V isolation ensures operators are safe even during transient faults.
Compatibility & Integration
The Schneider STBACI1230K is designed for seamless integration with the Modicon STB distributed I/O solution. It mounts on the STBXBA1000 base and requires a power distribution module (STBPDT3100 or STBPDT3105) for the 24 V DC sensor supply. The kit addresses 4 input words and supports both EN 61131-2 and IEC 61131-2 data formats. Compatibility with standard NIMs enables hot swapping fallback, while basic NIMs use a fixed fallback state. For dual-channel configurations, the STBACI1230K complements other STB analog or digital modules within the same island.
Selection Guide & Purchasing Advice
Before ordering the Schneider STBACI1230K, verify that your existing STB base and NIM are compatible. The kit includes the module, base, and connectors; you only need to ensure proper power distribution (STBPDT3100/3105) and DIN rail mounting. For bulk replacements or new projects, trust UBEST Automation for genuine Schneider parts and fast shipping. Our inventory includes the STBACI1230K and all required accessories – contact us for pricing and lead times.
Maintenance & Reliability
With no moving parts and an IP20 enclosure, the Schneider STBACI1230K requires minimal maintenance. Periodic checks of connector tightness and ambient temperature (keep within -25 to 70 °C) ensure long service life. The module's cold swapping capability allows safe replacement without powering down the entire rack. Environmental certifications (ATEX Cat 3G, FM Class 1 Div 2, CSA, UL) confirm its reliability in industrial atmospheres.