Why the STBACI1230K Belongs in Your Spare Parts Strategy
Downtime on a distributed I/O line rarely announces itself. A single analog input kit fails, and an entire process loop goes dark. The Schneider Electric STBACI1230K is the exact replacement you want on the shelf before that happens. This standard analog input kit belongs to the Modicon STB distributed I/O solution and ships as a complete assembly: the STBACI1230 module, an STBXBA1000 base, plus both an STBXTS1100 6-terminal screw type connector and an STBXTS2100 6-terminal spring clamp connector. One part number covers the module, the mounting base, and your choice of termination style.
What the Kit Delivers
The STBACI1230K handles two current analog input channels with a 0…20 mA signal range. Resolution is 12 bits, so the module resolves the full input span into 4096 discrete steps. A single low pass input filter at 25 Hz smooths noisy field signals before they reach your control logic. Response time is 5 ms, and the update time is 10 ms.
Accuracy holds up where it matters. Integral linearity is +/- 0.1 %FS, differential linearity is monotonic, and absolute accuracy error is +/- 0.5 % of full scale at 25 °C. Temperature drift is +/-0.01 %/°C, which keeps readings stable across a wide operating window. Input impedance is <= 300 Ohm, and each input channel supplies 100 mA for sensors. Short-circuit protection is built in.
Key Specifications at a Glance
| Parameter | Value |
|---|---|
| Analogue input type | Current 0…20 mA |
| Analogue input number | 2 |
| Analogue input resolution | 12 bits |
| Type of filter | Single low pass input filter 25 Hz |
| Response time | 5 ms |
| Update time | 10 ms |
| Absolute accuracy error | +/- 0.5 % of full scale 25 °C |
| Temperature drift | +/-0.01 %/°C |
| Input impedance | <= 300 Ohm |
| Supply current for sensors | 100 mA per input channels |
| [Us] rated supply voltage | 24 V DC |
| Current consumption | 30 mA 5 V DC logic bus |
| Insulation, channels to logic bus | 1500 V for 1 minute |
| Insulation, channels to sensor bus | 30 V |
| Addressing requirement | 4 input words |
| Product weight | 0.116 kg |
Built for Hot Swapping and Fast Recovery
Cold swapping is supported. Hot swapping is supported with fallback for standard NIMs, and fallback status is State 0 on basic NIMs or user configurable on standard NIMs. That means you can replace a module without tearing down the whole segment, which directly protects your production uptime. The kit carries ATEX Cat 3G, CSA, C-Tick, FM Class 1 Division 2, and UL certifications, and it is marked CE. Overvoltage category is II, pollution degree 2 per IEC 60664-1.
Where This Kit Fits
Use the STBACI1230K wherever a Modicon STB island needs two current-loop inputs. Typical scenarios include process skids that report pressure or flow as 0…20 mA, remote I/O cabinets in packaging lines, and water treatment panels that must keep running through a module swap. The 4 input word addressing requirement makes integration predictable for programmers commissioning a segment.
Installation and Compatibility Notes
The kit mounts on a 35 x 7.5 mm or 35 x 15 mm symmetrical DIN rail. Vibration resistance is +/-0.35 mm from 10…58 Hz, 3 gn from 58…150 Hz on 35 x 7.5 mm rail, and 5 gn from 58…150 Hz on 35 x 15 mm rail. Shock resistance is 30 gn for 11 ms. Operating altitude is <= 2000 m, and relative humidity tolerance is 95 % at 60 °C without condensation.
The module pairs with the STBXBA1000 mounting base and the STBPDT3100 or STBPDT3105 power distribution module. Supply comes from the power distribution module. Two status LEDs simplify diagnosis: a green module status LED (RDY) and a red module error LED (ERR). Data format follows EN 61131-2 and IEC 61131-2.
Environmental Range and Long-Term Reliability
Ambient operating temperature spans -25…70 °C, or 32…140 °F without derating. Storage range is -40…85 °C, or -40…185 °F without derating. The IP20 rating per EN 61131-2 class 1 suits cabinet installation. For maintenance, inspect terminals periodically, confirm the DIN rail is secure, and follow the manufacturer’s safety manual for all service work. Keep spare kits on hand so a failed channel never becomes a lost shift.
Verify Before You Order
Please verify current lifecycle status and availability with SpareTechPLC before ordering. Confirm your existing base and connector type, your power distribution module, and your NIM configuration so the replacement drops in cleanly. SpareTechPLC supplies industrial automation parts and news for teams that cannot afford surprises.
