Schneider STBEPI2145K – Parallel Interface Kit for Modicon STB
The Schneider STBEPI2145K is a parallel interface kit designed for the Modicon STB distributed I/O solution. This module provides 12 input channels and 8 output channels, all operating at 24V DC. Engineers working with TeSys Quickfit and TeSys U applications will find this kit particularly suitable for integrating motor control and monitoring functions into a distributed architecture.
The input stage accepts voltages from 15 to 30V for state 1 and -3 to 5V for state 0. It guarantees a current of at least 2 mA for state 1 and at most 0.5 mA for state 0. This clear threshold ensures reliable signal detection in industrial environments. The output stage delivers 24V DC and includes integrated protection through a 10 A time-lag fuse on the power distribution module, along with overload and short-circuit protection. Inputs also feature resistor-limited protection to handle transient events.
Key Technical Specifications and Features
The STBEPI2145K supports both cold and hot swapping, although hot swapping requires standard network interface modules (NIMs). Fallback behavior for basic NIMs is state 0, while standard NIMs allow user configuration. The module connects via four RJ45 connectors and requires a rated supply voltage of 24V DC. Its power distribution module compatibility includes the STBPDT3100 and STBPDT3105, and it mounts on the STBXBA3000 base.
Current consumption details help system designers plan power budgets. The sensor bus draws up to 100 mA at 24V DC, the actuator bus draws up to 220 mA for 150 ms during startup, and the logic bus consumes 100 mA at 5V DC. In a steady state with all outputs off, the actuator bus draws 50 mA, plus 80 mA per active output. This granular data makes it easier to size power supplies.
The kit includes multiple status LEDs: one green (module ready), one red (module error), two green for switch positions (S1 and S2), and four green for output status. These indicators simplify troubleshooting and commissioning. With an IP20 rating per IEC 61131-2 class 1, the module suits clean, controlled environments. It can operate between -25°C and 70°C without derating and survive storage temperatures from -40°C to 85°C. Relative humidity can reach 95% at 60°C without condensation.
Physical dimensions are 170 mm depth, 28.1 mm height, and 128.3 mm width. The net weight is only 0.165 kg. The module holds certifications including FM Class 1 Division 2, UL, CSA, and CE marking. It withstands vibration up to 3 gn and 5 gn depending on DIN rail size, along with shock resistance of 30 gn for 11 ms per IEC 88 reference 2-27.
Choosing the Schneider STBEPI2145K means gaining a reliable parallel interface kit with clear electrical characteristics and robust mechanical design. Whether integrating with TeSys motor starters or building a distributed I/O network, this module delivers the performance and flexibility that automation professionals expect from Schneider Electric.