Products Description
ABB 129740-002 SIO Assembly Interface Module in stock
ABB 129740-002 is an SIO smart I/O assembly for weight measurement system, also known as smart weight pre-processing interface board. It is specially used to receive weak signals from load cells, and complete signal amplification, filtering and high-precision conversion for weighing applications.

This is an obsolete spare part of ABB legacy automation platform, with gross weight of 6.4kg. It transmits processed weight data to the main controller through internal bus, widely used in batching, material weighing and proportioning control loops in industrial plants.


Data Parameters
1. Brand: ABB.
2. Model: 129740-002.
3. Product Type: SIO Assembly Smart Weight Interface Module.
4. Application: Industrial Weighing & Batching Control System.
5. Feature: Load cell signal conditioning, high precision weight sampling.
6. Characteristic: Built-in noise filtering, dedicated for weighing sensor.
7. Communication: Internal backplane bus matched with controller.
8. Package: Original SIO assembly unit.
9. Mounting: Rack installation inside control cabinet.
10. Operating Temperature: -20℃ ~ +60℃.
Core Functions
1. Receive and condition millivolt weak signals from weighing load cells.
2. Complete signal amplification, filtering and high-precision A/D conversion.
3. Calculate gross weight / net weight and upload data to main controller.
4. Detect sensor wire break and abnormal signal for fault alarm.
5. Support batching, dosing and material proportioning closed-loop control.
Application Scenarios
1. Cement, chemical and metallurgy raw material batching system.
2. Food, feed and grain automatic weighing and dosing equipment.
3. ABB old generation weighing control system maintenance and spare replacement.
4. Silo material weight monitoring and material level balance control.
5. Industrial weighing spare parts inventory backup.
FAQ
1. Q: What is ABB 129740-002?
A: It is an SIO smart weight interface assembly for load cell signal processing.2. Q: What signal does it process?
A: It processes weak millivolt signals from weighing load cells.3. Q: Is it still in production?
A: This model is obsolete, only available as surplus replacement spare.