Introduction
The LAX-BIU-21 is a Brake Interface Unit (BIU) designed for locomotives equipped with the IRAB class brake system. It serves as an interface for braking instructions communicated by KAVACH, DPWCS, and Train Safety Systems (TSS). The BIU is responsible for processing braking-related signals and ensuring the safe operation of locomotives by controlling braking and traction. It also provides feedback on the status of braking actions to the KAVACH, DPWCS, and TSS systems.
System Overview
- The BIU receives braking signals via CAN bus from systems like KAVACH, DPWCS, and TSS.
- It applies brakes and cuts off traction as commanded, ensuring safety and efficient operation.
- The BIU also generates audio-visual indications to alert the driver and provides feedback to the train safety systems about the execution of braking actions.
- The unit features both manual and automatic isolation capabilities for full control.
- The airflow measurement function in the BIU helps detect train parting, which is communicated to DPWCS for monitoring.
Salient Features
| Feature | Description |
| Brake System Interface | Compatible with IRAB class brake systems |
| Communication Interface | Receives braking signals via CAN bus from KAVACH, DPWCS, and TSS |
| Braking & Traction Control | Controls brake application and cuts off traction based on received signals |
| Audio-Visual Feedback | Provides audio-visual indications to the driver |
| System Feedback | Sends feedback on execution to KAVACH/ DPWCS/ TSS |
| Isolation Options | Manual and automatic isolation of the BIU |
| Train Parting Detection | Measures airflow and communicates with DPWCS for parting detection |
Technical specification
| Parameter | Details |
| Communication Interface | CAN bus (for receiving braking signals from KAVACH/ DPWCS/ TSS) |
| Brake Control Function | Applies brakes, cuts off traction |
| Indications | Audio-visual indications to driver |
| Isolation | Manual and Automatic Isolation options |
| Airflow Measurement | Yes, for detecting train parting |
| Feedback | Provides feedback to KAVACH/ DPWCS/ TSS on execution |
