ABB DSSS171 3BSE005003R0001 Voting Unit

The ABB DSSS 171 (Product ID: 3BSE005003R0001), also cataloged as the DSSS 171 Voting Unit, operates as a dedicated hardware component for signal fault tolerance and high-reliability logic voting within Advant Controller platforms.

Hardware Specifications

Backplane Bus Communication Velocity & Fault-Tolerant Execution

The module utilizes deterministic backplane bus communication velocity and firmware flash compatibility to process dual or triple redundant input signals without processing delay. By enforcing physical hardware voting across 19.2 VDC to 32 VDC input channels, the unit prevents single-point signal failures from propagating through DCS execution loops, sustaining continuous industrial automation uptime.

Frequently Asked Questions

Q: What is the primary operational task of the ABB DSSS 171 module?

A: The DSSS 171 functions as a hardware Voting Unit designed to enhance signal reliability and fault tolerance in Advant Controller distributed control systems.

Q: What are the input voltage range and current load ratings for the DSSS 171?

A: The module accepts a DC input voltage range from 19.2 VDC to 32 VDC and supports a maximum current capacity of 16 A.

Field Installation Guidelines

Isolate main system power feeds before mounting or replacing the voting unit module on the controller rack. All power conductors supplying the 19.2 VDC to 32 VDC inputs must be sized appropriately to carry up to 16 A continuous current, with field wiring secured in dedicated wireways separate from high-voltage AC lines. Ensure protective earth grounding leads are securely connected to a single-point earth ground bus with low impedance to guarantee transient voltage suppression.