DSSS171 ABB | Redundant Voting Module for INFI 90 & Harmony
Manufacturer: ABB
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Part Number: DSSS171 3BSE005003R0001
Condition：New with Original Package
Product Type: Redundant Voting Module for INFI 90 & Harmony
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Country of Origin: Sweden
Payment:T/T, Western Union
Shipping port: Xiamen
Warranty: 12 months
ABB DSSS171 Voting Unit
Overview
The ABB DSSS171 is a high-integrity voting unit designed for safety instrumented systems (SIS) within ABB’s INFI 90 and Harmony series.
It enables redundant signal voting, providing reliable decision-making in critical applications such as emergency shutdowns, process interlocks, and fire & gas detection.
The unit supports 2-out-of-3 (2oo3) and 1-out-of-2 (1oo2) voting logic, outputting results only when logic conditions are satisfied.
Its rugged, compact design ensures operation in harsh industrial environments while maintaining system availability and fault tolerance.
Technical Specifications
| Specification | Details |
|---|---|
| Model Number | DSSS171 |
| Part Number | 3BSE005003R0001 |
| Product Type | Voting Unit |
| Voting Logic Supported | 2oo3, 1oo2 |
| Input Channels | 3 independent digital or analog inputs |
| Output Channels | 1 voting result output |
| System Compatibility | INFI 90, Harmony series |
| Power Supply | 24 V DC (via system backplane) |
| Dimensions (W × H × D) | 108 × 54 × 234 mm |
| Weight | 0.6 kg |
| Mounting | Rack-mounted |
| Application Areas | Safety-critical systems, ESD, fire & gas, process interlocks |
| Country of Origin | Sweden |
| RoHS Compliance | Exempt per EU Directive 2011/65/EU Article 2 |
FAQs
Q1: What is the main function of the DSSS171?
✅ The ABB DSSS171 ensures redundant signal voting for safety-critical applications.
Q2: Which voting logics are supported?
✅ It supports 2oo3 (two-out-of-three) and 1oo2 (one-out-of-two) voting logic.
Q3: How many input and output channels does it have?
✅ The unit has 3 independent input channels and 1 output channel for voting results.
Q4: Is this unit suitable for harsh industrial environments?
✅ Yes, the rugged design makes it ideal for ESD, fire & gas, and process interlocks.
Q5: Is the DSSS171 new and original?
✅ Yes, it is 100% original ABB, in stock, and ready to ship via DHL, FedEx, UPS, or TNT.