ABB DSDO 115 57160001-NF Digital Output Board

ABB DSDO 115 | 57160001-NF | 2668 184-292/2 Digital Output Printed Circuit Board

The ABB DSDO 115 (Part Number: 57160001-NF, PCB Artwork / Drawing Number: 2668 184-292/2) is a 32-channel digital output module engineered for ABB MasterPiece and Advant OCS S100 I/O subracks. Built for deployment in mission-critical environments—such as marine propulsion management, offshore drilling platforms, power generation, and heavy chemical processing—this circuit board delivers galvanic isolation and switching capabilities between the controller logic and field actuators.

Designed under legacy ASEA / ABB manufacturing standards in Sweden, the module slides into standard S100 I/O chassis via standard Eurocard guide rails and engages with the backplane via high-integrity DIN pin connectors. When paired with dedicated ABB termination units (such as the DSTD series), it governs pilot solenoid valves, motor contactors, annunciator panels, interposing relays, and emergency trip circuits with fast bus cycle synchronization.

Model Details

• Manufacturer: ABB / ASEA
• Module Model: DSDO 115
• Manufacturing Part Number (MPN): 57160001-NF
• PCB Fabrication / Etch Marking: 2668 184-292/2 (also cataloged under ASEA 2668 184-292 rev. 2)
• Module Classification: S100 Direct I/O Subsystem Card
• Product Type: 32-Channel Digital Output Circuit Board
• Harmonized Tariff Schedule (HS Code): 8538.90.91 / 8538.90.9999

Technical Details

Part Number Cross-References

• Catalog Number: DSDO 115
• ABB Ident Code: 57160001-NF
• PCB Number: 2668 184-292 / 2668 184-292/2
• Legacy Designations: ASEA 2668 184-292, DSDO115
• Upgraded Equivalent: DSDO 115A (3BSE018298R1) (recommended direct evolution replacement for high-current applications)
• Functional Family: ABB MasterPiece S100 I/O / Advant OCS Series

Frequently Asked Questions

Can the ABB DSDO 115 directly drive 230 V AC loads?

No. The DSDO 115 is a low-voltage digital output board. To switch 120 V AC or 230 V AC field devices, it must be paired with an approved ABB relay connection unit, such as the DSTD 147 (120 V AC) or DSTD 148 (230 V AC), which provides interposing relay isolation between the card and the field circuit.

What is the difference between DSDO 115 and DSDO 115A?

The DSDO 115A (part number 3BSE018298R1) is an evolved version of the DSDO 115. While both feature 32 channels and operate in the S100 subrack, the DSDO 115A incorporates upgraded component circuitry and optimized thermal dissipation, serving as a functional replacement provided channel load parameters remain within design limits.

How do I troubleshoot a flashing or dead channel LED on the front panel?

First, verify whether the central processor is scanning the card (Run LED solid green). If a single channel indicator fails to illuminate when commanded by software, check the fuse on the corresponding DSTD termination block. If the fuse and external loop power are healthy, check for an open optocoupler channel on the circuit board caused by a previous external short-circuit.

Is the ABB 57160001-NF board hot-swappable?

While the S100 bus architecture supports online card insertion under specific configurations, hot-swapping is not recommended in marine engine management or vessel power management systems while underway. Always de-energize the 24 V DC field loop power prior to extracting or inserting the PCB to prevent unintended actuator triggering or bus disturbances.