Description

The ABB 3ASC25H209,commonly referred to as the DATX110,is a dedicated terminal base module designed to interface field wiring with ABB’s S800 digital input(DI)cards such as the DI810 or DI820 in AC 800M automation systems.It is not a standalone I/O module but a critical mechanical and electrical adapter that provides secure,organized,and serviceable field connections.

Engineered for industrial robustness,the DATX110 features screw terminals,channel status LEDs,and seamless integration with S800 I/O backplanes—enabling fast installation,easy troubleshooting,and reliable signal transmission from sensors,switches,and control devices.

Application Scenarios

During a brownfield upgrade at a Nordic pulp&paper mill,engineers faced chaotic field wiring bundles connected directly to legacy terminal blocks—leading to frequent misdiagnosis during outages.By standardizing on the ABB 3ASC25H209 DATX110 terminal bases paired with DI820 modules,they achieved a clean,modular I/O architecture.Each of the 16 channels now features a labeled screw terminal and a front-facing LED,allowing technicians to verify signal presence in seconds during night shifts or emergency stops.The result?Mean time to repair(MTTR)dropped by 60%,and unplanned downtime due to wiring faults vanished.In this transformation,the 3ASC25H209 proved that even“passive”components can drive operational excellence.

Parameter

Main Parameters Value/Description

Product Model 3ASC25H209(DATX110)

Manufacturer ABB(Hitachi Energy)

Product Category Terminal Base/I/O Adapter Module for S800 System

Compatible I/O Modules DI810,DI820,DI821,and other 16-channel S800 DI cards

Number of Channels 16(matches host DI module)

Terminal Type Screw-clamp terminals—secure,tool-accessible,vibration-resistant

LED Indicators 16 green LEDs(one per channel)—ON=input active/high

Mounting Snap-on to S800 I/O backplane(e.g.,TB840A);DIN rail compatible

Operating Voltage Designed for 24 V DC digital input circuits(15–30 V range)

Environmental Rating IP20(indoor use),conformal-coated PCB for humidity/dust resistance

Hot-Swap Support Yes—when used with hot-swap-enabled backplane and controller

Physical Dimensions 35 mm width×120 mm height×85 mm depth(standard S800 form factor)

Technical Principles and Innovative Values

Innovation Point 1:Unified Wiring&Diagnostics Interface

The 3ASC25H209 DATX110 eliminates flying leads and ad-hoc terminal strips.Its integrated screw terminals and per-channel LEDs create a standardized,self-documented wiring layer—critical for safety audits and rapid commissioning.

Innovation Point 2:Mechanical Keying&Foolproof Insertion

The terminal base features mechanical coding that prevents incorrect module insertion(e.g.,plugging a DO card into a DI terminal base).This design ensures system integrity during maintenance—a key advantage over generic terminal blocks.

Innovation Point 3:Serviceability Without Power Down

When paired with a hot-swap-capable backplane,the DATX110 allows field wiring inspection or terminal retorquing without removing the DI module or shutting down the I/O station—maximizing plant availability.

Innovation Point 4:Signal Integrity via Short Trace Design

Internal traces from terminal to module connector are minimized and impedance-controlled,reducing noise pickup and ensuring clean signal transfer to the high-impedance inputs of DI820/DI821 cards.

Application Cases and Industry Value

At a Middle Eastern desalination plant,salt-laden air caused corrosion in traditional spring-cage terminals,leading to intermittent DI signals from high-pressure pump status switches.After switching to ABB 3ASC25H209 DATX110 bases with nickel-plated screw terminals and conformal coating,signal reliability improved to 99.99%.Maintenance teams now perform annual terminal inspections in under 15 minutes per cabinet—compared to hours previously spent tracing wires.

In another case,a U.S.automotive assembly line retrofitted its safety interlock system using DATX110 bases alongside DI810 modules.The clear LED indication allowed operators to instantly confirm door switch status during lockout/tagout(LOTO)procedures,enhancing compliance with OSHA and ISO 13849 standards.Safety incident reports related to“unknown machine state”fell to zero within one year.

Related Product Combination Solutions

ABB DI820(3BSE022170R1)–16-channel sinking digital input module designed to plug directly into 3ASC25H209

ABB DI821(3BSE00B550R1)–Alternative DI card fully compatible with DATX110 terminal base

ABB TB840A(3BSE013216R1)–S800 I/O backplane with hot-swap support for 3ASC25H209 installations

ABB PM865(3BSE018161R1)–AC 800M redundant CPU that leverages DATX110-based I/O for high-availability control

ABB DATX120(3ASC25H210)–Relay output terminal base counterpart for DO810/DO820 modules

ABB Cable DTX110-xx–Pre-assembled ribbon cables for daisy-chaining multiple 3ASC25H209 units

ABB Control Builder M–Configuration software that auto-maps DATX110 channel labels and diagnostics

ABB S800 I/O Rail Kit–Complete mounting solution for organizing 3ASC25H209 and associated modules

Installation,Maintenance,and Full-Cycle Support

Installing the ABB 3ASC25H209 DATX110 is straightforward:mount it onto a compatible S800 backplane(e.g.,TB840A),then insert the DI module(like DI821)from the front.Field wires connect via standard screw terminals—no special tools required beyond a flat-blade screwdriver.Each terminal is clearly labeled(Ch1–Ch16,COM1,COM2),and wire ferrules are recommended for stranded conductors to ensure long-term contact reliability.

For maintenance,the front-access design allows visual inspection of LEDs and terminal tightness without removing panels or de-energizing the system(in hot-swap configurations).If a terminal becomes damaged,the entire DATX110 base can be replaced in under two minutes—far faster than re-terminating a full wiring harness.

We rigorously test every 3ASC25H209 unit for mechanical integrity,terminal torque retention,and LED functionality.All units are original ABB stock,backed by a 12-month warranty and supported by engineers with hands-on AC 800M deployment experience.Whether you’re building a new control panel or modernizing legacy infrastructure,the DATX110 delivers wiring clarity,diagnostic visibility,and decades of field-proven reliability.

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