ABB DP840 3BSE028926R1

Description

Detailed Parameter Table

ABB DP840 3BSE028926R1

Product Introduction

The ABB DP840 3BSE028926R1 is a high-performance 16-channel digital input module, a key component of ABB’s S800 I/O system, designed for seamless integration with the 800xA distributed control system (DCS). This module specializes in converting discrete field signals—such as limit switch statuses, emergency stop triggers, and relay contacts—into digital data for real-time process monitoring and safety logic execution.

Engineered for rugged industrial environments, the DP840 3BSE028926R1 features galvanic isolation between channels and the backplane, ensuring immunity to electrical noise and ground loops. Its SIL 3 certification makes it ideal for safety-critical applications, including emergency shutdown systems (ESD) and safety instrumented systems (SIS) in oil & gas, chemical, and power generation facilities.

As part of ABB’s modular S800 I/O family, it connects to carrier modules (e.g., CI840) to communicate with AC 800M controllers, enabling deterministic data transfer with sub-millisecond response times. The module’s hot-swappable design allows for maintenance without system downtime, enhancing operational availability.

Core Advantages and Technical Highlights

Ultra-Fast Signal Processing: With a response time of ≤1 ms, the DP840 captures transient events (e.g., emergency stop signals) critical for safety logic. This speed ensures compliance with strict shutdown time requirements in SIS applications.

Enhanced Safety & Isolation: 500 VAC galvanic isolation prevents cross-channel interference and ground loops, a critical feature in industrial environments with high electromagnetic noise (e.g., near motors or transformers). SIL 3 certification (IEC 61508) validates its suitability for high-integrity safety functions.

Robust Environmental Tolerance: Operates reliably in temperatures ranging from -25°C to +70°C and resists humidity, dust, and corrosive atmospheres (compliant with ISA-71.04 G3 severity). This durability makes it suitable for offshore platforms, chemical plants, and desert power facilities.

Simplified Integration & Maintenance: Hot-swappable design allows module replacement without powering down the system. Auto-recognition by ABB’s Control Builder software reduces commissioning time, while built-in diagnostics (open/short circuit detection) streamline troubleshooting.

Scalable Configuration: Supports 16 independently configurable channels, enabling mixed signal types (e.g., NPN/PNP) in a single module. This flexibility reduces the need for multiple modules, optimizing rack space.

Typical Application Scenarios

Safety Instrumented Systems (SIS): Monitors emergency stop buttons, flame detectors, and pressure switches in oil refineries, triggering shutdowns within 100 ms of hazardous events—critical for preventing explosions or chemical leaks.

Turbine Control in Power Plants: Tracks lube oil pressure switches, valve position limits, and fire suppression system statuses, feeding data to the DCS to coordinate protective actions (e.g., turbine trip) during anomalies.

Pharmaceutical Manufacturing: Monitors cleanroom access door interlocks and safety mat signals, ensuring compliance with GMP standards by halting processes if contamination risks are detected.

Marine LNG Operations: Interfaces with intrinsically safe (IS) sensors in Zone 1 hazardous areas to detect cryogenic leaks during loading/unloading, leveraging ATEX certification for safe operation in explosive environments.

Water/Wastewater Treatment: Monitors pump run/fail statuses and valve positions, integrating with SCADA systems to automate process control and alert operators to equipment faults.

Related Model Recommendations

CI840 3BSE041882R1: S800 I/O carrier module that hosts the DP840, supporting up to 12 I/O modules for scalable system design.

DO840 3BSE020838R1: 16-channel digital output module, complementary to the DP840 for control loops (e.g., activating relays or valves based on input signals).

AI845 3BSE008518R1: Analog input module for temperature, pressure, or flow signals, enabling mixed-signal monitoring in the same S800 rack.

TU810 3BSE008520R1: Terminal unit for field wiring, simplifying connections between sensors and the DP840 in harsh environments.

AC800M PM864AK1 3BSE018161R1: Controller that processes data from the DP840, executing safety logic and integrating with the 800xA DCS.

SD822 3BSC610068R1: Signal conditioner for converting 120VAC signals to 24VDC, expanding the DP840’s compatibility with legacy sensors.

ABB DP840 3BSE028926R1

Installation, Commissioning, and Maintenance

Installation: Mount the DP840 on a compatible carrier (e.g., CI840) with the S800 backplane power off. Use shielded twisted-pair cables for field connections, grounding shields at the module end. Torque terminal block screws to 0.5 N·m.

Commissioning: Power on the S800 rack and use ABB Control Builder to configure channel parameters (e.g., input type, filter settings). Validate communication with the AC 800M controller and test response times using a signal generator.

Maintenance: Inspect quarterly for loose connections and dust accumulation. Annually verify isolation resistance (>100 MΩ at 500VDC) using a megohmmeter. Replace via hot-swap: disable the module in software, release the locking lever, and extract horizontally.

Service and Guarantee Commitment

ABB provides a 36-month warranty for the DP840 3BSE028926R1, covering defects in materials and workmanship. Global support includes:

24/7 technical assistance via ABB Ability™ Collaborative Operations Centers.

On-site commissioning and calibration by certified engineers.

Lifetime firmware updates via Control Builder software.

SIL recertification services every 5 years to maintain compliance.

Priority replacement (next-business-day delivery) under extended service agreements.