Product Details
Description
The CI840A-EA is the main intelligence unit for S800 I/O stations, managing up to 12 modules via the ModuleBus. It converts fieldbus commands into local I/O actions and reports process data to the master controller. Supporting PROFIBUS DP-V1, it enables advanced diagnostics and remote configuration, making it ideal for critical oil and gas, pharmaceutical, and power applications.
Specifications
-
Manufacturer: ABB
-
Country of Origin: Sweden
-
Model Number: CI840A-EA (3BSE041882R1)
-
Protocol: PROFIBUS DP-V1
-
Baud Rate: Auto-detecting up to 12 Mbit/s
-
I/O Capacity: Supports up to 12 S800 modules per station
-
Redundancy: Full 1:1 redundancy support when paired
-
Input Power: 24 VDC nominal
-
Current Consumption: 160 mA typical
-
Galvanic Isolation: Integrated system-to-field isolation
Features
-
Redundant Fault Tolerance: Optimized for paired operation to eliminate single points of failure in the communication backbone.
-
Smart Device Integration: Supports DP-V1 acyclic services, enabling deep diagnostic access to HART-compatible devices through the I/O rack.
-
Deterministic Performance: Provides high-speed data processing and low-latency throughput for demanding real-time control loops.
-
Dynamic Module Supervision: Automatically detects, initializes, and monitors the health of all connected analog and digital units in the cluster.
-
Live Module Replacement: Supports hot-swapping functionality, allowing for the maintenance of individual I/O modules without halting the station bus.
-
Hardened Industrial Design: Built to withstand harsh electromagnetic conditions and a wide operating temperature range in industrial cabinets.
Additional Information
- 100% Genuine Parts: All products are original and authentic, ensuring reliable industrial performance.
- 30-Day Refund Guarantee: Return any in-stock item within 30 days in original, unopened packaging for a full refund (excluding shipping and fees).
- 12-Month Warranty: Covers defects in materials or workmanship; excludes misuse, normal wear, or unauthorized modifications.
- Worldwide Shipping: We ship via USPS, UPS, FedEx, and DHL. Delivery times vary by country and may be subject to customs or import fees.
- Support & Contact: Technical and warranty assistance is available anytime. Contact us here: Contact.
- Purchase Guidance: Check product specifications and compatibility carefully before ordering to ensure proper application.
Tech & Buying Guide
Redundant Automation Systems: Core Architecture, Business Value, and Technical Advantages
Unplanned downtime poses a major financial threat to process manufacturing. To prevent costly interruptions, engineers deploy redundant PLC and DCS architectures that ensure continuous operation when hardware fails. This technical guide explores redundancy principles, critical system nodes, and real-world scenarios.
Preventing Emergency Stop Spurious Trips in Industrial Control Systems
Emergency Stop pushbuttons use Normally Closed contacts for fail-safe safety, but mechanical wear can cause costly spurious trips. This technical guide examines E-Stop contact failure root causes, redundant hardware setups, PLC logic monitoring, and maintenance strategies to maximize plant availability.
Why 24V DC Is the Universal Standard for Industrial Automation Power Supplies
Industrial manufacturing requires continuous uptime to prevent equipment damage. Unlike AC power, 24V DC circuits seamlessly integrate with UPS units and battery banks. During main grid failures, a 24V DC backup system instantly maintains PLC memory, instrument loops, and critical safety valves without interruption.