ABB 086318-002 and 086318-501 I/O Modules – Genuine AC 800M CI854 Communication Interface Set!

Description

The ABB 086318-002   086318-501 are complementary components of the CI854A Profibus DP communication interface used in ABB’s AC 800M controller platform—a core element of the System 800xA distributed control system. Specifically, the ABB 086318-002 is the base module (printed circuit board assembly) that handles Profibus protocol processing, data exchange, and diagnostics, while the ABB 086318-501 is the detachable terminal block that provides screw-type field wiring connections for the RS-485 Profibus network. Together, they enable the AC 800M to act as a Profibus DP master or slave, connecting seamlessly to remote I/O stations, drives, valves, and legacy field devices across industrial plants.

Designed for high availability and electromagnetic resilience, the ABB 086318-002 supports baud rates up to 12 Mbps and can manage up to 126 Profibus nodes per segment. Its integration into the AC 800M’s redundant architecture allows for fault-tolerant communication in critical applications such as power plant boiler control or compressor sequencing. The modular design—separating electronics (086318-002) from field wiring (086318-501)—simplifies maintenance and reduces downtime during terminal replacement or reconfiguration. This pairing exemplifies ABB’s commitment to flexible, future-proof automation infrastructure, where the ABB 086318-002 and 086318-501 serve as reliable gateways between modern controllers and established field networks.

086318-002 086318-501 ABB

Technical Specifications

Main Features and Advantages

Robust industrial communication with full isolation:
The ABB 086318-002 features galvanic isolation between the controller logic and the Profibus field network, protecting the AC 800M CPU from ground loops, surges, and electrical noise common in motor control centers or switchyards. The 086318-501 terminal block includes a dedicated shield connection to further enhance EMI immunity—ensuring stable data transmission even in high-interference environments.

Hot-pluggable and service-friendly design:
Field wiring remains intact on the ABB 086318-501 terminal block while the 086318-002 base module can be replaced without disconnecting cables. This modularity drastically reduces mean time to repair (MTTR) and eliminates wiring errors during maintenance—a key advantage over monolithic communication cards.

Seamless integration with System 800xA engineering tools:
Using ABB’s Control Builder M software, engineers can configure the ABB 086318-002 as a Profibus DP master to scan remote I/O (e.g., ABB TU830/TU831) or as a slave to integrate the AC 800M into a higher-level PLC network. GSD files are included for interoperability with third-party devices from Siemens, Rockwell, and others.

Support for redundant and high-availability architectures:
When deployed in a redundant AC 800M setup, dual 086318-002 modules can provide failover communication paths, ensuring continuous process visibility even if one Profibus segment fails—critical for nuclear, hydro, or LNG facilities.

Long lifecycle and global support:
Despite being part of a mature product line, ABB continues to supply the 086318-002 and 086318-501 due to their widespread use in brownfield upgrades. Their compatibility with both legacy and modern System 800xA versions makes them a strategic spare for plants delaying full digital transformation.

Application Field

The ABB 086318-002 and 086318-501 are widely used in industries requiring reliable, standardized field communication between central controllers and distributed assets. In thermal and combined-cycle power plants, they connect the AC 800M to boiler feedwater pumps, damper actuators, and flue gas analyzers via Profibus—enabling centralized monitoring without extensive hardwiring. The 086318-501 terminal block’s rugged screw terminals withstand constant vibration near turbines, while the 086318-002 ensures deterministic data exchange during load-following operations.

In oil & gas upstream and midstream facilities, the pair links the control system to remote wellhead RTUs, separator level controls, and compressor anti-surge valves. Because Profibus DP supports long cable runs (up to 1,200 meters at 187.5 kbps), the ABB 086318-002 reduces the need for local marshalling cabinets—lowering CAPEX in offshore platforms or pipeline pump stations.

Similarly, in mining and mineral processing, the ABB 086318-002 interfaces with conveyor drive inverters, crusher position sensors, and slurry density meters. The ability to daisy-chain dozens of devices over a single twisted-pair cable simplifies installation in dusty, corrosive environments. Across all these sectors, the combination of the ABB 086318-002 base module and 086318-501 terminal block delivers a cost-effective, maintainable, and standards-compliant communication backbone that bridges decades of automation evolution.

086318-002 086318-501 ABB

Related Products

CI854A: Functional name for the 086318-002/086318-501 assembly in ABB documentation
086318-003: Alternate base module for fiber-optic Profibus (requires different terminal block)
TU830: ABB Profibus remote I/O module often connected via 086318-002
PM864A: AC 800M CPU that typically hosts the 086318-002 communication card
TB854: Alternative terminal base for other CI854 variants (not compatible with 086318-501)
086319-001: Redundant Profibus module (dual-port) for high-availability applications
3BSE018217R1: Updated firmware-compatible revision of 086318-002