Description
At-A-Glance Executive Brief
- Model: CI854BK01 (Article No: 3BSE069449R1)
- Brand: ABB
- Part Type: PROFIBUS DP-V1 Master communication interface module (package includes CI854B module + TP854 baseplate)
- Lifecycle status: Active / widely stocked spare for ABB System 800xA AC800M DCS; for brownfield plant maintenance & system expansion
- System compatibility: ABB AC800M controller, CEX bus, System 800xA; acts as PROFIBUS DP-V1 master to connect S800 remote I/O, variable speed drives, field transmitters and PROFIBUS slave devices, exchanging process data between fieldbus and DCS controller
- Weight: ~0.7 kg
Technical Introduction
Failure of CI854BK01 interrupts PROFIBUS DP-V1 fieldbus communication between AC800M controller and all PROFIBUS slave field devices. All S800 I/O, drives and field instrument data will be lost; DCS shows bad quality tags, control loops drop out, alarms and interlocks may be affected, leading to process disruption or plant downtime.
ABB CI854BK01 (CI854B) is a high-performance PROFIBUS DP-V1 master interface for ABB System 800xA AC800M controllers. It features two independent PROFIBUS RS485 ports supporting line redundancy, and also supports module-level master redundancy paired with a second CI854BK01. It connects to the controller CEX bus via TP854 baseplate. The module runs as PROFIBUS DP-V1 Class 1 master, supporting baud rates from 9.6 kbit/s up to 12 Mbit/s, with up to 125 slave devices per bus. It handles cyclic process I/O exchange, acyclic parameter access and diagnostics for PROFIBUS slaves including S800 I/O, VFDs, motor starters and field instruments. CI854BK01 supports hot swap, allowing module replacement without controller shutdown. It is RoHS compliant, upgraded successor to older CI854AK01. Widely used in oil & gas, pulp & paper, power and chemical plants running ABB 800xA DCS. Plant reliability teams stock CI854BK01 for fast recovery of PROFIBUS fieldbus networks.
- Best Suited For
- ABB AC800M / System 800xA DCS PROFIBUS DP-V1 fieldbus master connections
- Redundant PROFIBUS line / master networks, S800 I/O and PROFIBUS drive/instrument integration
- Direct drop-in replacement for existing ABB CI854BK01 PROFIBUS communication interface hardware
Core Technical Specifications
| Parameter | Value |
|---|---|
| Part Number | CI854BK01, 3BSE069449R1 |
| Manufacturer | ABB |
| Product Type | PROFIBUS DP-V1 Master Communication Interface (CI854B + TP854 Baseplate) |
| Controller Platform | AC800M, System 800xA |
| Protocol | PROFIBUS DP-V1 (Class1 Master) |
| Ports | 2 × RS485, 9-pin D-sub female |
| Baud Rate | 9.6 kbit/s ~ 12 Mbit/s |
| Max Slaves | 125 slaves per PROFIBUS segment |
| Redundancy | PROFIBUS line redundancy + module master redundancy supported |
| Hot Swap | Yes |
| CEX Bus | Connects to AC800M CEX bus |
| Power Supply | 24VDC, typical 190mA |
| Operating Temp | +5℃ ~ +55℃ |
| Humidity | 5–95% RH non-condensing |
| Mounting | DIN rail via TP854 baseplate |
| Weight | ~0.7 kg |
| Environmental Details | Please refer to the OEM datasheet for complete environmental tolerances. |
Field Engineer’s Tech Notes
- Confirm AC800M firmware, CEX bus configuration, PROFIBUS GSD files and redundancy scheme before replacement; mismatched GSD or bus parameters cause slave communication failures.
- Implement process bypass and lockout/tagout for affected control loops before module removal. CI854BK01 supports hot swap, but always evaluate process risk before live removal.
- Inspect PROFIBUS bus cables, terminators, bus ground and D-sub connectors; poor bus termination is the top root cause of intermittent PROFIBUS faults.
- After installation, download hardware configuration, scan PROFIBUS slave devices, verify cyclic I/O data, check device diagnostics, confirm redundant bus switchover function, clear communication faults and remove bypass before returning loops online.
- ESD protection required while handling module and baseplate.
- Periodically check bus terminators and cable integrity; RS485 bus noise and termination drift are common degradation modes.
Adaptive QA & Testing Protocol
Each CI854BK01 module is bench tested on ABB AC800M / 800xA test rack. We verify 24VDC power-up, CEX bus handshake, dual PROFIBUS port operation, full range baud rate testing, slave device scanning and cyclic data exchange. Redundant line switchover, diagnostics and hot-swap function are validated. Module, baseplate, D-sub connectors and PCB are visually inspected for corrosion, scratches or component damage. Full test reports are available upon request.
Buyer’s FAQ
Q: What is ABB CI854BK01 used for? A: It is a PROFIBUS DP-V1 master communication interface for ABB AC800M / System800xA DCS, connecting the controller to PROFIBUS slaves such as S800 I/O, drives and field instruments, with dual-port line redundancy.
Q: What warranty applies for refurbished and NSFP CI854BK01? A: Refurbished and NSFP units carry a 12-month hardware warranty. Coverage excludes ESD damage, PROFIBUS bus surge damage, GSD/configuration mismatch, incorrect bus termination and improper hot-swap operation.
Q: What lead time should I expect? A: Stocked units ship 3–7 business days. If inventory depleted, we source surplus ABB CI854BK01 modules.
Q: Can CI854BK01 be hot swapped? A: Yes, hot swap is supported. However process bypass must be applied for affected control loops before removal.


