Description
At-A-Glance Executive Brief
- Model: CI854AK01 (Order code 3BSE030220R1), Brand: ABB
- Part Type: PROFIBUS DP-V1 Master Communication Module, requires TP854 baseplate
- Lifecycle status: OEM obsolete, limited new surplus inventory available
- Compatible hardware: AC 800M PM856 PM861 PM864 PM868 Controllers
- Supported protocol: PROFIBUS DP / DP-V1 master with line redundancy capability
Technical Introduction (Structure B Selected)
CI854 connects the AC 800M controller CEX-bus to field PROFIBUS DP networks.This interface module facilitates cyclic process data exchange and acyclic service communication with remote field nodes including S800 I/O stations, variable frequency drives and third-party protection relays. The dual-port TP854 baseplate supports redundant PROFIBUS cabling. Cable faults on one communication path will trigger automatic switchover to the secondary link to maintain continuous data transfer to field equipment.
Engineer’s TakeawayThe module removes the need for external protocol converters on legacy 800xA sites, though physical pairing with matching TP854 hardware is mandatory for proper bus termination and signal integrity.
Core Technical Specifications
| Parameter | Value |
|---|---|
| Full Order Code | CI854AK01 / 3BSE030220R1 |
| Host Bus | CEX-bus (AC800M rack internal bus) |
| Communication Protocol | PROFIBUS DP-V1 Master Class 1 / Class 2 |
| Interface Ports | 2 × DB9 via TP854 baseplate |
| Supported Baud Rates | 9.6 kbps up to 12 Mbps |
| Maximum Addressable Slaves | 124 nodes total system limit |
| Hot Swap Support | CI854AK01 supports hot swapping; base CI854 variant does not |
| Mounting | DIN rail assembly (Module + TP854 baseplate) |
| Power Source | Powered via rack CEX-bus, no separate 24V supply required |
ABB CI854A 3BSE030220R1
Operating temperature ranges and humidity limits can be found in the official ABB hardware datasheet.
Field Engineer’s Tech Notes
- Do not interchange CI854, CI854A and CI854B units. CI854B uses updated internal firmware and cannot operate as a drop-in replacement for older CI854AK01 inside existing AC800M racks without controller firmware upgrades.
- PROFIBUS line redundancy relies on correctly activated bus termination resistors at each physical segment endpoint. Missing termination creates signal reflection leading to intermittent slave dropouts under high electrical noise conditions.
Adaptive QA & Testing Protocol
Each assembly is bench-tested on a physical AC800M controller rack paired with baseplate. Verification includes successful hardware identification within Control Builder M, PROFIBUS DP node handshake simulation, continuous cyclic data transmission checks across both communication ports, and LED status validation under normal and simulated cable fault conditions. Full test screenshots or short testing video can be supplied on request before shipment.
ABB CI854A 3BSE030220R1
Buyer’s FAQ
Q: Is this unit a direct replacement for existing hardware running on System 800xA?A: works as a direct physical replacement for legacy CI854A hardware. Confirm your controller firmware revision before ordering if upgrading from non-A variants.
Q: Does the listing include the baseplate?A: Baseplate availability varies by stock batch. Confirm package contents prior to order placement. The module cannot operate without matching hardware.
Q: What warranty coverage applies to surplus modules?A: All tested units carry a standard 12-month warranty. Damage caused by incorrect wiring, static discharge or improper hot swap operation is excluded.
Q: Can this master module communicate with ACS800 drives fitted with RPBA-01 adapters?A: Yes. Standard PROFIBUS DP cyclic communication between and RPBA-01 drive adapters is fully supported.
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