1. Core Technical Parameters

Backplane Supply：24 VDC

Communication Standard：PROFIBUS DP Master

Max Connected Slave Nodes：125

Supported Baud Rate：9.6 kbps – 12 Mbps

Galvanic Isolation Grade：2500 VAC

Working Temperature：-20℃ ~ +70℃

Matching Controller Rack：AC800M series backplane

2. Compatibility & Expandability

Same-brand Compatibility

ABB CI855K01 is high-performance PROFIBUS master interface card for ABB AC800M distributed control platform. Process automation engineers install multiple ABB CI855K01 on cabinet backplanes to build multi-redundant fieldbus networks for chemical and energy production lines. ABB CI855K01 inserts dedicated single-width rack slots and transmits deterministic process data with ABB PM856AK01 CPU units and all S800 analog/digital I/O modules without auxiliary signal conversion terminals. Front panel DIP switch configuration maintains stable cyclic data exchange between ABB CI855K01 and on-site ABB transmitters and frequency converters.

Cross-brand Compatibility

Exclusive AC800M internal backplane bus protocol blocks direct hardware interconnection of ABB CI855K01 to third-party control hosts. Independent protocol conversion gateways are required to establish data transmission links connecting ABB CI855K01 with Siemens or Schneider PLC equipment. Globally unified PROFIBUS DP industry standard allows ABB CI855K01 to collect measurement signals from most aftermarket field sensors with no internal circuit refitting.

3. Lifecycle Cost Analysis

Service cycle of ABB CI855K01 covers 10 years, exchange rate:1USD=7.2CNY, purchase and installation costs are excluded from all cost statistics

Annual routine maintenance cost: PROFIBUS bus signal calibration and internal dust clearance for ABB CI855K01 costs 36 USD per year, total 10-year maintenance expense: 360 USD

Spare part replacement cost: Main bus transceiver chip breakdown of ABB CI855K01 generally occurs once every 7 years, single spare module price: 462 USD, total replacement expense within 10 years: 462 USD

Retrofit expense saving: Original cabinet cable routing fully fits ABB CI855K01 during control system modernization, saving 292 USD extra construction labor cost compared with incompatible substitute PROFIBUS master cards

Total cumulative running cost for single ABB CI855K01 across ten service years: 530 USD