Description
‑ Power Supply：Supplied by S800 rack back‑plane 24 VDC；typical power consumption 5.2 W
‑ Mechanical Structure：standard S800 I/O rack plug‑in module；weight approx 0.50 kg
‑ On‑board Resources：PROFIBUS DP‑V1 protocol processing unit, dual‑channel bus driving circuit, data buffer memory, internal ModuleBus interface, module self‑diagnosis circuit
‑ Communication Interface：internal ModuleBus bus for data interaction with S800 I/O modules；two D‑Sub9 PROFIBUS DP‑V1 external bus interfaces for redundancy
‑ Galvanic Isolation：galvanic isolation between PROFIBUS field‑bus side and internal ModuleBus logic side, isolation rating 2500 VAC
‑ Core Function：PROFIBUS DP‑V1 slave‑station protocol processing, dual‑cable bus redundancy, cyclic I/O data transmission, DP‑V1 acyclic parameter access, HART pass‑through, hot‑configuration in run, hardware and channel fault diagnosis
‑ Protection：bus‑port surge‑suppression and ESD protection
‑ Status LED Indicators：Power indicator, Module Fault indicator, PRIM、DUAL, PROFIBUS bus communication status LED
‑ Weight：approx 0.50 kg
‑ Installed in S800 I/O standard rack, communicates with S800 series I/O modules via rack internal ModuleBus, operates as PROFIBUS DP‑V1 slave node, supports dual‑cable PROFIBUS bus redundancy, automatically switches between primary and standby bus channel when main cable fails, improves field communication reliabilityeero.
‑ Supports PROFIBUS baud rate from 9.6 kbit/s up to 12 Mbit/s. Cyclically uploads field input signals collected by S800 I/O modules to PROFIBUS master station, receives output control commands from master station and distributes to corresponding S800 output modules. Supports DP‑V1 acyclic service for parameter configuration and fault diagnosis access, realizes HART signal transparent transmission, supports hot‑configuration in run without stopping cluster operation.
‑ Built‑in data buffer improves bus transmission stability, provides abundant diagnostic information including bus short‑circuit, station address error, module hardware failure, channel fault.
‑ Module self‑diagnosis monitors back‑plane power‑supply and on‑board hardware integrity; detects hardware fault and bus‑off fault, reports fault status through LED indicator and PROFIBUS diagnostic message.
‑ Cannot run independently; must cooperate with S800 I/O rack and S800 series I/O modules. CI840A 3BSE041882R1 is dedicated redundant PROFIBUS DP‑V1 slave communication board, cannot be substituted by general‑purpose PROFIBUS communication modules.
‑ Continuously monitors rack power‑supply and module hardware running state. Fault will activate panel fault LED, fault information can be read through PROFIBUS diagnostic message.
‑ No local historical‑data storage; module status and fault codes need to be read through Control Builder configuration‑monitoring tool.
‑ Module hardware failure will cause S800 I/O cluster lose PROFIBUS bus communication; all I/O signals under this CI840A cluster cannot complete data interaction with PROFIBUS master‑station equipment.
‑ Back‑plane connector: inserts into S800 I/O rack slot, connects to internal ModuleBus of S800 I/O cluster.
‑ External dual D‑Sub9 connectors: connect redundant PROFIBUS shielded bus cables to PROFIBUS DP master‑station device.
‑ Mounting：insert into S800 I/O standard rack slot
‑ Operating Temperature：‑20 ℃ ~ +60 ℃
‑ Storage Temperature：‑40 ℃ ~ +85 ℃
‑ Relative Humidity：5‑95 %RH, non‑condensing
‑ Protection Class：IP20, cabinet‑internal installation.
- CI840A Redundant PROFIBUS DP‑V1 communication interface module（3BSE041882R1）
Complementary parts: S800 I/O rack, S800 series I/O modules, PROFIBUS DP shielded communication cables, PROFIBUS DP master‑station controller, Control Builder configuration monitoring tool.
‑ Cut off control cabinet auxiliary power before inserting or replacing this module. Set PROFIBUS slave station address according to site network requirements, use standard PROFIBUS shielded cables, install terminal resistor at both ends of PROFIBUS bus trunk. Baud rate setting must keep consistent with PROFIBUS master station, configure redundancy parameters according to field dual‑cable layout requirements.
‑ For spare‑part replacement: verify full model CI840A and part‑number 3BSE041882R1; after installation check back‑plane power‑supply, verify cyclic data interaction between S800 I/O cluster and PROFIBUS DP master‑station. Hardware‑version mismatch will bring risk of bus communication parsing abnormality.
‑ Module fault will result in total communication failure of corresponding S800 I/O cluster on PROFIBUS network.
Power, petrochemical, metallurgy old‑set AC800M /800xA DCS control cabinets; ABB S800 I/O system maintenance and spare‑part replacement; industrial spare‑part for redundant PROFIBUS DP‑V1 slave‑station communication gateway unit.
- S800 I/O dedicated CI840A redundant PROFIBUS DP‑V1 communication interface module (3BSE041882R1), realizes S800 distributed I/O working as PROFIBUS DP‑V1 slave node for data interaction with external DP master‑station, supports dual‑cable bus redundancy.
- Supports full‑range PROFIBUS baud rate, supports DP‑V1 acyclic diagnosis, HART pass‑through and hot‑configuration in run functioneero.
- Bus‑port galvanic‑isolation design, restrains field‑site electromagnetic interference and protects S800 I/O internal circuit.
- Rich on‑board diagnostic function, convenient for field fault location and troubleshooting.
- Standard S800 rack plug‑in structure, convenient cabinet installation and spare‑part swapping.
- Legacy discontinued DCS spare‑part, only applied for old‑system maintenance and retrofit projects。
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