ABB CI871A AC 800M PROFINET IO Communication Interface Module
Configured for PROFINET IO master data exchange in ABB AC 800M controller systems, the ABB CI871A (CI871A Communication Interface Module) provides direct physical/electrical execution. It interfaces to Ethernet media via the TP867 baseplate CH1 RJ45 connector operating at 100 Mbps. Power distribution routes internally from the +24 VDC CEX-Bus backplane through an integrated DC/DC converter. The unit requires System 800xA software version 6.0.3.3, 6.1.1, or higher for execution.
Suffix Breakdown & Model Matrix
| Base Model / Option | Catalog / Article Number | Function |
|---|---|---|
| CI871A | 3BSE092693R1 | PROFINET IO Communication Interface Module |
| TP867 | System Accessory | Baseplate with 2 x RJ45 Connectors (CH1 active for PROFINET IO) |
Hardware Specifications
| Parameter | Specification |
|---|---|
| Model | CI871A |
| Brand | ABB |
| Article Number | 3BSE092693R1 |
| Origin | Sweden |
| Weight | 700 g (1.5 lbs) including baseplate |
| Dimensions | 59 mm x 185 mm x 127.5 mm (2.3 in x 7.3 in x 5.0 in) |
| Operating Temp | 0 to +55 deg C (+32 to +131 deg F) |
| Power Consumption | 24 VDC, typ. 160 mA |
| Protocol | PROFINET IO Master |
| Transmission Speed | 10/100 Mbit/s |
| Line Redundancy | No |
| Module Redundancy | Yes |
| Hot Swap | Yes |
| Max Units on CEX Bus | 12 |
| Protection Class | IP20 |
| Hazardous Location Class | Class 1, Zone 2, AEx nA IIC T4, Ex nA IIC T4 Gc X |
| ISA Corrosion Class | ISA 71.04 G3 compliant |
Control Backplane Integration and Ethernet Connectivity
The CI871A module communicates directly across the AC 800M CEX-Bus system, drawing operational power and managing backplane bus communication velocity with deterministic throughput. Grounding planes and internal logic circuits maintain isolation from transient bus noise, preventing signal corruption across adjacent expansion units. Ethernet traffic routes exclusively through an external industrial switch to interface with remote PROFINET IO subnets, maintaining fixed frame timing across deterministic networks.
Frequently Asked Questions
Q: Can the secondary RJ45 connector on the TP867 baseplate be configured for network redundancy?
A: No. The TP867 baseplate provides two physical RJ45 ports, but only the CH1 interface supports 100 Mbps communication required for PROFINET IO master operations.
Q: What are the requirements for hot-swapping the CI871A module during system operation?
A: Hot swap operations require an active online CEX-Bus configuration. Removing the module under power disconnects active PROFINET IO communication channels, but backplane power limits protect the remaining bus nodes from voltage drop or current spikes.
Q: Is the CI871A backward compatible with System 800xA version 5.1?
A: No. The hardware logic and firmware architecture require System 800xA version 6.0.3.3, 6.1.1, or subsequent releases for functional driver recognition and bus mapping.
Field Installation Guidelines
Mount the TP867 baseplate onto the standard DIN rail prior to inserting the CI871A module. Ensure that the CEX-Bus side connectors lock firmly into adjacent slots to maintain ground continuity and proper DC voltage distribution.
Connect shielded twisted-pair (STP) Category 5e or Category 6 Ethernet cabling exclusively to port CH1 on the TP867 baseplate. Route the cable directly to an industrial-grade Ethernet switch. Terminate cable shielding directly to the panel earth ground using low-impedance grounding clamps to mitigate electromagnetic interference in Class 1, Zone 2 environments. Maintain adequate clearance above and below the module housing to allow natural convective cooling within ambient limits up to +55 deg C.
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