Overview
Configured for Ethernet fieldbus communication in ABB Ability System 800xA, the ABB CI845 3BSE075853R1 (base model CI845 Ethernet FCI Module) provides direct physical and electrical execution between AC 800M controllers and S800 I/O or Select I/O subsystems.
Hardware Specifications
| Parameter | Specification |
|---|---|
| Model Brand | ABB CI845 3BSE075853R1 |
| Origin | Sweden |
| Weight | 0.5 kg |
| Dimensions | 18.5 x 6.5 x 12.6 cm |
| Operating Temp | -40 degC to +70 degC |
| Storage Temp | -40 degC to +85 degC |
| Relative Humidity | 5 to 95 %, non-condensing |
| Power Dissipation | 5 W |
| Input Voltage Range | 19.2 to 30 VDC |
| Tariff Code | 8537101190 |
Backplane Bus Communication Velocity Licences
The CI845 utilizes deterministic backplane bus protocols to maintain low-latency data exchange between the AC 800M controller and distributed I/O nodes. Communication performance is bound to licensed firmware profiles which define maximum throughput rates and supported redundancy modes. Unauthorized firmware versions will restrict operational bandwidth and inhibit redundant pair synchronization.
Frequently Asked Questions
Q: What is the hot-swap limitation for CI845 modules?
A: Hot-swap insertion is permitted only when the associated MTU is powered down or during controlled maintenance cycles; live replacement may cause backplane communication disruption.
Q: Does redundant configuration require identical firmware revisions?
A: Yes. Both CI845 units in a redundant setup must run identical firmware builds to ensure deterministic failover and data integrity.
Q: Are CI845 modules compatible with third-party Ethernet adapters?
A: No. Only ABB TC810 Ethernet adapters and TU860/TU865 MTUs are supported for full protocol compliance and electrical isolation.
Field Installation Guidelines
Mount the CI845 into the designated MTU using correct DIN rail alignment. Ensure shielded Ethernet cabling is grounded at one termination point to prevent ground loops. Maintain separation between power and communication cables to minimize EMI coupling. Verify all connector locking tabs are fully engaged before energizing the system.
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