Description
ABB CI520V1
- Technical Specifications:
- Bus Type: ABB Advant Fieldbus / MasterFieldbus (serial, token-passing / master-slave hybrid)
- Connection: D-sub 9-pin or screw terminals (depending on baseplate)
- Baud Rate: Typically 187.5 kbps or 500 kbps (protocol-specific)
- Max Nodes: Up to 32–122 depending on topology and firmware
- Isolation: Galvanic isolation on bus lines
- Power: From controller backplane (5 V / 24 V DC)
- Operating Temp.: 0 °C to +60 °C
- Mounting: Slot in Advant controller rack
- Functional Features:
- Transparent data exchange between controller and field devices
- Supports HART pass-through (when used with HART-capable I/O)
- Diagnostics for bus errors, node timeouts, CRC failures
- Hot-swap capable in redundant controller pairs
- Application Scenarios:
- Connecting Advant OCS CPUs to S800 I/O via FCI (Fieldbus Communication Interface)
- Linking ABB drives with DriveBus over Advant Fieldbus
- Legacy plant expansions maintaining AF100 network compatibility
- Material & Structure:
- PCB with ESD-protected transceivers, housed in standard Advant module casing
- Gold-plated backplane edge connector
- Working Principle:
The CI520V1 acts as the bus master, initiating cyclic data exchanges with each configured slave node on the Advant Fieldbus. Process data is mapped into the controller’s I/O image table and updated every scan cycle; acyclic services handle parameter upload/download and diagnostics.
- Installation Requirements:
- Install in designated communication slot of Advant controller or extender rack
- Terminate both ends of the fieldbus with proper termination resistors (typically 220 Ω)
- Use screened twisted-pair cable, shield grounded at one end (usually controller side)
- Precautions:
- Do NOT mix terminator resistors with active repeaters incorrectly — may cause reflection issues
- Verify node address DIP-switch settings on each slave before bus commissioning
- Avoid routing fieldbus cable in same tray as high-power AC or VFD output cables
