Basic Info
- Model: CI858
- Part No.: 3BSE018136R1
- Manufacturer: ABB (Sweden)
- Type: DriveBus Communication Module (Master)
- System: AC 800M, 800xA
- Dimensions: 59 × 185 × 127.5 mm (W×H×D)
- Weight: 0.7 kg (with baseplate)
- Certifications: CE, UL, cUL, RoHS, WEEE, Marine (ABS, BV, DNV-GL, LR)
- Protection: IP20, Corrosion G3 (ISA 71.04)

Key Specs
- Protocol: ABB DriveBus
- Role: Master
- Interface: Optical Fiber
- Speed: 8 Mbit/s
- Max Drives: 24 per module
- Max Modules per Controller: 2
- Power: CEX-Bus (24V DC)
- Power Consumption: 200 mA typical @ 24V DC
- Temp Range: +5°C to +55°C (operating); -40°C to +70°C (storage)
- Hot Swap: Supported
- Topology: Physical star / Logical bus (with NDBU branching unit)
Core Features
- DriveBus Optimization: Tailored for ABB drives, ensuring low latency and high reliability for motion and tension control.
- Fiber Optic Communication: EMI-free, long-distance transmission for harsh industrial environments.
- Scalability: Connect up to 24 drives per module; dual-module redundancy for AC 800M controllers.
- Hot Swap & Diagnostics: Maintenance without downtime; LED status indicators for quick fault identification.
- Seamless Integration: Native compatibility with 800xA/AC 800M via CEX-Bus.
Applications
- Metallurgy: Rolling mills, multi-roll synchronization, tension control.
- Paper & Pulp: Machine sectional drives, speed synchronization.
- Textile/Printing: High-speed multi-axis sync, tension control.
- Plastics/Rubber: Extruders, calenders, synchronous drives.
- Marine: Certified for ship propulsion and deck machiner.

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