Description
1. Product Description
The CI854A serves as a bridge between Profibus-DP/V1 networks and ABB control systems, facilitating real-time data exchange for monitoring and control. Its key functions include protocol conversion, redundant communication support, and compatibility with devices like the S800 I/O system. The module supports Profibus-DP/V1 and Profibus PA (via the LD 800P linking device), making it versatile for diverse industrial setups. Its rugged design ensures operation in extreme conditions (e.g., high/low temperatures, strong magnetic fields), while easy configuration tools simplify integration into existing systems.
2. Product Parameters
| Parameter | Specification |
|---|---|
| Communication Protocol | Profibus-DP/V1, Profibus PA (via LD 800P) |
| Data Rate | Up to 12 Mbps |
| Power Supply | 24 VDC (190 mA typical consumption) |
| Interfaces | 9-pin DB female (Profibus A/B connectors) |
| Redundancy Support | Master redundancy (dual CI854A modules), CPU/CEX bus redundancy |
| Max Units on CEX Bus | 12 |
| Operating Temperature | 5–55°C (41–131°F) |
| Storage Temperature | -40–70°C (-40–158°F) |
| Humidity | 5–95% (non-condensing) |
| Certifications | CE, Marine (BV, DNV-GL, LR, RS, CCS), RoHS compliant |
| Physical Dimensions | 185 mm (H) × 59 mm (W) × 127.5 mm (D) |
| Weight | 700 g |
ABB CI854A
3. Advantages and Characteristics
- High-Speed Reliability: Supports 12 Mbps data transmission for real-time control in demanding applications.
- Redundancy Features: Enables master redundancy (dual modules) and system-level redundancy (with BC 810), ensuring uninterrupted operation.
- Modular Design: DIN rail mountable for easy installation and scalability.
- Environmental Resilience: Operates in harsh conditions (IP20 protection, wide temperature range).
- Flexible Connectivity: Integrates with Profibus PA via the LD 800P, expanding compatibility with field instruments.
- Cost-Effective: Balances performance and affordability, ideal for large-scale industrial projects.
4. Application Fields and Cases
The CI854A is widely used in industries such as:
- Oil & Gas: Monitoring pumps and compressors in offshore platforms.
- Chemical: Controlling reactors and distillation units.
- Metallurgy: Managing conveyor systems and furnaces.
- Water Treatment: Coordinating sensors and actuators in purification plants.
Case Study: A petrochemical plant in the Middle East used CI854A modules to integrate 50+ remote I/O units and sensors across a distributed network. The module’s redundancy and high-speed communication ensured seamless monitoring of critical processes, reducing downtime by 20%.
5. Competitor Comparison
Compared to similar Profibus-DP modules, the CI854A stands out with:
- Dual Redundancy: Supports both master and system-level redundancy, unlike many single-redundancy alternatives.
- Wide Protocol Support: Native Profibus-DP/V1 and PA compatibility without additional gateways.
- Compact Design: Space-saving form factor for modular control cabinets.
ABB CI854A
6. Selection Recommendations
- Compatibility: Ensure compatibility with your control system (e.g., AC 800M, S800 I/O).
- Redundancy Needs: Choose dual CI854A modules for critical applications requiring fault tolerance.
- Environment: Verify temperature/humidity ranges match your installation site.
- Scalability: Plan for future expansions (supports up to 12 CEX bus units).
7. Precautions
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Grounding: Ground the shielded Profibus cable at one end to avoid potential loops (per manual guidelines).
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Termination: Enable bus termination only at the network’s end node.
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Redundancy Setup: Configure primary/backup modules with redundant cables for failover resilience.
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Installation: Follow ABB’s DIN rail mounting instructions and ensure proper ventilation.
