Description
ABB AI890 Analog Input Module
The ABB AI890 is a high-performance 8-channel Analog Input Module designed for the S800 I/O system. It is specifically engineered for Intrinsic Safety (IS) applications, making it a critical component for process automation in hazardous areas.
Product Detailed Description
The AI890 module interfaces between hazardous area field sensors and the safe area control system (such as ABB Ability™ System 800xA). It includes built-in intrinsic safety barriers, eliminating the need for external third-party barriers when connecting to sensors located in Zone 0, 1, or 2.
Each of its 8 channels is individually isolated and designed to receive standard 4–20 mA signals from 2-wire or 3-wire transmitters.
Technical Parameters
| Parameter | Specification |
| Product ID | 3BSE013284R1 |
| Number of Channels | 8 |
| Input Type | 4 to 20 mA (Analog) |
| A/D Resolution | 12 bits |
| Intrinsic Safety | Yes (Built-in barriers for hazardous areas) |
| Input Impedance | Typ. 250 \Omega |
| Isolation | Galvanic isolation (Channel-to-Channel & Channel-to-System) |
| Power Dissipation | Max 3.5 W |
| Update Time | \le 100 ms (for all 8 channels) |
| Temperature Range | 0°C to +55°C (Operating) |
Product Advantages
- Integrated Safety: Built-in IS barriers save significant space in control cabinets and reduce wiring complexity compared to using separate external barriers.
- High Reliability: Features comprehensive self-diagnostics that monitor the health of the module and the integrity of the field loops.
- HART Pass-through: Supports HART communication, allowing maintenance personal to perform remote configuration and diagnostics on smart field instruments through the control system.
- Hot-Swappable: Supports “Hot Configuration in Run” (HCIR) and can be replaced while the system is powered (when used with a compatible MTU), ensuring zero process downtime.
Important Considerations & Precautions
- MTU Compatibility: The AI890 must be mounted on a specific Termination Unit, typically the TU890 or TU891, which provides the necessary connections for hazardous area wiring.
- Hazardous Area Rules: Installation must strictly follow local “Ex” regulations. Ensure the entity parameters (U_o, I_o, P_o) of the AI890 match the requirements of your field instruments.
- Power Supply: Ensure the 24V DC process power is stable. Voltage drops can affect the accuracy of the 4–20 mA readings or the power supplied to the field transmitters.
- Shielding: To prevent electromagnetic interference (EMI), always use shielded twisted-pair cables and ensure the shield is correctly terminated at the MTU.
Product Applications
The AI890 is primarily used in industries where explosive atmospheres are present:
- Oil & Gas: Monitoring pressure, level, and temperature transmitters on offshore platforms and refineries.
- Chemical Processing: Interfacing with sensors in reactor vessels and storage tanks containing flammable substances.
- Pharmaceuticals: Precision monitoring in clean rooms and processing areas where solvents are used.
- Mining: Handling instrumentation signals in environments prone to combustible dust or gases.
Shipping Port: Xiamen, China
Payment: Bank of Chicago, Bank of Singapore
Express cooperation: fedex, DHL, UPS and your express account
Service: Professional Sales provides 24 hours /7 days online service
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