Description
The ABB AI820 (3BSE008544R1) is a high-performance analog input module designed for the S800 I/O series. This module features four individual channels, each providing galvanic isolation to ensure signal integrity and protection against ground loops in industrial control environments.
Features
- Four analog input channels with independent galvanic isolation.
- Supports a wide range of signal types including -20 to +20 mA, 0(4) to 20 mA, -10 to +10 V, and 0(2) to 10 V.
- High-resolution 14-bit plus sign conversion for precise process monitoring.
- Integrated input filtering with a 40 ms rise time (0-90%).
- Robust design with a dielectric test voltage of 500 V AC.
- Efficient power management with low power dissipation of 1.7 W.
Applications
The AI820 module is engineered for use in demanding process automation systems, including DCS and PLC environments where high-precision analog data acquisition is required. It is suitable for monitoring sensors, transmitters, and other field devices that output standard current or voltage signals.
Technical Specifications
| Model |
AI820 (3BSE008544R1) |
| Channels |
4 (Individually Isolated) |
| Resolution |
14 bit + sign |
| Signal Ranges |
-20 to +20 mA, 0(4) to 20 mA, -10 to +10 V, 0(2) to 10 V |
| Over/Under Range |
+/- 15% |
| Input Filter |
40 ms (0-90% rise time) |
| Power Dissipation |
1.7 W |
| Modulebus Consumption (+5V) |
80 mA |
| External Consumption (+24V) |
70 mA |
Installation Guidelines
- Ensure the system power is disconnected before installing or removing the module from the I/O base.
- Mount the module onto a compatible S800 I/O baseplate, ensuring the mechanical locking mechanism is fully engaged.
- Use shielded twisted-pair cabling for all analog inputs to minimize EMI interference.
- Maintain proper grounding practices for the cable shields to prevent noise injection.
- Ensure adequate ventilation in the cabinet to maintain operating temperatures within the manufacturer's specified limits.
- Handle with care to avoid ESD damage; use a grounded wrist strap during installation.
FAQ
Q: Does the AI820 support 4-20 mA signals?
A: Yes, the AI820 supports both 0-20 mA and 4-20 mA current input ranges.
Q: Are the channels isolated from each other?
A: Yes, the AI820 features individual galvanic isolation for each of its four channels.
