The AI890 3BSC690071R1 Analog Input Module has 8 channels. The module includes Intrinsic Safety protection components on each channel for connection to process equipment in hazardous areas without the need for additional external devices.Each channel can be either a current input or power and monitor a two-wire process transmitter. The current input is for externally powered transmitters. The input voltage drop of the current input is typically 3 V, PTC included. The transmitter supply for each channel can provide at least 15 V at a 20 mA loop current to power Ex-certified process transmitters and is limited to 23 mA in overload conditions. All eight channels are isolated from the ModuleBus and power supply in one group. Power to the input stages is converted from the 24 V on the power supply connections.
Detailed data
| Resolution | 12 bit |
| Isolation | Group wise isolated from ground |
| Under/over range | 0 / 22 mA |
| Error | Max. 0.1% |
| Temperature drift | Typ. 50 ppm/°C Max. 100 ppm/°C |
| Input filter (rise time 0-90%) | 75 ms |
| Update cycle time | 5 ms |
| Current limiting | Built in current limited transmitter power |
| CMRR, 50Hz, 60Hz | >80 dB |
| NMRR, 50Hz, 60Hz | >20 dB |
| Rated insulation voltage | 50 V |
| Dielectric test voltage | 500 V a.c. |
| Power dissipation | 1.5 W |
| Current consumption +5 V Modulebus | Typ. 70 mA, Max. 150 mA |
| Current consumption +24 V external | Typ. 220 mA, Max. <300 mA |
Features
8 channels for 0...20 mA or 4...20 mA, single ended unipolar inputs.
1 group of 8 channels isolated from ground.
Power and monitor for Ex certified two-wire transmitters.
Non energy-storing analog inputs for externally powered sources.
Robust Isolation:Channel-to-channel and channel-to-ground isolation prevent interference and enhance system safety.
Fast Response Time:The module offers a rapid update rate of less than 25 ms, suitable for real-time control applications.
Scalability:Compatible with ABB AC 800M controllers, allowing easy expansion of input capabilities in large-scale systems.
Diagnostics and Fault Detection:Integrated diagnostics detect wiring faults, signal inconsistencies, and other issues to minimize downtime.
Frequently Asked Questions (FAQ)
Q1: What type of signals can the AI890 3BSC690071R1 module process?
A: The module supports both current (4-20 mA, 0-20 mA) and voltage signals.
Q2: Is the AI890 module compatible with ABB AC 800M controllers?
A: Yes, it is designed for seamless integration with AC 800M control systems.
Q3: Does the module offer diagnostic capabilities?
A: Yes, it features built-in diagnostics to detect faults in wiring and signals.
Q4: What is the resolution of the AI890 module?
A: The module offers a 16-bit resolution for high-precision measurements.
Q5: Can the module operate in hazardous environments?
A: Yes, the AI890 has ATEX and IECEx certifications for use in hazardous areas, depending on the configuration.
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