Features:
- Interface Between the 4...20mA Single-Ended Analog Input Signals and the AC 800M Controller Backplane
- Integrates Intrinsic Safety Protection with HART Communication Protocol Support
- Functions in Conjunction with the TU890 or TU891 Module Termination Units
The ABB AI895 3BSC690086R1 Analog Input Module serves as the 8-channel analog input interface in an AC 800M rack, providing safe and reliable signal acquisition for all field instruments connected to the system. It continuously receives 4...20mA single-ended current loop signals from hazardous area devices and processes these inputs through built-in Intrinsic Safety circuitry before transmitting the data via the rack backplane to support steady state operation of the controller and associated I/O modules. Seamless HART digital communication is standard with the AI895 3BSC690086R1, and using the HART protocol capability allows simultaneous analog process variable transmission and bidirectional digital device management without interrupting the primary control signal. The AI895 3BSC690086R1 has made improvements in several areas over previous analog input designs in addition to incorporating Intrinsic Safety interface and HART support within the AC 800M rack.
The ABB AI895 3BSC690086R1 Analog Input Module provides essential analog input functions common to the entire I/O station, and is a critical component of the measurement path, directly affecting the proper, normal operation of the overall process control system. One AI895 3BSC690086R1 module occupies a single slot in the rack and supports up to eight analog input channels. The AI895 3BSC690086R1 is always used in conjunction with the dedicated TU890 or TU891 Module Termination Unit, which provides the necessary wiring interface, connection infrastructure, and signal routing for the 4...20mA loops.
For applications requiring HART device management, the ABB AI895 3BSC690086R1 Analog Input Module enables full access to smart transmitter diagnostics, configuration parameters, and status information through the HART protocol superimposed on each analog channel. In addition to standard analog signal acquisition, the HART-enabled configuration also performs remote device parameterization. The AI895 3BSC690086R1 HART functionality executes communication using the internal circuitry specified in the module specifications. Using this method, the HART communication system continually monitors the health and status of connected field instruments. If the system detects that a connected device requires maintenance or calibration, it will automatically report the diagnostic information to the controller and place an event in the System Event List.
The AI895 3BSC690086R1 ABB Analog Input Module may still be available for purchase and support from Apter Power beyond End-Of-Life (EOL) by the manufacturer (OEM).
ABB AI895 3BSC690086R1 Analog Input Module Manuals,Datasheets,Link
Important Notice: Other accessories, manuals, cables, calibration data, software, etc. are not included with this equipment unless listed in the above stock item description. All prices are shown in USD.
ABB AI895 3BSC690086R1 Analog Input Module Specs
General
- Manufacturer ABB
- Model AI895 3BSC690086R1
- Condition New Original ready stock
- Product Family AI835 3BSE008520R1,AI845-EA 3BSE023675R2
Important Notice: Other accessories, manuals, cables, calibration data, software, etc. are not included with this equipment unless listed in the above stock item description. All prices are shown in USD.
- Oil & Gas Refineries: Connects to hazardous-area field sensors without external safety barriers.
- Chemical Processing: Tracks real-time pressure, temperature, and fluid levels in explosive zones.
- Water Treatment: Manages flow transmitters in corrosive chemical dosing environments.
- Power Generation: Gathers analog signal data from critical fuel feed and boiler systems.
- Loop Powering: Supplies a minimum of 15V at 20mA directly to 2-wire process transmitters.
- HART Pass-Through: Enables remote digital device configuration and data calibration over the 4–20 mA loop.
- Signal Integration: Accepts 8 independent, unipolar single-ended analog input currents.
- High-Precision Conversion: Translates field signals accurately using an internal 12-bit A/D converter.
- Intrinsic Safety: Provides integrated isolation for direct connection to Zone 0 and Class I, Division 1 areas.
- Short Circuit Defense: Uses internal PTC resistors to protect the module against field wiring faults up to 30V.
- Current Limitation: Caps transmitter supply current at 23mA to prevent hardware damage during overloads.
- Galvanic Isolation: Features a 500V AC galvanic barrier between the channel group and the system ground.
- Status Supervision: Generates immediate system alerts for open-circuit, under-scale, and over-scale loop errors.