ABB AI845 analog input module

ABB AI845 analog input module

Basic information
Type: Analog input module.
Signal specifications: Support 0-20mA, 4-20mA, 0-5V, 1-5V DC, single-ended single-pole input.
Number of channels: 8 channels.
Signal type: Single pole single terminal.
Resolution: 12 bits.
Hart function: Supports Hart communication.
Redundancy: Supports single or redundant operations.

Electrical characteristic
Input impedance: voltage input greater than 10MΩ, current input 250Ω.
Over/under range: 0 / + 15% for 0-20mA and 0-5V; At 4-20mA and 1-5V, it is -12.5% / + 15%.
Accuracy: Maximum 0.1%.
Temperature drift: 50ppm/℃ Max.
Input filter (rise time 0-90%) : 290ms.
Update cycle time: 10ms.
Current limiting: Built-in current limiting transmitter power supply.
Maximum field cable length: 600 meters (656 yards).
Maximum input voltage (non-destructive) : 11V DC.
Common mode rejection ratio, 50Hz, 60Hz: greater than 40dB.
Rated insulation voltage: 50V.
Dielectric test voltage: 500V AC.
Power consumption: 3.5W.
Current consumption: +5V module bus 100mA; +24V module bus 50mA; +24V external Max 265mA (22mA + transmitter current x 1.32).
Diagnostic function
Front panel LED indicator: Fault (F), Operation (R), Warning (W).
Module error monitoring: includes analog read back, reference voltage, internal power supply, checksum, watchdog, and memory errors.
Internal channel error monitoring: includes low-pass filters, multiplexers, and test channel errors.
External channel error monitoring: including low external power supply, transmitter power supply, external shunt error.
Status indicators: Include module errors, module warnings, and channel errors.

Size and weight
Width: 45mm (1.77 in).
Depth: 102mm (4.01 in), including connector 111mm (4.37 in).
Height: 119mm (4.7 in).
Weight: 0.23kg (0.51 lbs.).