Model: AI820

Item number: 3BSE008544R1

Series: S800 series

Category: Analog input module

Finish: New, not new

Warranty: One year

Stock: Yes

Brand: ABB

dimension

Width 45 mm (1.77 in)

Depth 102 mm (4.01 “), 111 mm (4.37 “) including connector

Height 119 mm (4.7 in)

Weight 0.2 kg (0.44 lb)

Signal specification: -20… +20 mah, 0 (4)… 20 mah, -10… +10 V, 0 (2)… 10 volts

Number of channels: 4

Signal type: bipolar differential

The AI820 analog input module has four differential bipolar current/voltage inputs. Each channel can be a voltage input or a current input. The current input can withstand unexpected maximum normal mode 30 V DC connections. In order to protect the current input circuit from dangerous input levels, i.e. accidental connection of a 24 V supply, the resistance rating of the 250W current detection resistor is about 5 W. It’s just to temporarily protect one channel at a time.

This module allocates external transmitter power to each channel. This adds a simple connection (with an extended MTU) to distribute power to an external 2-wire transmitter. There is no current limit on the transmitter power terminal.

All 4 channels are isolated from the ModuleBus in a group. The power of the input stage is converted from 24 V on the ModuleBus.

Characteristics and advantages

4 channels for -20… +20 mA, 0… 20 mA, 4… 20 mA, -10… +10 V, 0… 10 V, 2… 10 V, -5… +5 V, 0… 5 V, 1… 5 V DC bipolar differential input

A group of 4 channels, isolated from the ground

14-bit resolution plus sign

Input shunt resistor provides 30 V DC protection

Input can withstand HART communication