AO845A 3BSE045584R1 ABB High-density intelligent analog output module AC 800M System 800A 

The ABB DI801 is a classic 16-channel digital input module in the AC 800M distributed control system, specifically designed for the highly reliable acquisition of discrete signals such as switch status, alarm signals, and equipment operation/fault feedback in industrial environments. This module supports 24V DC active or passive (dry contact) input, and features channel-level photoelectric isolation, reverse polarity protection and intelligent diagnostic functions. It is suitable for various automation scenarios such as power, water treatment, mechanical manufacturing and material conveying.

Core features

16 independent digital input channels
Input type: 24V DC (compatible with active signals or passive dry contacts)
Input voltage range: 15-30 V DC (ON), < 5 V DC (OFF)
Input current: approximately 3.5 mA @ 24 V DC
High-reliability isolation design
Photoelectric isolation is achieved between the channel and the backplane
Isolation voltage: ≥ 500 V AC (1 minute)
Surge resistance: ±4 kV (IEC 61000-4-5)
Intelligent diagnostic function
Real-time monitoring of the input signal status
Support channel-level open/short circuit detection (requires coordination with external pull-up/pull-down circuits)
Fault information is simultaneously reported through the LED on the front panel and the DCS alarm system

Technical parameters

Product Images

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