DI820 3BSE008512R1 ABB Digital Input Module

DI820 Digital Input Module

Description

The DI820 is an 8-channel digital input module designed for 120 V a.c./d.c. inputs in the S800 I/O system. It offers 8 digital inputs with an a.c. input voltage range of 77 to 130 volts and an input current of 10 mA at 120 V a.c. For d.c. inputs, the range is 75 to 145 V with an input current of 2.8 mA at 110 V. Each input channel is individually isolated.

Every input channel is equipped with current limiting components, EMC protection components, input state indication LEDs, optical isolation barriers, and an analog filter (6 ms). Channel 1 can be utilized as a voltage supervision input for channels 2 to 4, while channel 8 serves as a voltage supervision input for channels 5 to 7. In case the voltage connected to channel 1 or 8 disappears, the error inputs are activated, and the Warning LED turns on. The error signal can be accessed through the ModuleBus. This supervision can be enabled/disabled with a parameter. If the error inputs are disabled, channels 1 and 8 can be used as normal input channels.

The input channels support digital filtering with selectable filter times of 2, 4, 8, and 16 ms, filtering out noise pulses shorter than the filter time while allowing pulses longer than 3, 6, 12, and 24 ms to pass through.

Five different types of MTUs can be utilized: TU831/TU851 Extended MTU, TU811/TU811V1 Compact MTU, and TU813 Compact MTU, providing two terminals per channel. The TU839 Extended MTU offers two terminals per channel and one terminal for the outgoing sensor supply.

Features

• 8 channels for 120 V a.c./d.c. inputs.
• Individually isolated channels.
• Voltage supervision of field input power.
• Input status indicators.
• Signal filtering.

Technical Data

DI820 Digital Input Module Specifications