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Description：

The DI828 is an 16 channel 120 V a.c/d.c. digital input module for the S800 I/O. The module has 16 digital inputs. The AC input voltage range is 77 - 130 V and the input current is 8.5 mA at 120V AC. The DC input voltage range is 75 - 130 V and the input current is 2.4 mA at 120V DC. The inputs are individually isolated.

Every input channel consists of current limiting components, EMC protection components, input state indication LED, optical isolation barrier and an analog filter. Channel 1 can be used as voltage supervision input for channels 2 - 8. Channel 16 can be used as voltage supervision input for channels 9 - 15.

If the voltage supervision is used and the voltage connected to channel 1 or 16 disappears, the channel error will be set for the channels and the Warning LED turns on. The error signal can be read from the ModuleBus.

Specification：

Frequently asked questions

Q: Which control systems primarily use the DI828 module?

The ABB DI828 (part number 3BSE069054R1) is a 16-channel, 120 V AC/DC digital input module designed for the S800 I/O system, which commonly integrates with ABB Ability System 800xA and Freelance distributed control systems 

Q: Are the input channels isolated from each other? 

Yes. The DI828 features individually galvanic isolated channels with an isolation rating of 2000 V AC. 

Q: What causes the yellow "Warning" LED on the front panel to illuminate?

A: This warning is typically triggered by the module's built-in Voltage Supervision function.

Q: Can Channel 1 and Channel 16 function as standard inputs if I don't need voltage monitoring?

Yes. Voltage supervision is a soft-configured parameter. If you deactivate the voltage supervision setting inside the ABB Control Builder software, both Channel 1 and Channel 16 revert to standard, independent 120 V digital inputs

Product Applications

Power and Energy: Used for high-voltage switch status monitoring, protection signal acquisition, and auxiliary circuit status indication in power plants, substations, and power grid control systems.

Oil and Gas/Chemical: Connects to 120V logic control elements, valve limit switches, or intermediate relay signals in distributed control systems (DCS) of oil refineries and chemical plants.

Heavy Industry and Metallurgy: Used in steel mills, mines, and other production lines operating under strong electromagnetic interference and harsh environments to safely acquire digital feedback signals from various field switches and control buttons.

Features and benefits

16 channels for 120 V AC/DC inputs

Individually isolated channels

Input status indicators

Signal filtering