The ABB DO820 (3BSE008514R1) is a high-performance digital output module designed for the S800 I/O system. This module features 8 individually galvanically isolated relay output channels, providing flexible control for various industrial field devices. It is engineered to handle a wide range of voltages from 24 V to 230 V AC/DC, making it suitable for diverse automation environments requiring robust relay switching.
Integrated status monitoring and reliable signal transmission.
Designed for seamless integration with the ABB S800 I/O series architecture.
Applications
This module is typically deployed in process automation systems where electrical isolation between the control system and field devices is critical. It is commonly used for switching actuators, solenoid valves, and motor starters in industrial control panels.
Technical Specifications
Model
DO820 (3BSE008514R1)
Channels
8 Relay Outputs (N.O.)
Voltage Range
24-230 V AC/DC
Max Current
3 A
Power Dissipation
Typ. 2.9 W
Isolation
Individually galvanically isolated
Dielectric Test Voltage
2000 V AC
Rated Insulation Voltage
250 V
Max Field Cable Length
600 meters
Current Consumption (5V)
60 mA
Current Consumption (24V)
140 mA
Installation Guidelines
Ensure the system power is completely disconnected before attempting to install or remove the module from the S800 I/O base.
Handle the module using proper ESD precautions to prevent damage to sensitive internal circuitry.
Verify that the module is correctly seated in the mounting base and that all mechanical locking mechanisms are engaged.
Ensure field wiring is properly routed and shielded where necessary to minimize electromagnetic interference (EMI).
Maintain adequate ventilation around the I/O rack to prevent heat accumulation during continuous operation.
FAQ
What type of output does the DO820 provide? The DO820 provides 8 normally open (N.O.) relay outputs that are individually isolated.
What is the maximum cable length supported for field devices? This module supports a maximum field cable length of up to 600 meters.
Is this module compatible with the S800 I/O system? Yes, the DO820 is a standard component of the ABB S800 I/O product line.
