Description
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 applications. It is engineered to handle a wide range of voltage levels, supporting both 24-230 VAC and VDC, with a maximum switching current of 3 Amps per channel.
Features
- 8 individually galvanically isolated relay output channels.
- Supports a broad operating range of 24-230 VAC/DC.
- Robust 3 Amp switching capacity per output.
- Designed for integration within the ABB S800 I/O series architecture.
- High dielectric strength tested to 2000 VAC.
- Supports field cable lengths up to 600 meters.
Technical Specifications
| Model | DO820 (3BSE008514R1) |
| Number of Channels | 8 |
| Output Type | Relay (N.O.) |
| Voltage Range | 24-230 VAC/DC |
| Max Current | 3 A |
| Power Dissipation | Typical 2.9 W |
| Modulebus Consumption (+5V) | 60 mA |
| Modulebus Consumption (+24V) | 140 mA |
| Rated Insulation Voltage | 250 V |
| Dielectric Test Voltage | 2000 VAC |
Installation Guidelines
- Ensure the system power is completely disconnected before inserting or removing the DO820 module from the S800 I/O base.
- The module is designed for DIN-rail mounting; verify that the mechanical locking mechanism is fully engaged for proper electrical contact.
- Maintain proper grounding practices to ensure the integrity of the galvanic isolation between channels.
- Route field signal cables away from high-voltage or high-EMI power lines to minimize induced noise.
- Verify that field wiring does not exceed the maximum specified length of 600 meters to maintain signal integrity and event recording accuracy.
FAQ
What is the primary function of the ABB DO820?
The DO820 is a digital output module used to interface control logic with field devices via 8 independent relay outputs, suitable for switching loads up to 230V.
Does this module require external power for the outputs?
Yes, the relay outputs are designed to switch external load voltages (24-230 VAC/DC) independently of the internal Modulebus power.
Is the DO820 compatible with all S800 I/O stations?
The DO820 is a standard component of the ABB S800 I/O family; please verify your specific controller configuration and terminal base compatibility before installation.
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Guide
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