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Description
The ABB DO820 (3BSE008514R1) is a high-performance digital output module designed for the S800 I/O series. This module features 8 individually galvanically isolated relay output channels, providing reliable switching for various industrial control applications. Engineered for versatility, it supports a wide voltage range of 24-230 VAC/DC, making it suitable for diverse automation environments requiring robust signal isolation and relay-based output control.
Features
- 8 independent, galvanically isolated relay output channels.
- Supports a broad operating voltage range from 24 VAC/DC up to 230 VAC/DC.
- Capable of handling currents up to 3 Amps per channel.
- Integrated within the flexible and modular S800 I/O architecture.
- Optimized for low power dissipation (typically 2.9 W).
- 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 |
| Rated Insulation Voltage |
250 V |
| Dielectric Test Voltage |
2000 V AC |
| Power Dissipation |
2.9 W (typical) |
| Modulebus Current (+5V) |
60 mA |
| Modulebus Current (+24V) |
140 mA |
| Max Field Cable Length |
600 meters |
Installation Guidelines
- Ensure the system power is completely disconnected before installing or removing the module from the S800 I/O rack.
- Handle the module using proper ESD protection to prevent damage to sensitive internal circuitry.
- Verify that all field wiring is properly secured to the terminal blocks and observe the maximum cable length specification of 600 meters.
- Maintain adequate ventilation around the I/O rack to ensure the module operates within its thermal design limits.
- Ensure proper grounding practices are followed to maintain the integrity of the galvanic isolation between channels.
FAQ
What is the primary function of the ABB DO820 module?
The DO820 is an S800 I/O digital output module that uses physical relays to switch high-voltage or high-current loads, providing galvanic isolation between the field devices and the control system.
Can this module be used in 230V applications?
Yes, the module is rated for operation up to 230 VAC/DC, allowing it to interface directly with standard industrial voltage levels.
