3BSE020510R1 DO801 ABB Bailey

Product Dimensions：

The DO801 is a 16-channel digital output module that operates on a nominal 24V DC supply. It is built on the S800L mechanics, characterized by its compact, space-saving design suitable for DIN-rail mounting. Each of its 16 channels is designed for current sourcing, meaning it provides power to the connected load. The module features groupwise isolation, where all 16 channels are isolated as a single group from the system's ModuleBus and external ground, enhancing the system's electrical stability and noise immunity.

Product Parameters

• Part Number: 3BSE020510R1

• Module Type: DO801 Digital Output

• Number of Channels: 16 (1 isolated group of 16)

• Rated Output Voltage: 24V DC (Operational range: 10V to 30V DC)

• Maximum Continuous Output Current: 0.5 A per channel

• Total Maximum Load: 8 A per module (at $0.5 \text{ A} \times 16 \text{ channels}$)

• Output Type: Transistor, current sourcing (High-side driver)

• Isolation Voltage: 50V rated insulation; 500V AC dielectric test voltage

• Power Dissipation: Typically 2.1 W

• Short Circuit Protection: Current-limited and thermally protected (Trip point approx. 2.4 A)

• Field Cable Length: Up to 600 meters (656 yards)

• Dimensions: Width 86.1 mm, Height 102 mm, Depth 58.5 mm

• Weight: Approximately 0.24 kg

Product Advantages

• Robust Protection: Each channel includes built-in protection against short circuits to ground, over-voltage, and over-temperature, ensuring that a fault on one device does not damage the entire module.

• Integrated Diagnostics: The front panel is equipped with status LEDs for the module itself (S-status) and individual LEDs for each of the 16 channels, allowing for rapid visual troubleshooting.

• Output Set as Predetermined (OSP): This safety feature allows the module to set outputs to a specific, user-defined safe state if communication with the controller is lost.

• Ease of Maintenance: Features detachable connectors for process and power wiring, which simplifies module replacement without having to disturb the field wiring.

• High Density: Offers 16 channels in a very small footprint, significantly reducing the amount of cabinet space required for I/O.

Important Considerations (Precautions)

• Current Limits: Ensure the total load of all 16 channels does not exceed the module's thermal capacity. While each channel handles 0.5 A, operating all channels at full capacity simultaneously requires careful consideration of the cabinet's ambient temperature.

• Power Supply Quality: Use a stabilized 24V DC power supply. Excessive voltage ripples or spikes beyond 32V DC can trigger the over-voltage protection or damage the high-side drivers.

• Inductive Loads: Although the module includes internal inductive load suppression, very large inductive loads (like large solenoids or heavy-duty contactors) may require external flyback diodes to prevent EMC interference.

• Hot Swap Rules: While the S800 system supports some hot-swapping, always verify the specific MTU (Module Termination Unit) compatibility and system power status before removing the module under load.

• Environmental Limits: The module is designed for an IP20 environment. It must be installed in a clean, dry, and protected enclosure to prevent contamination.

Product Applications

The DO801 is primarily used to drive discrete field devices that require a 24V DC signal to operate. Common applications include:

• Solenoid Valve Control: Managing the opening and closing of pneumatic or hydraulic valves in process loops.

• Motor Starter Interfacing: Providing start/stop signals to Variable Frequency Drives (VFDs) or Motor Control Centers (MCCs).

• Indicator and Alarm Management: Powering pilot lights, beacons, and audible sirens in industrial control rooms or factory floors.

• Relay Driving: Actuating interposing relays for high-power equipment or voltage-isolated signaling.

• System Sequencing: Used in manufacturing assembly lines to coordinate the movement of actuators and robotic arms.

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