The ABB DO818 (3BSE069053R1) is a 32-channel digital output module from the S800 I/O series, designed for the ABB System 800xA and AC 800M distributed control systems (DCS) . Its core function is to convert logic commands from the controller into high-density 24V DC switching signals to drive field devices such as relays, solenoid valves, indicator lamps, and actuators. With its high channel count, transistor-based switching, and robust protection features, this module is a reliable solution for high-density discrete output applications in demanding industrial environments.
Item No :
DO818Order(MOQ) :
1Payment :
EXWProduct Origin :
SwedenShipping Port :
Wuhan, Hubei, ChinaLead Time :
3-5daysWeight :
0.5kgProducts Description
ABB DO818 3BSE069053R1 Digital Output Module in stock
| Model Number | DO818 3BSE069053R1 |
| Place of Origin | Sweden |
| Dimension/Weight | 0.5kg |
| Condition | New and Original |
| Warranty | 1 year |
| Shipping term | DHL Fedex TNT EMS UPS |
| Payment | TT / Western Union |
| Delivery time | 3-5 days |
| Service | 24 Hours Online Service |
HART pass-through:
Media: The system has pass-through functionality and can be connected either as local I/O (S800) or as Remote I/O.
Purpose: Makes HART data available for clients, e.g. Fieldbus Builder
Protocol: HART protocol
SW interface: Process data via 4 – 20 mA signal are I/O copied to application variables. HART data (status and diagnostic data) are available via “pass-through”.
HW Interface: S800 I/O modules AI845, AI895, AO845 and AO845 S900 I/O modules AI930/931 and AO930
OPC interface: Yes, via HART OPC server
key parameters and features, compiled from official ABB documentation and technical sources
| Item | Specifications / Features |
|---|---|
| Number of Channels | 32 channels, arranged in 2 individually isolated groups of 16 . |
| Output Signal Type | 24 V DC, current sourcing (high-side driver), with current limiting . |
| Process Voltage Range | 12 to 32 V DC (nominal 24 V DC) . |
| Maximum Output Current | 0.5 A per channel, continuous; Short-circuit current limited to < 2 A . |
| System Platform | ABB S800 I/O, compatible with System 800xA and AC 800M . |
| Protection Features | Short-circuit, overvoltage, and overtemperature protection per channel . |
| Group Isolation | 2 isolated groups (RIV 50V) with 16 channels and one voltage supervision input per group . |
| Diagnostics | Module Fault (F), Run (R), OSP status LEDs; per-channel status LEDs; ModuleBus error reporting . |
| Power Dissipation | Typical 2.8 W . |
| Current Consumption | +5V Modulebus: 70 mA (typ); +24V external: 40 mA . |
| Module Termination Units | TU818, TU819, TU830 . |
| Maximum Field Cable Length | 600 meters (656 yards) . |
| Operating Temperature | 0 to +55 °C . |
| Protection Rating | IP20 according to IEC 60529 . |
| Dimensions (W x H x D) | 45 mm x 119 mm x 102 mm . |
| Weight | Approx. 0.18 kg to 0.2 kg . |
| Certifications | CE, ATEX Zone 2, Marine (ABS, BV, DNV-GL, LR, RS), G3 compliant (ISA-S71.04) . |
High-Density 32-Channel Design: The module's standout feature is its compact 45mm-wide form factor that accommodates 32 digital output channels, offering a high-density solution for systems with significant discrete I/O requirements . This saves valuable control cabinet space, reduces wiring costs, and simplifies installation in large automation projects .
Robust Transistor Output Stage: The DO818 uses transistor-based (high-side driver) outputs, providing millisecond-level response times (0.2 ms) for high-speed control applications . Unlike mechanical relays, these solid-state outputs are immune to contact wear and vibration, offer longer operational life, and can switch without arcing .
Integrated Protection and Diagnostics: Each output channel is equipped with protection against short circuits, overvoltage, and overtemperature . The module provides clear diagnostics via status LEDs on the front panel and through the ModuleBus, which reports module and channel errors . A process voltage supervision feature in each isolated group monitors the field power supply; if the voltage drops below 12V, a Channel Error is generated, alerting the system to a potential loss of control power .
Output Set to Predetermined (OSP) for Safety: In case of a communication loss or a controller failure, the module's OSP function allows the outputs to be automatically set to a user-defined "safe state" (on/off). This critical safety feature helps prevent unintended machine movement or process excursions, maintaining a known state even under fault conditions .
The DO818 is an ideal solution for high-density digital output control in process and hybrid industries, including:
General Purpose Actuation: Driving interposing relays, solenoid valves, and indicator lamps in a wide range of industrial processes .
Material Handling: Controlling conveyor sections, sorting gates, and packaging machinery.
Power Generation: Commanding actuators and alarm annunciators in power plants.
Water & Wastewater: Operating valve actuators and pump control relays in treatment facilities.
Q1: What is the primary function of the DO818 module?
A: It is a digital output module that provides 32 channels of 24V DC switching signals to control field devices like relays and solenoid valves based on logic commands from an ABB S800 I/O system controller .
Q2: What is the difference between DO818 and a relay output module?
A: The DO818 is a transistor-based (solid-state) output module with a maximum current rating of 0.5A per channel . It is designed for high-speed switching and long life. DO815 and DO816 are relay output modules with higher contact current ratings (e.g., 3A) but are slower and have a limited mechanical life. They should not be used interchangeably without verifying load requirements .
Q3: What does "current sourcing" mean for the DO818?
A: "Current sourcing" (or source output) means the module's output terminal provides the positive voltage (+24V) to the load. The other side of the load is connected to the common or ground (0V). This is the most common configuration for controlling loads in PLC systems .
Q4: What are the key protection features of the DO818?
A: The DO818 features built-in short-circuit, overvoltage, and overtemperature protection on each output channel . The short-circuit protection is current-limiting; after an initial peak, it enters a repetitive switching mode to prevent damage .
Q5: What is the Output Set to Predetermined (OSP) function?
A: The OSP feature allows the module to drive its outputs to a predefined safe state (which can be configured as either ON or OFF) in the event of a communication failure with the controller. This ensures a deterministic behavior during system faults .
Q6: What termination units (MTUs) are compatible with the DO818?
A: The DO818 is compatible with the TU818 (compact, 1-wire), TU819 (compact, D-sub connectors), and TU830 (extended, 32 output terminals) module termination units, depending on the wiring and cabinet space requirements .
Q7: What is the maximum field cable length for the DO818?
A: The maximum recommended field cable length is 600 meters (656 yards) , ensuring reliable signal transmission over significant distances in a plant .
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