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DO840 3BSE020838R1

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ABB DO840 3BSE020838R1 is a 16-channel S800 I/O digital output module for supervised 24 V DC current-sourcing loads in single or redundant configurations.
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Technical specifications for DO840 3BSE020838R1

  • Manufacturer:
    ABB
  • Part Number:
    DO840 3BSE020838R1
  • Product Family:
    ABB Advant OCS and Advant-800xA
  • Product Type:
    Digital Output Module
  • Stock:
    1
  • ABB Article Number:
    3BSE020838R1
  • Signal Specification:
    24 V DC (19.2–32 V DC), 0.5 A
  • Output Channels:
    16
  • Signal Type:
    Current sourcing; current limiting
  • Channel Isolation:
    Two groups of eight, isolated from ground
  • Redundancy:
    Yes
  • Output State Handling:
    OSP supported
  • Process-Voltage Supervision:
    One supervision input per group
  • Matching MTUs:
    TU810V1, TU812V1, TU814V1, TU830V1, TU833, TU842, TU843, TU852
  • Operating Temperature:
    0 to +55 °C
  • Protection Rating:
    IP20
  • Weight:
    0.15 kg
  • Estimated shipping dimensions:
    Product dimensions: 4.5 x 11.1 x 11.9 cm (W x D x H), including connector.
  • Tariff Code:
    Please confirm the destination before shipping
  • Country of origin:
    Sweden
  • Place of shipment:
    Xiamen,Fujian,China
By purchasing this item, you agree to the Terms & Conditions, ApterPower is not an authorized distributor for listed manufacturers or tradenames and therefore the manufacturer's warranty does not apply. All our products come with ApterPower's 1-year warranty.

More Information

Overview Manuals Specifications Output Protection Redundant Use MTU Planning

Features:

  • Supervised outputs: Sixteen channels are divided into two isolated groups with process-voltage supervision.
  • Protected switching: Current limiting and output-state handling support controlled fault response.
  • Flexible architecture: ABB documents both single and redundant applications.

DO840 is selected when an S800 I/O installation needs supervised sourcing outputs rather than basic unsupervised switching.

Its group arrangement makes the process-voltage distribution and common-return plan part of the replacement review.

An engineering handover should include the load schedule, redundancy topology, MTU identity, and acceptance test.

Availability is subject to Apter Power's current inventory and sourcing confirmation.

DO840 3BSE020838R1 Digital Output Module Manuals, Datasheets, Links

Important Notice: Other accessories, manuals, cables, calibration data, software, etc. are not included with this equipment unless listed in the above stock item description. All prices are shown in USD.

ABB DO840 3BSE020838R1 Digital Output Module Specs

General

  • ManufacturerABB
  • ModelDO840 3BSE020838R1
  • ConditionNew Original ready stock
  • Product FamilyABB S800 I/O and AC 800M

Important Notice: Other accessories, manuals, cables, calibration data, software, etc. are not included with this equipment unless listed in the above stock item description. All prices are shown in USD.

Fault-response checks

  • Current limiting: Confirm the field load stays within the approved channel duty.
  • Process power: Trace both supervised voltage groups before energizing.
  • OSP behavior: Verify the project-defined output state during communication loss.
  • Diagnostics: Use module and channel indications to isolate power and load faults.

Architecture review

  • Controller support: Confirm redundancy in the controller hardware configuration.
  • Paired hardware: Match both modules, bases, and firmware expectations.
  • Power separation: Document the intended supply and common arrangement.
  • Acceptance: Prove switchover without unexpected field actuation.

Termination review

  • Approved base: Select only an ABB-listed MTU for the installed arrangement.
  • Mechanical keys: Preserve the documented key positions.
  • Terminal map: Compare every output and group-power terminal.
  • Cabinet record: Update drawings after any wiring or base change.
Description
The DO840 3BSE020838R1 provides sixteen supervised 24 V DC current-sourcing outputs arranged in two isolated groups for S800 I/O control applications.

For DO840 3BSE020838R1, ABB documents current limiting, output-set-as-predetermined-state handling, process-voltage supervision, and advanced diagnostics for single or redundant use.

Before ordering DO840 3BSE020838R1, confirm the load current, field-voltage groups, redundancy design, installed MTU, mechanical keying, and complete ABB article number.
Alternative Names
ABB DO840 3BSE020838R1 DO840 3BSE020838R1 DO840 DO 840 DO-840 3BSE020838R1 3BSE 020838 R1 S800 DO840 digital output
Technical notes
ABB DO840 3BSE020838R1 is a digital output module documented for ABB S800 I/O and AC 800M. Verify the complete article, installed hardware, wiring, and system configuration before ordering.
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FAQS

The following is a list of questions commonly asked by our customers. Please contact us if you have a question about our process that is not answered below.
How should DO840 3BSE020838R1 be selected for a redundant S800 I/O station?
Confirm that the controller configuration, MTU, process-power feeds, channel mapping, and approved redundancy architecture all support the intended pair.
What load information is needed before purchasing DO840 3BSE020838R1?
Provide each load type, steady and inrush current, supply range, grounding arrangement, cable route, protective devices, and required safe output state.
What should engineers record before replacing DO840 3BSE020838R1?
Record terminal numbers, group power feeds, channel assignments, output-state settings, MTU model, key positions, alarms, and clear label photographs.
Why might a DO840 channel remain off after installation?
Check process voltage, channel enablement, load wiring, short circuit or overload conditions, output-state logic, module seating, and controller diagnostics.
How should DO840 diagnostic indications be used during troubleshooting?
Separate module-level power or hardware faults from channel-level load faults, then test the affected circuit under the approved plant procedure.
Which MTU checks prevent a DO840 replacement mismatch?
Match the exact MTU article, terminal layout, mechanical key positions, single or redundant arrangement, and cabinet wiring drawing.
How should DO840 outputs be commissioned after replacement?
Keep equipment in a safe state, prove group power, test one channel at a time, confirm the commanded safe state, and record the acceptance results.
What should a DO840 procurement RFQ include?
Include quantity, condition, destination, required date, full labels, MTU identity, redundancy requirement, load schedule, and documentation needs.