DO840 | ABB Digital Output Module Supplier
Introduction:
The DO840 from ABB delivers 16 digital outputs with current limiting and over-temperature protection for reliable industrial automation.
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Product Attributes:
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What Is the DO840?
When a control system demands reliable digital output switching, the DO840 from ABB provides a robust solution. This module features 16 digital outputs, each rated for a maximum continuous output current of 0.5 A. The outputs are current limited and protected against over temperature, ensuring safe operation in demanding environments. Part of the S800 series, it is designed for 24 V d.c. (19.2 - 32 V d.c.) current sourcing applications.
Key Features & Technical Specs
- 16 channels for 24 V d.c. current sourcing outputs.
- Two isolated groups of 8 channels with process voltage supervision.
- Advanced on-board diagnostics with front LEDs for Fault, Run, Warning, OSP, and channel status.
- OSP sets outputs to a predetermined state upon error detection.
- Current limiting and over-temperature protection on each channel.
- Groupwise isolation from ground with rated insulation voltage of 50 V.
- Power dissipation typ. 4.3 W and current consumption +5 V Modulebus 130 mA.
- Maximum field cable length of 600 meters (656 yards).
Routine Care & Reliability Tips
For a maintenance engineer, the DO840 simplifies service with its diagnostic LEDs and redundancy support. The module includes output state indication LEDs and supervision of process power per group. To maintain reliability, regularly inspect the module for dust accumulation and ensure ambient temperature stays within 0 to +55 °C (+32 to +131 °F), or +5 to +55 °C for approvals. The protection class IP20 according to IEC 60529 means it is suitable for clean, dry indoor environments. Following the manufacturer's manual for periodic checks helps extend service life and reduce downtime.
Compatible Systems & Integration
The DO840 integrates with ABB S800 I/O systems and is compatible with MTUs such as TU810, TU812, TU814, TU830, TU833, TU842, TU843, and TU852. It supports redundant or single applications, making it versatile for various automation architectures. For detailed integration steps, refer to official ABB documentation.
Common Questions About the DO840
Q: What is the maximum output current per channel?
A: The maximum continuous output current per channel is 0.5 A.
Q: Does the DO840 support redundancy?
A: Yes, the module supports redundant applications.
Q: What is the operating temperature range?
A: The operating temperature range is 0 to +55 °C (+32 to +131 °F), with approvals issued for +5 to +55 °C.
Q: How many channels does the DO840 have?
A: It has 16 digital output channels.
Q: What is the isolation rating?
A: The module provides groupwise isolation from ground with a rated insulation voltage of 50 V.
Product Support & Availability
The ABB DO840 is available from PetroPartsOnline. In stock and ready to ship, it comes with full manufacturer support. Contact our team for pricing and delivery options.