Product Details
Description
The DO840 module provides 16 current-sourcing 24 V DC outputs for actuators such as solenoids, relays, and lamps. It supports redundant operation for uninterrupted control and includes diagnostics for short- and open-circuit detection, ensuring reliability in critical oil, gas, and power applications.
Specifications
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Manufacturer: ABB
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Country of Origin: Sweden
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Model Number: DO840
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Order Number: 3BSE020838R1
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Product Series: S800 I/O
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Number of Channels: 16 (Sourcing)
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Nominal Voltage: 24 V DC
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Maximum Output Current: 0.5 A per channel
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Approximate Weight: 0.28 kg
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Redundancy: Supported (Dual module configuration)
Features
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Redundancy Capability: Designed for high-availability architectures to prevent single points of failure in control loops.
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Comprehensive Diagnostics: Real-time monitoring of field wiring integrity, including short-circuit and open-circuit fault detection.
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Galvanic Isolation: Group-wise isolation protects the internal system logic from field-side electrical interference and surges.
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Enhanced Maintenance: Supports hot-swappable replacement, allowing technicians to swap modules without interrupting the process or disconnecting power.
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Front Panel Indicators: Integrated LEDs provide immediate status updates for each channel, power health, and fault conditions.
Additional Information
- 100% Genuine Parts: All products are original and authentic, ensuring reliable industrial performance.
- 30-Day Refund Guarantee: Return any in-stock item within 30 days in original, unopened packaging for a full refund (excluding shipping and fees).
- 12-Month Warranty: Covers defects in materials or workmanship; excludes misuse, normal wear, or unauthorized modifications.
- Worldwide Shipping: We ship via USPS, UPS, FedEx, and DHL. Delivery times vary by country and may be subject to customs or import fees.
- Support & Contact: Technical and warranty assistance is available anytime. Contact us here: Contact.
- Purchase Guidance: Check product specifications and compatibility carefully before ordering to ensure proper application.
Tech & Buying Guide
Redundant Automation Systems: Core Architecture, Business Value, and Technical Advantages
Unplanned downtime poses a major financial threat to process manufacturing. To prevent costly interruptions, engineers deploy redundant PLC and DCS architectures that ensure continuous operation when hardware fails. This technical guide explores redundancy principles, critical system nodes, and real-world scenarios.
Preventing Emergency Stop Spurious Trips in Industrial Control Systems
Emergency Stop pushbuttons use Normally Closed contacts for fail-safe safety, but mechanical wear can cause costly spurious trips. This technical guide examines E-Stop contact failure root causes, redundant hardware setups, PLC logic monitoring, and maintenance strategies to maximize plant availability.
Why 24V DC Is the Universal Standard for Industrial Automation Power Supplies
Industrial manufacturing requires continuous uptime to prevent equipment damage. Unlike AC power, 24V DC circuits seamlessly integrate with UPS units and battery banks. During main grid failures, a 24V DC backup system instantly maintains PLC memory, instrument loops, and critical safety valves without interruption.