Product Details
Description
The TU841 MTU supports two redundant 24 V DC digital input modules, sharing field wiring to maintain signal flow if one module fails or is replaced. With individual channel power and a passive backplane for hot-swapping, it ensures uninterrupted operation in high-uptime, safety-critical environments.
Specifications
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Manufacturer: ABB
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Country of Origin: Sweden
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Model Number: TU841
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Order Number: 3BSE020848R1
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Product Series: S800 I/O
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Capacity: Dual-slot for Redundant Pairs
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Input Channels: 16 Channels
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Rated Voltage: 24 V DC
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Maximum Current: 8 A per unit
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Mounting: 35mm DIN Rail
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Weight: 0.54 kg
Features
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Dual-Slot Redundancy: Facilitates the installation of two modules in parallel to eliminate single points of failure in digital input loops.
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Integrated Field Termination: Consolidates wiring for 16 discrete channels into a single, organized terminal block for simplified installation.
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Hot-Swap Support: Enables module extraction and insertion under power, ensuring the I/O station remains operational during maintenance.
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Mechanical Security: Equipped with specific coding keys for each slot to prevent the insertion of incorrect module types.
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Galvanic Protection: Designed to provide robust isolation between field-side wiring and the internal ModuleBus logic.
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.