Product Details
Description
The ABB TB846 is a dual ModuleBus inlet for high-availability S800 I/O clusters, allowing redundant bus cables to connect to a single cluster. It ensures continuous communication with the AC 800M controller, keeping the cluster operational even if one cable fails, ideal for critical, fault-tolerant systems.
Specifications
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Manufacturer: ABB
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Model Designation: TB846
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Order Number: 3BSE021439R1
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Product Type: Redundant ModuleBus Inlet
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System Series: S800 I/O
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Mounting Position: Left-hand side of the I/O cluster
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Inlet Quantity: 2 (Redundant Path Support)
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Maximum Rated Voltage: 50V DC
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Connection Interface: Specialized Bus Plug for S800 MTUs
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Weight: 0.12 kg
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Operating Temperature: +5 to +55°C
Features
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Redundant Path Integration: Provides dual cable entry points to support a fail-safe communication backbone for the I/O subsystem.
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Enhanced System Integrity: Minimizes the risk of total cluster isolation by allowing automatic switching between primary and secondary bus lines.
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Passive Hardware Design: Utilizes a highly reliable passive circuit to bridge signals, eliminating potential electronic failure points within the bus inlet.
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Snap-On Installation: Designed for easy integration onto standard 35mm DIN rails, locking securely to the adjacent Module Termination Unit (MTU).
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Industrial Durability: Built with high-grade materials to withstand the thermal and vibrational stresses common in heavy industrial control cabinets.
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Mechanical Security: Engineered with specific alignment guides to ensure precise electrical contact and prevent incorrect assembly.
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.