Excellent PLC
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| Add | Room 1004, No. 62 Xiangxiu Li, Siming District, Xiamen City, Fujian Province, China | |||||||
Product Introduction
The ABB TB840A 3BSE037760R1 is a high-performance ModuleBus Terminator used in ABB’s AC 800M control system architecture. Designed to be a reliable component within the Industrial IT Extended Automation System 800xA, the TB840A ensures signal integrity and stable communication across the ModuleBus. Its robust construction, high compatibility, and ease of installation make it a preferred choice for demanding industrial automation projects worldwide.
Product Advantages
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Enhanced Signal Integrity: Ensures precise data transmission across the ModuleBus, reducing the risk of communication errors.
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Compact & Durable Design: Built to withstand industrial environments while saving space inside the control cabinet.
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Plug-and-Play Installation: Simplifies system setup, reducing downtime during maintenance or expansion.
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High Compatibility: Seamlessly integrates with AC 800M family and other ABB I/O modules.
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Long Operational Life: Engineered with industrial-grade components for consistent long-term performance.
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Maintenance Friendly: Clear labeling and robust build aid quick identification and replacement.
Technical Parameters
| Parameter | Details |
|---|---|
| Model | TB840A |
| Part Number | 3BSE037760R1 |
| Product Type | ModuleBus Terminator |
| Dimensions | 96 ×119× 54 mm |
| Weight | 0.2 kg |
| Operating Voltage | Supplied via the connected ModuleBus (no separate supply) |
| Operating Temperature | -25°C to +70°C |
| Storage Temperature | -40°C to +85°C |
| Humidity Range | 5% – 95% (non-condensing) |
| Certification | CE, cULus |
| Compliance | RoHS compliant, IEC standards |
Product Applications
The ABB TB840A 3BSE037760R1 is typically applied in:
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Process automation systems requiring stable ModuleBus communication.
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Industrial plants using the ABB AC 800M series controllers.
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Power generation, water treatment, and chemical processing facilities.
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Oil & gas refineries and offshore platforms.
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Systems needing modular expansion with I/O modules.
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Large-scale distributed control systems (DCS).
Product Advantages (Detailed)
The TB840A excels by providing effective termination of the ModuleBus, which is crucial for preserving data integrity and preventing reflections in high-speed communication systems. Its industrial-grade casing resists mechanical stress and electromagnetic interference. Its lightweight design makes it suitable even for installations with strict space constraints, while compatibility with a broad ABB product portfolio simplifies integration.
Frequently Asked Questions (FAQ)
Q1: What is the main function of the TB840A?
A1: It terminates the ModuleBus in ABB AC 800M control systems, ensuring stable and interference-free communication.
Q2: Does the TB840A require external power?
A2: No, it draws power directly from the ModuleBus, simplifying installation.
Q3: Can I use TB840A with non-ABB systems?
A3: It is specifically designed for ABB AC 800M series and may not function correctly outside this environment.
Q4: What material is the housing made of?
A4: Durable industrial-grade plastic that withstands high temperatures and mechanical stress.
Q5: Is TB840A hot-swappable?
A5: Yes, it can typically be replaced without shutting down the entire system, but follow ABB’s guidelines for safety.
Q6: How do I know if I need to install a TB840A?
A6: A ModuleBus segment must be terminated at each end, so TB840A is installed on the last module of the segment.
Q7: What’s the expected lifespan?
A7: When installed and maintained properly, it can last 5+ years without performance degradation.
Q8: Are there environmental limits?
A8: Yes, operating temperature from -25°C to +70°C and humidity up to 95% (non-condensing).
Q9: Does it support diagnostics?
A9: TB840A itself does not have diagnostics, but improper termination can trigger ModuleBus errors detectable by the controller.
Q10: Can it be reused if removed?
A10: Yes, if undamaged, it can be reinstalled in another segment.
Recommended Related Models (Same Series or Compatible)
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TB840 (previous version)
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TB845 (Redundant ModuleBus Terminator)
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TB842 (ModuleBus Terminator with advanced surge protection)
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TB850 (ModuleBus Optical Interface)
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TB810 (ModuleBus Optical Adapter)
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TB820V2 (ModuleBus Extender)
Popular ABB Models (with parameters)
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|---|---|---|---|---|
| PM864AK01 | CPU Controller | 186 × 120 × 100 | ~0.7 kg | 24 V DC |
| AI810 | Analog Input Module | 120 × 120 × 60 | ~0.4 kg | 24 V DC |
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| PM861AK01 | CPU Controller | 186 × 120 × 100 | ~0.7 kg | 24 V DC |
