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13666033393 | ||||||||
Add | Room 1004, No. 62 Xiangxiu Li, Siming District, Xiamen City, Fujian Province, China |
Product Overview
The ABB TU849 is a passive Module Termination Unit (MTU) designed for the redundant configuration of the Optical ModuleBus Modem TB840/TB840A within the System 800xA architecture. It provides dual power supply inputs, secure DIN rail mounting, mechanical keying, and configurable cluster addressing, ensuring high reliability in automation environments.
Technical Specifications
Parameter | Value |
---|---|
Product Type | Redundant Module Termination Unit (MTU) |
Article Number | 3BSE042560R1 |
Supported Modems | TB840 / TB840A |
Power Supply | Dual 24 V DC (19.2–30 V DC) |
ModuleBus | Single electrical ModuleBus |
ModuleBus Current Distribution | 5 V – max 1.5 A, 24 V – max 1.5 A |
Power Dissipation | 2.5 W |
Cluster Address | Rotary switch (1–7) |
Mechanical Keys | 36 configurations (6 positions × 6) |
Wire Size | 0.2 – 2.5 mm² (24–12 AWG) |
Mounting | DIN rail (vertical or horizontal) |
Rated Insulation Voltage | 50 V |
Dielectric Strength | 500 V AC |
Operating Temperature | 55°C (horizontal), 40°C (vertical) |
Storage Temperature | -25°C to +70°C |
Protection Class | IP20 |
Certifications | cULus, ATEX Zone 2, CE, ABS, DNV-GL, BV, LR |
RoHS/WEEE Compliance | Yes |
Dimensions (W x H x D) | 124 × 186.5 × 47 mm |
Weight | 0.45 kg |
Applications
-
Redundant configuration for TB840/TB840A optical modems
-
Industrial automation systems using ABB System 800xA
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Control system applications requiring reliable dual power input
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I/O extension setups with non-redundant I/O networks
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Environments needing secure DIN rail module mounting
Product Advantages
-
Redundancy Ready: Supports two TB840/TB840A modems and dual power supplies
-
Secure Configuration: Mechanical keying prevents incorrect module insertion
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Simplified Installation: Tool-operated latch for DIN rail locking
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Flexible Mounting: Vertical or horizontal installation options
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Addressable Networking: Rotary switch for quick cluster addressing
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Certified for Harsh Environments: IP20 protection, ATEX Zone 2, marine approvals
FAQ
Q1: What is the function of the TU849?
A1: It serves as a termination unit for connecting TB840/TB840A to non-redundant I/O in redundant configurations.
Q2: Can the TU849 be hot-swapped?
A2: No, the TU849 does not support hot-swapping.
Q3: What type of power supply does it support?
A3: It supports dual 24 V DC power supplies, with a range of 19.2–30 V DC.
Q4: How many address clusters can be configured?
A4: The rotary switch allows up to 7 address clusters (1 to 7).
Q5: What mounting options are supported?
A5: The unit supports both vertical and horizontal DIN rail mounting.
Q6: Does it support redundant ModuleBus connections?
A6: No, it connects to a single electrical ModuleBus.
Q7: Is the TU849 compliant with RoHS directives?
A7: Yes, it meets RoHS compliance under directive 2011/65/EU.
Q8: Can it operate in marine environments?
A8: Yes, it holds certifications from ABS, BV, DNV-GL, and LR.
Q9: What is the rated insulation voltage?
A9: The rated insulation voltage is 50 V.
Q10: How many mechanical keying combinations are available?
A10: There are 36 possible mechanical keying configurations.
Related Models (Same Series or Function)
Model | Description | Dimensions (mm) | Weight (kg) |
---|---|---|---|
TU848 | MTU for redundant I/O with TB840/TB840A | 124 × 186.5 × 47 | 0.45 |
TU850 | MTU for single I/O and TB850 | 124 × 186.5 × 47 | 0.45 |
TU851 | MTU for redundant I/O and TB850 | 124 × 186.5 × 47 | 0.45 |
TU852 | MTU with extended wiring support | 124 × 186.5 × 47 | 0.45 |
TU853 | MTU for complex I/O wiring setups | 124 × 186.5 × 47 | 0.45 |
TB840A | Optical ModuleBus Modem (used with TU849) | 45 × 119 × 132 | 0.25 |
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---|---|---|---|
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