Product Overview and Positioning

TU810/TU810V1 is a 16 channel 50V compact module terminal unit (MTU) designed specifically for ABB System 800xA automation systems, and is a key component of the S800 I/O system. As a passive interface unit, its core function is to achieve electrical connection between field wiring and I/O modules, while carrying the transmission and distribution of Module Bus signals. This MTU adopts a modular design, supports mechanical keying configuration, ensures compatibility with different types of I/O modules, and is suitable for signal access and system expansion in industrial automation scenarios.

Core functions and technical features

Module Bus Management

As the physical carrier of the Modulus Bus, TU810V1 is responsible for distributing bus signals to connected I/O modules and the next level MTU, forming a chain topology structure.

By shifting the output position signal to generate I/O module addresses, automatic addressing is achieved, simplifying the system configuration process.

Mechanical key control configuration system

Equipped with two sets of six position mechanical keys, compatible with the full range of S800 I/O modules such as AI810, AO810, DI810, DO810, etc. through different combinations (a total of 36 configurations).

Keying is only for mechanical positioning and does not affect electrical functions, but it can effectively prevent module misconnection and improve installation reliability.

Signal and power connection

16 channel on-site signal interface: supports standard industrial signals (such as 4-20mA, 0-10V, etc.), with a maximum current of 2A per channel.

Process power connection: Provide 2 × 2 or 5 × 2 power terminals (0V common terminal), supporting a maximum current of 5A, to meet the power supply requirements of sensors and actuators.

Wiring specifications: Solid wire 0.2-4mm ², stranded wire 0.2-2.5mm ² (24-12 AWG), compatible with mainstream industrial cables.

Installation and Protection Design

DIN rail installation: supports horizontal (up to 55 ℃) and vertical (up to 40 ℃) installation, with grounding locking device to ensure electromagnetic compatibility.

Compact structure: Size 170 × 64 × 64mm (height × width × depth), weight only 0.17kg, saving control cabinet space.

Protection level: IP20 (preventing solid foreign objects from entering), suitable for indoor industrial environments, pollution level 2 (IEC 60664-1).

Electrical and Environmental Parameters

Electrical performance

Dielectric strength: 500V AC test to ensure insulation safety between channels.

Overvoltage category: Compliant with IEC 60664-1 standard, suitable for industrial grade power systems.

EMC compatibility: Following EN 61000-6-4 (emission standard) and EN 61000-6-2 (immunity standard), it has strong electromagnetic interference resistance.

Environmental adaptability

Temperature range: working temperature 0-55 ℃, storage temperature -40-70 ℃, supports wide temperature operation.

Humidity conditions: 5% -95% without condensation, meeting the requirements of humid environments (IEC 61131-2).

Corrosive atmosphere: Complies with ISA-S71.04 G3 grade and is suitable for moderately corrosive industrial scenarios such as chemical and metallurgical industries.

Certification and Compliance

Safety certifications: CE, UL 508, cULus (Hazardous Area Class 1, Division 2/Zone 2), ATEX Zone 2, supporting applications in explosion-proof areas.

Classification society certification: ABS, BV, DNV-GL, LR, RS, CCS, applicable to ship automation systems.

Environmental standards: RoHS (EN 50581:2012) and compliance with the WEEE directive, supporting green manufacturing.

List of compatible I/O modules

Analog inputs (AI): AI810, AI815, AI820, AI830, AI830A, AI835, AI835A, AI845

Analog Output (AO): AO810, AO810V2, AO815, AO820, AO845, AO845A

Digital Input (DI): DI810, DI811, DI814, DI830, DI831, DI840, DI880, DI885

Digital Output (DO): DO810, DO814, DO815, DO840, DO880

Pulse/Count Input (DP): DP820, DP840

Application scenarios and system integration

Typical application areas

Process automation: signal acquisition and control in the chemical, petroleum, and power industries, such as temperature, pressure, and flow sensor integration.

Mechanical manufacturing: digital input/output control of machine tools and production lines (such as solenoid valves, encoder signal processing).

Ship and Maritime: Engine room monitoring, deck equipment control, meeting the requirements of marine environmental certification.

System topology

Chain extension: Multiple MTUs are connected in series through a Modulus Bus, supporting maximum I/O point expansion and suitable for large control systems.

Redundant configuration: Although MTU is designed as a single channel, it can be combined with redundant I/O modules to improve system reliability.

Installation and wiring precautions

Grounding requirement: Reliable grounding through DIN rail latch to reduce electromagnetic interference.

Cable management: It is recommended to use shielded cables and lay signal and power cables separately to avoid crosstalk.