Overview

The Select I/O system is a flexible, Ethernet-based, single-channel granular I/O solution designed for the ABB Ability™ System 800xA automation platform. It simplifies project workflows by decoupling I/O tasks, reducing the impact of late-stage changes, and promoting standardization in I/O cabinet design. This ensures that automation projects are completed on time and within budget.

The TU865 is a Termination Unit (MTU) for the Ethernet Fieldbus Communication Interface Module. It connects up to 12 Select I/O MTUs and supports single or redundant Ethernet Adapters (TC810, TC811) and Ethernet FCI Communications Interface Modules (CI845). This setup enables reliable communication with AC 800M controllers. Additionally, the TU865 can host an optional High Integrity Module (HI880) for use in SIL 3 safety applications. It is designed for vertical DIN rail mounting and comes with one TL814K01 cover plate included.

General Information

• Article Number: 3BSE078712R1
• Communication Protocol: Ethernet
• Type: MTU for Ethernet FCI (Select I/O)
• Mechanics: Select I/O

Installation

• Hazardous Area/Locations: Yes/Yes

Environment and Certification

• Operating Temperature: -40 °C (-40 °F) to +70 °C (158 °F)
• Storage Temperature: -40 °C (-40 °F) to +85 °C (185 °F)
• Pollution Degree: Pollution Degree 2 (IEC 60664-1)
• Relative Humidity: 5 to 95%, non-condensation
• Altitude: -1000 to 5000 m (restrictions apply)
• Mechanical Operating Conditions: IEC 61131-2
• EMC: IEC/EN 61000-6-4, IEC/EN 61000-6-2
• Overvoltage Categories: Category II (IEC 60664-1)
• Protection Class: IP20 (IEC 60529)
• CE Marking: Yes
• UKCA: Yes

Electrical Safety

• Standards:
  • IEC/EN 61010-1
  • UL 61010-1
  • CSA-C22.2 No. 61010-1-12
  • IEC/EN 61010-2-201
  • UL 61010-2-201
  • CSA C22.2 No. 61010-2-201

Marine Certification

• Certifications: DNV, ABS

Corrosive Atmosphere

• Classification: G3

Compliance

• RoHS Compliance: EU RoHS, UAE RoHS, CN RoHS
• WEEE Compliance: EU

Hazardous Area Certifications

• ATEX:
  • II 3G Ex nA IIC T4 Gc
  • II 3G Ex ec IIC T4 Gc
  • II 3G Ex ic nA IIC T4 Gc
  • II 3G Ex ic ec IIC T4 Gc
• IECEx: Available on IPA:
  • II 3G Ex nA IIC T4 Gc
  • II 3G Ex ec IIC T4 Gc
  • II 3G Ex ic nA IIC T4 Gc
  • II 3G Ex ic ec IIC T4 Gc
• US/CAN:
  • cULus
  • CL I, ZN 2, AEx ec IIC T4 Gc, Ex ec IIC T4 Gc X
  • CL I, ZN 2, AEx nA IIC T4 Gc, Ex nA IIC T4 Gc X
  • CL I, DIV 2, Groups A-D T4
• CCC:
  • Ex ec IIC T4 Gc
  • Ex ec ic IIC T4 Gc

Dimensions

• Width: 135 mm
• Depth: 95.5 mm
• Height: 210 mm
• Weight (including base): 500 g