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ABB TU890 3BSC690075R1 S800 I/O Module Termination Unit
ABB TU890 3BSC690075R1 S800 I/O Module Termination Unit
Brand/Manufacturer: ABB
Order Number: TU890 3BSC690075R1
Type: Module Termination Units
Country of Origin: Sweden
Condition: Original Brand
Lead Time: Available in stock
Payment Term: 100% TT In Advance
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Description
The ABB TU890, also cataloged as the 3BSC690075R1 Module Termination Unit, operates as a dedicated hardware component for field signal termination and ModuleBus distribution within S800 I/O systems.
Hardware Specifications
| Parameter | Specification |
|---|---|
| Model | TU890 (3BSC690075R1) |
| Brand | ABB |
| Origin | Standard Manufacturer Sourcing |
| Weight | Not Specified |
| Dimensions | Standard S800 I/O Compact MTU Footprint |
| Operating Temp | 0 to +55 deg C |
| Power Consumption | Passive Unit (Determined by Connected Module) |
| System Compatibility | S800 I/O System |
| Supported Modules | AI890, AI893, AI895, AO890, AO895, DI890, DO890 |
| Channel Capacity | 8 Channels |
| Voltage Rating | Up to 50 V (limited by I/O module design) |
| Current per Channel | Max 2 A |
| Process Wire Size | Solid: 0.2 to 4 mm2, Stranded: 0.2 to 2.5 mm2 (24 to 12 AWG) |
| Power Wire Size | 0.25 to 2.5 mm2 (24 to 14 AWG) |
| Screw Terminal Torque | 0.5 to 0.6 Nm |
| Dielectric Voltage | 500 V AC |
| Storage Temp | Standard Industrial Limits |
| Relative Humidity | Non-condensing Industrial Range |
| Mounting | Horizontal on DIN rail |
| Ingress Protection | Standard Chassis IP Rating |
| Certifications | Intrinsic Safety Compliant |
Backplane ModuleBus and Deterministic Signal Distribution
The passive backplane structure on the unit manages backplane bus communication velocity and address allocation across connected S800 intrinsically safe modules. Position signals embedded in the MTU interface propagate hardware auto-addressing directly into the ModuleBus structure without requiring software assignment. The backplane design ensures isolation between power distribution pathways and deterministic signal transmission lines, maintaining noise immunity for high-density intrinsically safe field wiring terminations.
Frequently Asked Questions
Q: Does the unit support hot swapping of connected S800 I/O modules?
A: Yes. The passive MTU interface allows live removal and insertion of compatible intrinsically safe I/O modules without interrupting ModuleBus communication to adjacent units on the rail.
Q: How is incorrect module insertion prevented during field replacement?
A: Mechanical keying features on the unit interface match specific I/O module key positions, physically blocking the installation of incompatible or non-intrinsically safe module types.
Q: What is the maximum allowed conductor size for process signal wiring?
A: The process connections accept solid wire up to 4 mm2 or stranded wire up to 2.5 mm2 (24 to 12 AWG).
Field Installation Guidelines
- Mount the unit horizontally on a standard 35 mm DIN rail using the integrated spring-loaded latching mechanism. Ensure the rail is grounded to panel chassis earth.
- Verify mechanical keying positions match the designated I/O module type prior to mounting the active electronics onto the MTU base.
- Strip process and power supply wiring according to manufacturer terminal guidelines. Fasten process terminal screws to a torque specification of 0.5 to 0.6 Nm.
- Maintain separation between intrinsically safe field wiring, power lines, and non-intrinsically safe cabling in compliance with EN/IEC 60079-14 installation standards.
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Testimonials
Fast Delivery, Excellent Quality
We’ve worked with IndustriaX Limited on several urgent orders for automation components. Their ability to provide original, factory-sealed parts with full documentation—often from in-stock inventory—has significantly reduced our downtime. The delivery is consistently fast, and their logistics team is highly responsive. IndustriaX has become one of our most trusted global suppliers for industrial spare parts.
- Sarah Johnson
We’ve worked with IndustriaX Limited on several urgent orders for automation components. Their ability to provide original, factory-sealed parts with full documentation—often from in-stock inventory—has significantly reduced our downtime. The delivery is consistently fast, and their logistics team is highly responsive. IndustriaX has become one of our most trusted global suppliers for industrial spare parts.
- Sarah Johnson
Reliable Partner for Original Parts
Finding authentic automation parts has always been a challenge, especially for discontinued models. IndustriaX Limited has impressed us with their genuine stock, clear product traceability, and prompt updates. We’ve verified their shipments against OEM specs multiple times, and the results are flawless. They’re now our preferred sourcing partner for critical systems.
- David Smith
Finding authentic automation parts has always been a challenge, especially for discontinued models. IndustriaX Limited has impressed us with their genuine stock, clear product traceability, and prompt updates. We’ve verified their shipments against OEM specs multiple times, and the results are flawless. They’re now our preferred sourcing partner for critical systems.
- David Smith
Professional Service with After-Sales Support"IndustriaX Limited doesn’t just ship products—they provide solutions. When we encountered installation issues with one of the modules, their technical team replied in less than 4 hours and provided wiring guides and troubleshooting tips. This level of post-sale support is rare in the spare parts sector. Their professionalism gives us confidence in every order."
- Emily Brown
"IndustriaX Limited doesn’t just ship products—they provide solutions. When we encountered installation issues with one of the modules, their technical team replied in less than 4 hours and provided wiring guides and troubleshooting tips. This level of post-sale support is rare in the spare parts sector. Their professionalism gives us confidence in every order."
- Emily Brown
Trusted Source for Industrial Automation Spares
We've tested multiple suppliers over the years, but IndustriaX Limited consistently stands out. Their product catalog is extensive, their team is knowledgeable, and they understand the urgency of industrial needs. With every order, we receive timely updates, fast delivery, and 100% genuine products. It’s rare to find such consistency and reliability in this field.
- Michael Anderson
We've tested multiple suppliers over the years, but IndustriaX Limited consistently stands out. Their product catalog is extensive, their team is knowledgeable, and they understand the urgency of industrial needs. With every order, we receive timely updates, fast delivery, and 100% genuine products. It’s rare to find such consistency and reliability in this field.
- Michael Anderson