Overview
Manuals
Field Terminals
ModuleBus Compatibility
Mounting & Ratings
Features:
- TU890 3BSC690075R1 is the complete listed product identity for the supplied hardware execution.
- The documented hardware is an ABB compact module termination unit selected for its assigned equipment role.
- Installation requires a verified match to Advant S800 I/O, the connected assemblies and the approved configuration.
TU890 3BSC690075R1 is an ABB compact module termination unit selected by its complete product identity and documented equipment role. Its suitability depends on the installed Advant S800 I/O system, hardware execution, interfaces and application requirements matching the supplied unit. Visual similarity or a shortened code is not proof of interchangeability.
Before replacing TU890 3BSC690075R1, record the full nameplate, installed position, connector or terminal arrangement, paired equipment and relevant ABB service information. After installation, verify power, communication and control interfaces, complete the approved functional checks and confirm stable operation before returning the equipment to service.
The TU890 3BSC690075R1 ABB Compact Module Termination Unit is supplied subject to exact-item verification. Current revision, lifecycle status, availability and supplied scope are confirmed in the written quotation.
ABB TU890 3BSC690075R1 documentation and reference links.
Important Notice: Every linked document must identify the listed model or its documented family. Confirm the complete order code, hardware revision and installed-system requirements before replacement.
ABB specifies eight channels and 27 blue process terminals. For the process connector, the published wire range is 0.2–4 mm² solid or 0.2–2.5 mm² stranded (24–12 AWG); the recommended torque is 0.5–0.6 Nm. Confirm the exact terminal function and conductor size against the hosted I/O module and local wiring drawing.
The power-supply connector accepts 0.25–2.5 mm² conductors (24–14 AWG), with a recommended 0.5–0.6 Nm torque. Isolate field and process power under the approved site procedure before moving conductors.
TU890 connects field wiring and process power to a compatible S800 I/O module and contains part of the ModuleBus. ABB states that it distributes the bus onward and shifts the outgoing position signals to produce the next module address.
Supported module types listed by ABB are AI890, AI893, AI895, AO890, AO895, DI890 and DO890. This TU890 execution is specified for single I/O; do not substitute it where the station requires a redundant MTU.
The MTU is horizontally mounted on a DIN rail and uses mechanical keying and a latching device. Verify the keyed position and hosted-module match before insertion. ABB specifies 24 V general voltage, a maximum rated voltage of 50 V and a maximum current of 2 A per channel; the connected module's certified application can impose lower limits.
Published ambient limits are 0 to +55 °C, reduced to +40 °C for vertical mounting in a compact MTU. Check cabinet orientation, temperature, terminal condition, ModuleBus position and the approved loop drawings during commissioning.
