Overview
Specification
| Specification Category | Details |
|---|---|
| Model Number | TU891 / 3BSC840157R1 |
| Product Type | Mounting Termination Unit (MTU) |
| System Compatibility | ABB AC 800M Controller, S800 I/O Series |
| Function | Field signal termination and wiring interface |
| Supported Modules | S800 I/O Module Base Connections |
| Termination Type | Screw-type wiring terminals |
| Number of Terminals | High-density terminal layout for multi-channel field devices |
| Signal Types Supported | Analog, digital, process signals (depending on installed I/O module) |
| Module Mounting | Rail-mounted installation (standard DIN rail) |
| Backplane Interface | Integrated backplane for I/O module communication |
| Operating Temperature Range | –20°C to 70°C |
| Storage Temperature Range | –40°C to 85°C |
| Humidity Rating | 5–95% non-condensing |
| Insulation Strength | Industrial-grade isolation per ABB control hardware standards |
| Wiring Capacity | Accepts typical industrial cable gauges (per ABB S800 guidelines) |
| Material Construction | Flame-retardant, vibration-resistant housing |
| Dimensions | Compact modular footprint for high-density control cabinets |
| Installation Method | DIN-rail clip-on mounting |
| Agency Approvals | CE, UL, and industrial compliance standards |
| Maintenance Requirements | Low; supports quick field wiring checks and module swap-outs |
FAQ
A1: Yes, it supports standard S800 module connections used within AC 800M architectures.
Q2: Does the unit require special tools for installation?
A2: No, technicians can mount the TU891 on a DIN rail and terminate wiring using standard industrial tools.
Q3: Can the TU891 handle both analog and digital signals?
A3: Yes, it supports multiple signal types depending on the I/O module connected.
Q4: How does the TU891 simplify maintenance?
A4: Clear terminal labeling and modular structure enable fast diagnostics and straightforward module swaps.
Q5: Is the TU891 suitable for harsh industrial environments?
A5: Yes, it is built with robust materials and supports a wide temperature range for demanding applications.
Q6: Does it require configuration or programming?
A6: No, the TU891 functions purely as a termination hardware component and needs no configuration.
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Contact: Manski Wong +86 18030205725 manski@cambia.cn
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