Description
ABB TU515 Terminal Unit – Reliable field wiring base for AC500 / S500 I/O
The ABB TU515 is a compact terminal unit used with ABB AC500 controllers and S500 I/O modules. From my experience, it’s the piece that makes field wiring straightforward: you land sensors and actuators on TU515, then the I/O module plugs on top without disturbing the wiring. You might notice that changeovers become faster and cleaner, which matters when downtime costs more than hardware.
Typical applications include packaging lines, water/wastewater skids, compressor panels, and OEM machinery where 24 VDC digital or analog signals need an orderly, serviceable interface. One thing I appreciate is the way TU515 helps keep cabinet layouts consistent—technicians can swap an I/O module and leave all the terminal screws untouched.
Order Placement Process and Guarantees
- Warranty: 365 days
- Delivery time: 1 week if in stock; no more than one month at the latest
- Payment: 50% advance payment, full payment before delivery
- Express delivery: FedEx, UPS, DHL
Key Features
- Purpose-built for ABB S500 I/O – Serves as the wiring base for compatible digital and analog I/O modules on AC500 systems.
- Faster module replacement – I/O module plugs onto the TU515, so maintenance typically involves swapping the module, not rewiring.
- Clean cabinet layout – Channel labeling and neatly arranged terminals support quick commissioning and easier troubleshooting.
- 24 VDC field distribution – Routes field supply to the connected channels; helps reduce separate terminal blocks in many cases.
- DIN-rail mounting – Standard 35 mm rail installation for compact panels and OEM enclosures.
- Rugged, service-friendly design – Industrial-grade terminals and guided module alignment reduce wiring stress and handling errors.
Technical Specifications
| Brand / Model | ABB TU515 |
| HS Code | 853890 (Parts for electrical control equipment) |
| Power Requirements | No separate power; distributes 24 VDC field supply to channels (from system/field supply) |
| Dimensions & Weight | Compact single-width DIN-rail form factor (approx. 45 mm module width); ~0.15 kg typical |
| Operating Temperature | Typically 0…+55 °C (panel-mounted, non-condensing) |
| Signal I/O Types | Field terminals for S500 I/O modules (DI, DO, AI, AO, counters), channel mapping per the installed module |
| Communication Interfaces | None at terminal unit; all communications handled by CPU and bus modules |
| Installation Method | 35 mm DIN-rail (EN 60715); screw terminals for field wiring; IP20 interior use |
Related or Supporting Products
- ABB AC500 CPUs (e.g., PM5xx series) – System controller for S500 I/O; choose based on performance and network needs.
- S500 Digital I/O modules (e.g., DI524, DO524) – Pair with TU515 to interface 24 VDC sensors/actuators.
- S500 Analog I/O modules (e.g., AI523, AO523) – Use TU515 for process signals like 4–20 mA or 0–10 V, with shielded cabling.
- Alternative terminal units (e.g., TU516 series) – Similar purpose with different terminal styles or channel arrangements, depending on wiring preferences.
- Power supplies 24 VDC – Industrial PSU sized for I/O load and inrush; consider redundancy for critical lines.
Installation & Maintenance
- Cabinet & mounting: Install on a 35 mm DIN rail inside an IP54 (or better) enclosure. Leave space above/below for airflow; avoid mounting next to heat sources.
- Wiring: Use ferrules on stranded wires for consistent terminations. Keep analog and high-voltage lines separated; run shielded cable for analog/low-level signals and ground shields at a single point.
- Power distribution: Provide a stable 24 VDC field supply with proper fusing. Common and ground returns should follow the I/O module recommendations to reduce noise.
- Safety: De-energize the panel before attaching or removing I/O modules from the TU515. Verify wiring against the module channel map to avoid miswiring.
- Routine checks: Periodically retighten terminal screws (lightly) and inspect for discoloration or loose conductors. Clean dust with dry air; avoid solvents.
- Firmware: The TU515 itself has no firmware; keep CPU and I/O module firmware up to date per ABB guidance.
A maintenance technician told us they cut mean time to repair by half after standardizing on TU515 bases—most interventions became “swap the module and go.” That matches what we typically see in OEM panels.
Quality & Certifications
- CE compliant; designed for industrial EMC environments
- UL/cUL recognition for control panels (component level), where applicable
- RoHS compliant materials
- Manufacturer warranty per ABB policy; sales warranty provided: 365 days
Reviews
There are no reviews yet.