ABB PTU810A – Terminal/Connection Unit for S800 I/O Field Wiring

The ABB PTU810A is typically used as a terminal/connection unit within the ABB S800 I/O family, giving you a neat, reliable way to land field wiring and couple it to the S800 I/O modules used with AC 800M-based control systems. From my experience, plants choose this style of terminal unit because it keeps cabinet wiring tidy, reduces installation time, and makes module swaps a lot less stressful during outages.

Order Placement Process and Guarantees

• Warranty: 365 days
• Delivery: 1 week for in-stock; no more than one month at the latest
• Payment: 50% advance payment, full payment before delivery
• Express Options: FedEx, UPS, DHL

Key Features

• Purpose-built for ABB S800 I/O – Interfaces field signals to the corresponding S800 I/O module; ideal in AC 800M-based DCS cabinets.
• Passive terminal base – No separate power needed; it serves as a robust, low-failure wiring interface.
• Clean, serviceable wiring – Clearly arranged terminals for analog and digital channels; reduces wiring errors and speeds up commissioning.
• DIN-rail mounting – Fast installation in standard 19-inch cabinet layouts with good accessibility for maintenance.
• Flexible channel use – Supports the channel count and signal types provided by the paired S800 I/O module (AI/DI/AO/DO).
• Cabinet-friendly design – Works well in enclosed control panels; typically used in temperature-controlled environments for long life.

Technical Specifications

Related / Supporting Products

• ABB TU810 / TU812V1 / TU814 – Other terminal unit types in the S800 I/O family; choose based on channel density and environmental needs.
• ABB TB810 – ModuleBus terminator used at the end of an S800 I/O segment.
• ABB AI810 / AO810 / DI810 / DO810 – Analog and digital I/O modules that typically pair with the terminal units; select per signal type.
• ABB PM861A (AC 800M CPU) – Controller used with S800 I/O; different CPU options available for performance and redundancy.
• ABB CI854A (PROFIBUS), CI851 (Modbus), CI869 (IEC 61850) – Communication interfaces if you are integrating S800 I/O into wider plant networks.

Installation & Maintenance

One thing I appreciate is how straightforward these terminal units are to mount and service. You might notice that most issues in the field come from wiring strain or cabinet heat, not the terminal unit itself. A few practical notes:

• Cabinet & mounting: Install on standard DIN rail in a clean, ventilated control cabinet. Keep ambient within typical S800 limits and away from high-vibration panels.
• Wiring: Use properly ferruled conductors; maintain bend radius and route analog signals separately from high-noise cables. Torque terminals per ABB guidance.
• Grounding: Ensure cabinet ground is low-impedance; bond shields at one end to reduce loops, as is common practice with mixed AI/DI wiring.
• Maintenance: Periodically check terminal tightness during scheduled shutdowns; inspect for discoloration or loosened conductors. Clean dust with dry air.
• Spares strategy: Keep at least one spare terminal unit per cabinet section. In many cases, a swap takes minutes and avoids extended downtime.
• Firmware: Not applicable to the terminal unit; if paired modules have firmware, include them in your regular update policy.

“We swapped a PTU on a weekend outage and had the loop back in service in under 10 minutes. The wiring layout seems to be the reason it goes so smoothly.” — Maintenance Supervisor, specialty chemicals

Quality & Certifications

• Certifications: CE and UL are typically applicable for S800 I/O components; RoHS compliant in most cases.
• Manufacturing Standards: Produced under ISO 9001 quality systems.
• Warranty: 12 months (365 days).