Description
Technical Specifications
| Parameter Name | Parameter Value |
|---|---|
| Product Model | A413511-02 |
| Manufacturer | Neles Automation (Metso/Valmet lineage) |
| Product Type | Two-Slot I/O Rack / Backplane Assembly |
| Slot Capacity | 2 module slots |
| Mounting Method | DIN rail mount / panel mount |
| Backplane Bus | Proprietary Neles module bus |
| Termination | Integrated screw terminals (field wiring) |
| Material | Industrial-grade aluminum alloy frame |
| Operating Temperature | -20 °C to +60 °C |
| Storage Temperature | -40 °C to +85 °C |
| Humidity Tolerance | 5–95 % RH, non-condensing |
| Compatible Modules | I/O modules, communication modules, power supply units |
| Dimensions (W×H×D) | Approx. 120 × 100 × 80 mm |
| Weight | Approx. 0.5 kg |
| Certifications | CE compliant |
Main Features and Advantages
Space-Efficient Dual-Slot Design: The defining advantage of the A413511-02 is its ability to host two functional modules in a single compact chassis. This is ideal for small-scale automation nodes, remote I/O drops, or cabinet extensions where every millimeter of panel space matters. Instead of allocating separate rail space and wiring for each module, engineers gain a pre-integrated two-module assembly that keeps the installation clean and serviceable.
Simplified Wiring Through Integrated Terminals: The rack incorporates screw terminals that allow field cables—power, signal, and communication—to be pre-wired and landed neatly at the base of the assembly. When a module requires replacement, the field wiring remains undisturbed; the module itself can be unplugged and swapped without rewiring the entire termination point. This is a significant time-saver during fault isolation and greatly reduces the risk of wiring errors during reinstatement.
Robust Backplane Connectivity: Internally, the A413511-02 provides the electrical backbone that links inserted modules to the local bit bus and, by extension, to the controller. Gold-plated or high-reliability contact surfaces on the backplane ensure low-resistance, noise-resistant connections that preserve signal integrity even in electrically noisy industrial environments. This is critical for accurate analog measurement and reliable discrete control.
Rugged Industrial Construction: The chassis is built from a high-grade aluminum alloy that offers an excellent strength-to-weight ratio while providing electromagnetic shielding. It withstands the temperature swings, humidity, and vibration typical of process plant control rooms and field enclosures alike. Its passive design—containing no active electronics of its own—means there is no firmware to maintain and no calibration to drift, contributing to exceptional long-term reliability.
Seamless System Integration: Designed as a native Neles Automation component, the A413511-02 slots directly into existing control architectures without the need for adapters, firmware patches, or engineering workarounds. For facilities committed to maintaining legacy Neles/Metso/Valmet systems, this genuine backplane ensures full mechanical and electrical compatibility—something aftermarket substitutes cannot reliably guarantee.
Application Field
The Neles Automation A413511-02 two-slot rack finds its primary use in process automation installations where Neles valve controllers, positioners, and distributed I/O hardware form part of the control infrastructure. It is most commonly deployed inside control cabinets or local junction boxes that serve a specific process area—such as a valve island, a pump station, or a skid-mounted package unit. By housing two I/O or interface modules in a single compact rack, it allows engineers to build small, self-contained control nodes without dedicating an entire full-size rack to a handful of signals.
In oil and gas facilities, the A413511-02 is frequently used to mount input modules that read valve position feedback and output modules that drive actuator solenoids, creating a localized interface between the DCS and critical shutdown or control valves. In pulp and paper mills, it supports process instrumentation clusters around paper machine sections, stock preparation lines, and recovery boilers—environments where Neles/Metso automation has a long and proven installed base. Chemical processing plants use the rack to extend I/O capacity for reactor temperature, pressure, and flow monitoring loops where adding a full cabinet would be impractical.
Power generation auxiliaries, water treatment plants, and mining mineral processing facilities also benefit from the wherever a small number of field signals must be brought into a Neles-compatible controller. Its dual-slot capacity is perfectly suited to “one input, one output” combinations, making it a cost-effective solution for localized control without over-engineering the installation. For maintenance teams, keeping a spare on the shelf is a low-cost insurance policy against extended downtime—a faulty rack or damaged backplane can be swapped in minutes rather than waiting for a custom fabrication or a full cabinet rebuild.
