📘 Bently Nevada PWA87890‑01 PCB Card Rev. S — Product Overview
The Bently Nevada PWA87890‑01 PCB Card Rev. S is a rigorously engineered printed circuit board designed for deployment within the 3300 Series machinery protection platform. Specifically tailored for use in critical rotating‑equipment monitoring systems, this board performs core signal‑conditioning, interface and logic functions within the overall rack architecture. The revision “S” denotes an updated iteration incorporating enhanced reliability measures, refined component layout and improved diagnostic pathways, thereby supporting long‑term operation in harsh industrial environments.
Constructed to exacting standards, this PCB card integrates seamlessly into the 3300 Series chassis, interfacing with transducers, relay modules and communication outputs. It plays a pivotal role in translating sensor inputs—such as proximity probes, velocity transducers and axial‑position devices—into processed, buffered, and isolatable signals that feed protective relays and control systems. With a build using flame‑retardant board material (noted as “94V‑0”) and stamped part identifiers (e.g., XE626753 on some assemblies) the card manifests high‑end industrial durability.
🔧 Key Functional Description
Within the monitoring rack, the PWA87890‑01 card functions as a smart interface module: it accepts raw analog signals, routes them through filter networks, amplifiers and logic blocks, and delivers standardized outputs for alarms, trips and condition monitoring systems. It maintains channel isolation, redundant signal paths and has self‑diagnostic features to detect board faults or signal anomalies. The card is intended for continuous service; it has been designed to handle the demanding environmental stresses present in power‑plants, refineries and compressor stations.
📊 Technical Specifications & Datasheet Table
| Parameter | Value / Description |
|---|---|
| Part Number | PWA87890‑01 |
| Revision | Rev. S |
| Board Material | PWB87892‑01 J (as stamping) |
| Board Marking | XE626753 SBC‑2AA; 94V‑0 rated |
| Intended Platform | 3300 Series Monitoring System |
| Signal Types Supported | Proximity, velocity, displacement, axial position, speed |
| Filter/Logic Integration | On‑board amplifiers, filters and alarm logic |
| Outputs | Buffered analog, logic relay interfacing (via rack backplane) |
| Operating Environment | Industrial ambient, –20°C to +65°C (typical for rack cards) |
| Board Dimensions | Conforms to 3300 Series rack slot form factor |
| Safety Rating | Suitable for use in API‑670 compliant monitoring architecture |
| Diagnostics | On‑board fault detection, watchdog logic |
| Typical Use Case | Stationary machinery protection for high‑value rotating equipment |
🛠 Installation & Maintenance Notes
When installing the PWA87890‑01 card, ensure that the card is seated firmly in the designated rack slot of the host 3300 Series chassis. Prior to insertion, power should be removed from the rack to prevent bus transients. After insertion, verify that chassis backplane connectors are clean and that any cable harnesses to external sensors or trip relays are properly secured.
During maintenance intervals, inspect the board for dust accumulation, oxidation on connectors, or thermal discoloration of components. It is recommended to perform a functional self‑test: verify that analog outputs respond as expected to simulated inputs, confirm logic outputs assert under appropriate trip conditions, and check that fault‑LED indicators (if present) remain inactive. Because the board is designed for continuous operation, component aging is minimal, yet verifying firmware revisions (if applicable) and ensuring compatibility with adjacent modules in the rack is best practice.
🔗 Helpful Links
- System components, parts and replacements: https://www.stardcsplc.com/
- Related industrial automation modules: https://www.stardcsplc.com/
📦 Recommended Similar Models
| Model | Description |
|---|---|
| Bently Nevada PWA87891‑01 | Alternate interface PCB for 3300 Series system |
| Bently Nevada PWA87900‑02 | Logic/relay control board for 3300 rack architecture |
| Bently Nevada 3300/42M Module | High‑performance monitor card within 3300 Series family |
| Bently Nevada 3500/22M | Advanced condition‑monitoring module for rotating equipment |
| Bently Nevada PWA88219‑01 | Power‑supply module for 3300/12 series rack systems |
If you require a full PDF datasheet, pin‑out diagrams, or application notes covering this board, please let me know and I can provide that for your records.
