User manual for the Fourstar Electronics PFB‑G isolation PROFIBUS bus connector with LED diagnostics.
The PFB‑G is an isolation‑type PROFIBUS bus connector with built‑in LED indicators for power, transmit, receive and termination status. It provides RS‑485 signal isolation, surge and lightning protection, and is suitable for harsh industrial environments.
The manual covers product features, technical specifications, pin definitions, installation procedures, troubleshooting FAQs, ordering information and related products. This manual is written in Chinese.
| Isolation voltage | 1500 VDC |
|---|---|
| Power consumption | ≈0.7 W |
| Communication rate | 0 ~ 10 Mbps (auto‑adaptive) |
| Operating temperature | -40 °C to +85 °C |
| Maximum devices per bus segment | 32 (expandable with repeaters) |
The connector provides 1500 VDC isolation between the power and RS‑485 sides.