The manual explains features, connections, specifications and operation of the SWP‑NAC three‑phase power measurement controller.
The SWP‑NAC is a three‑phase power‑parameter data acquisition module that measures voltage, current, active and reactive power, power factor and related values for three‑phase three‑wire or four‑wire systems. It is intended for industrial control, measurement and power‑monitoring applications and can replace traditional transducers, reducing system cost and wiring complexity.
The document covers product introduction, communication interfaces (RS‑485/RS‑232), power supply, pin definitions, measurement accuracy, typical wiring diagrams, first‑ and second‑level control parameters, programming, the SR‑BUS command set, type tables and accompanying files. It also provides configuration steps, network limits and command examples for reading data. This manual is written in Chinese.
| Input voltage range | 0‑500 V |
|---|---|
| Input current range | 0‑20 A |
| Supported baud rates | 1200, 2400, 4800, 9600, 19.2 Kbps |
| Basic accuracy | 0.5 level |
The device accepts a three‑phase voltage range of 0‑500 V and a three‑phase current range of 0‑20 A.