This manual provides operating instructions, configuration settings, and communication protocols for the EL801 electrical parameter meter.
The EL801 is an intelligent voltage and current meter designed for measuring AC/DC parameters. It features multiple input channels with wide measurement ranges, two-way alarm output functions (upper/lower limits), a 4-20mA analog output, and RS485 communication using the Modbus RTU protocol.
The document details how to perform power-on self-checks, configure measurement states, set alarm values and hysteresis, adjust current ratios, and modify compensation values. It also includes wiring diagrams for voltage and current inputs, physical dimensions, safety precautions, and a comprehensive description of the Modbus RTU communication protocol including data frame formats and CRC calculation. This manual is written in Chinese.
| Relative Humidity | ≤85%RH |
|---|
The instrument uses an RS485 interface with the Modbus RTU protocol.
The instrument can measure frequencies up to 200Hz, with accuracy maintained within ±0.5%FS even when the frequency exceeds 100Hz.
Screws must be tightened to a torque between 0.74n·m and 0.9n·m to prevent damage or fire.
The 4-20mA output can drive a load of up to 600Ω with an accuracy of ±0.5%F.S.