Module parameters

Parameter name；parameter value；Remark

Module model；KW-ACTST

Module type；AC detection

Supply voltage；7~28V

Static power；0.7W；TYP

Protocol；Modbus (RTU mode)

Communication level；485

Baud rate；9600

Maximum detection voltage；410V

Maximum detection current；Various options；5A, 10A, 20A, 50A

Measurement accuracy；±0.5%typ；±1.2%max

Operating temperature；-25~85℃

Module size；80*38；L*W(mm)

Module description

KW-ACTST is an isolated high-precision AC detection module. The module isolates the power supply to be tested and the working power supply through the transformer. It has the functions of AC current, voltage, active power, power factor, and frequency detection. The measurement information can be displayed by a digital tube. , up to 5 digital tubes can be connected in series. Provide 485 communication level, and adopt Modbus (RTU mode) communication protocol. Power-off data automatically saves the setting parameters. It can be widely used in industry, agriculture, scientific research, family and other fields.

Precautions for the use of modules

(1) Please read the wiring instructions carefully and wire in strict accordance with the wiring instructions;

(2) The voltage and current to be detected input by the module are AC and cannot exceed the specified collection range;

(3) The power measured by the module is AC active power, which is related to current, voltage, and power factor, not the product of current and voltage. Please do not use this to verify or doubt the correctness of power measurement;

FAQ

Q: Can the order of the displayed contents of the digital be adjusted?

A: It can be modified and adjusted through instructions.

Q: How many digital tubes can be connected at most, can only one digital tube be connected?

A: Up to 5 digital tubes can be connected in series, and the number of series can be controlled to any number within 5.

Q: Why is the data often lost during communication?

A: First, confirm whether the wiring and power supply voltage are stable, and then confirm whether the baud rate is 9600. The instruction interval is recommended to be controlled above 300ms.