Current sensor 0 - 30A with onboard monitor and alarm function

Overview:

• Current sensor 0 - 30A with onboard monitor and alarm function
• the current value is displayed by two digital tubes, the result of chip sampling calculation is displayed on two digital tubes, allows direct reading.
• current monitoring from 0-30A currents possible
• the measurement condition is simple and easy to use
• the standard input voltage is provided outside and then compared with the current sensing module to determine if the current sensed by the current monitor is within the allowable range
• if the sensed value exceeds the measurement range, the current monitor outputs an appropriate signal
• the serial output of the current monitor can output continuously sampled data for secondary development

Specification:

• Voltage input: 5V
• Power input: 30 mA
• Hall coefficient of current sampling: 22.6mV/A

Instruction for use:

1. Power on: Connect the DC + 5V voltage to the current terminal of the current monitor and wait for about 0.5 seconds.
2. External standard input: to determine whether the current we sense is within the allowable range, a reference voltage can be input by comparing the input terminals externally. The equation of the current amplitude corresponding to the reference voltage is: Uc = 2.5 + Ic * K. (When the input voltage is 5 V, the modulus coefficient for the sampling current K is 26 Mv/A).
3. Start current acquisition: Connect the sampling terminal of the current monitor to the circuit to be acquired in series.
4. digital tube display and serial port output: the current sampling data can be read from the digital tube and serial port, and the baud rate of the serial port is 9600 bps.
5. The protocol to send data frame is that the data frame has two bytes per frame, and the BCD code corresponds to the first byte of four bits high to indicate the positive and negative of the data. The BCD code corresponds to the lower 4 bits of the first byte and the upper 4 bits of the second byte to represent the integer of the current value, and the lower 4 bits of the second byte to represent the decimal of the current value.

Scope of delivery:

• 1* Current sensor 0 - 30A with onboard monitor and alarm function