Signal isolator

First of all, the signal isolator modulates and converts the signal of the transmitter or instrument through the semiconductor device, and then isolates and converts it through the optical or magnetic sensing device, and then demodulates and converts it back to the original signal before isolation, and isolates the power supply to ensure that the transformed signal, power supply, and ground are relatively independent.

Functions:

1, protect the lower control loop.

2, reduce the impact of environmental noise on the test circuit.

3, prevent public grounding, solenoid valve, frequency converter, and unknown pulse interference to the equipment, while the lower equipment has the function of limiting voltage and current is the transmitter, inverter, instrument, solenoid valve PLC/DCS input and output and communication interface loyal protection. DIN series guide rail structure, easy to install, can effectively isolate the potential between input, output and power and earth, can overcome the frequency converter noise and various high and low frequency pulsation interference.

Because of different manufacturers, the production process and wiring definition of the signal isolator are not the same, but the use occasions are basically the same, so the protection requirements and maintenance of the product are basically the same.

1. Read the instructions carefully before use.

2, when used as a signal isolation, the input end should be serialized into the loop circuit, and the output end is connected to the sampling loop.

3, when used as an isolated power distribution, the input end should be string into the power supply circuit, and the output end is connected to the transmitter.