How is the rope displacement sensor connected to the PLC?
The method of the cable-drawn displacement sensor and the signal output of the PLC is different. The analog signal needs to be isolated, amplified, and converted, and then input into the PLC data acquisition system; the digital displacement sensor is the traditional voltage-type displacement sensor through the addition of A/D conversion Module or modified circuit, the output digital signal or digital coding signal can be connected to PLC through the digital input port; pulse signal displacement sensor is connected to PLC through the high-speed counting port. The following precision electronic editor will introduce how the displacement sensor is Connected to PLC:
1. The signal type of the displacement sensor needs to be the same as the PLC input port type.
2. There are many types of PLCs. Generally, PLCs have digital input ports that can be directly connected to digital signals. If the PLC does not have an analog input port, it needs to be equipped with an analog expansion module of the same model. Generally, PLC will be equipped with 1-2 sets of analog ports.
3. Pay attention to the power supply and signal during the use of the displacement sensor, do not reverse it, or it may damage the PLC.
4. There are many types of sensors, such as two-wire system, three-wire system, four-wire system, etc., must be distinguished when wiring, and a signal isolator should be installed when necessary.
5. Pay attention to the input and output terminals of the power supply and the input and output terminals of the signal during the use of PLC for safe use.
What the editor above is talking about is how the cable pull displacement sensor is connected to the PLC. If you don’t understand, you can consult the editor or technicians. We will solve all the problems for you and look forward to your attention!