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Ultrasonic Sensor: Mutual Interference

FAQ No. FAQ01266

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Question

What happens when multiple Sensors are used and they interfere with each other? What can be done to resolve the problem?

Answer

Mutual interference:

An error occurs in the analog value to the Analog Input Unit of the Digital Panel Indicators or Programmable Controllers.

(For example when the input is 10 mA, an input of 4 mA is indicated.)

When this happens, the error indicator (red LED) will begin to flash.

Countermeasure:

Place the Sensors apart from one another so that they do not interfere with each other.