FAQ

Sensors

Photoelectric Sensors

Displacement Sensors

Vision Sensors

Photomicro Sensors

Ultrasonic Sensors

Pressure Sensors

Vibration Sensors

Sensor Controllers

Ultrasonic Sensor Topic: Synchronous Operation Wiring

FAQ No. FAQ01272

Question

How is the wiring performed for synchronous operation?

Answer

1. E4A-3K Ultrasonic Sensor

Note:

1. When synchronous operation is required, the slide switch on only one Sensor needs to be ON. The others must be OFF and terminals 7 and 8 must be connected.

2. Synchronous operation can be performed with up to 50 Sensors.

3. Do not place the synchronous wiring (wiring of terminals 7 and 8) together with a power supply line.

4. The cable to be used must be less than 10 mm in diameter. Use a shielded cable for synchronous operation.

5. When performing synchronous operation, turn ON the power for all the E4A-3K Sensors. If any of them are not turned ON, the entire operation will not work.
 

2. E4C Ultrasonic Sensor

Single/Synchronous Switch (MON/SYN)

• When multiple Sensors are used at one point, use synchronous operation (4 Sensors max.) to prevent malfunction due to mutual interference.

• Connect the DC power and Sensor to the Amplifier as normal.

• Connect the Amplifier using the E99-C Connector (sold separately).

• When connecting more than two Sensors as shown below, set the switch to MON for one of the Sensors (shown as number 1). All others must be set to SYN.

Note: The above connector is very effective for Reflective Sensors. The Through-beam Sensors also requires connection, but the mutual interference is negligible. Refer to the parallel movement characteristics diagram when spacing the Sensors.
 

3. E4R Ultrasonic Sensor

Standard Pulse Unit

When using multiple E4R-2 Power Supplies at one location, use the E4R-SP Pulse Unit.

The pulses generated by the E4R-SP synchronizes the Sensors, so up to ten E4R-2 Sensors can be used for synchronous operation without malfunction due to interference.

Other Ultrasonic Sensor FAQs

 Does paint or water drops on the sensing surface obstruct the operation of the Ultrasonic Sensor?

 Which Sensors can be used for synchronous operation without causing mutual interference?

 When a cover is placed on the Ultrasonic Sensor sensing surface, does it affect the sensing?