Product Details

1 channel 220V AC optocoupler detection module：

Function: can be used to detect the presence of 220V AC

The output TTL level can be detected by a microcontroller. Power supply can be 3-5V can also be connected to PLC24V level

When connecting to the PLC input terminal, the COM terminal of the PLC is connected to the power supply 24V input terminal and the signal output OUT of this board is connected, and the GND on the optocoupler board is connected to the negative pole of the power supply.

The green 2P 5.0 terminal is connected to 220V voltage, and the 3P terminal is connected to the input of the microcontroller. The board size is 73mm X15mm. Safety warning:

When practical, do not touch any device in the white frame on the board after the module is powered on. Because it is high voltage. Pay attention to the safety of electricity.

3 way description:

1. Function: Test whether AC 220V exists; when there is 220V, the optocoupler can be grounded; otherwise, it is not conductive

⒉. Output high/low level: can be directly connected to the SCM IO interface for testing, the voltage is 3-5V

3. Adapt to PLC connection, compatible with almost all PLC inputs

8 way description:

Function: Test whether AC 220V exists

Output TTL level: MCU can be used for testing, the voltage is 3-5V output can be connected to PLC24V

Wiring: When connecting the PLC input, the COM terminal of the PLC is connected to the 24V power supply, the input end is connected to the signal output S1-S8 of the board, and the optocoupler GND is connected to the negative pole of the power supply.

The blue 5.0 terminal is connected to the 220V voltage, and the yellow pin is the signal output.

When the 220V voltage is normal, it outputs a low level; when the 22OV is powered off, it outputs a high level. Notice:

After the module is powered up, do not touch any part of the white wire frame on the board as it is high voltage. Pay attention to electrical safety.