AC Optocoupler 220V Isolation Detect Sensor Board Module PLC 1 3 8 Channel

1 Channel:
Function: Can be used to detect whether 220V AC exists

Output TTL level can be detected by single-chip microcomputer. The power supply can be 3-5V

It can also be connected to PLC24V level

When connected to the PLC input terminal, the COM terminal of the PLC is connected to the power supply 24V input terminal, 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 the 220V voltage

The 3P terminal is connected to the microcontroller input.

The board size is 73mm X15mm

Safety warning:

When this module is powered on, do not touch any device in the white line frame on the board. Because it is high voltage. Pay attention to electrical safety.

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3 Channel:

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

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

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

Safety warning:

When this module is powered on, do not touch any device in the white line frame on the board.. Because it is high voltage. Pay attention to electrical safety.

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8 Channel:

Function: Test AC 220V exists
Output TTL level: can be tested with MCU, the voltage is 3-5V
Output can be connected to PLC 24V
Wiring:
When connecting PLC input, the COM terminal of PLC is connected to 24V power supply, the input terminal 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 220V voltage, and the yellow pin signal is output.
When the 220V voltage is normal, the output is low level; when the 220V power is off, the output is high level.

Safety warning:

When this module is powered on, do not touch any device in the white line frame on the board.. Because it is high voltage. Pay attention to electrical safety.