Product introduction:
One 220V AC optocoupler module can be used to detect whether there is 220V AC, and output high and low levels stably (NPN output). When 220V input is detected, the LED light is on and the optocoupler is turned on to output low level. When there is no 220V input , The LED light is off, the optocoupler is blocked, and the output is pulled high by the resistor. Note when using: When using the module, it should be placed in a dry and ventilated environment with insulation protection, and attention to electrical safety.
Product parameters:
Power supply level: 3-5V (TTL)
PLC electrical level: 24V level available
Terminal: Blue 2P 5.0 terminal
3P terminal interface: MCU input
Board size: 72mm X15mm
Instructions for use:
1. MCU connection
Function description: When the input terminal L N has power, the input LED light is on, the photocoupler is turned on, and the output is low. The microcontroller detects a low level.
When there is no power at the input terminal, the input LED light is off and the optical coupling is blocked, and the output is pulled high by the resistor. The microcontroller detects a high level.
2. PLC does not need external power supply
The MCU IO only needs to be grounded or connected to the power supply+
If it is a substitute button, the positive and negative poles of the two pins of the button must be distinguished, and the positive pole OUT and the negative pole must be connected to GND
Note:
The components in the white wire frame of the L and N input terminals are high-voltage electricity. When the module is powered on, do not touch any components in the white wire frame on the board because it is high-voltage, pay attention to the safety of electricity!
Package Included:
1 x 1-Bit AC 220V Optocoupler Isolation Module