The output modes of the safety light curtain are: relay, NPN/PNP, dual NPN/PNP, controller, etc.
Relay output: refers to the safety light curtain built-in small relay, by a group of normally open normally closed passive bottom output, can be connected to any load.
NPN/PNP output: both output at the same time, can be selected according to the actual needs of one of the output, and connected to PLC, PC or external relay.
Dual NPN output: can be connected to two load PLC, PC, or external relay or safety relay output.
Dual PNP output: can be connected to two load PLC, PC or external relay or safety relay output.
Controller output: The controller can provide the power supply required by the safety light curtain, and then the safety light curtain can directly drive large capacity loads by the controller.
As for which output mode should be selected, it should be based on the security requirements and specific needs of your device. There is no best, only the most suitable. The output of safety light curtain is diverse, if you do not know how to choose, you can tell your equipment needs and situations so that we choose a more suitable output for you.
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