The alarm input port is used to receive the switch signal of external alarm source and to support normally open and close alarm input.
The connection method of alarm input interface is shown in the figure.
The positive (+ terminal) of the alarm input device is connected to the alarm input port of the device (alarm 1 ~ alarm 16).
The negative (-) terminal of the alarm input device is connected to the grounding terminal of the device (
Note: The ground terminal of the alarm is connected with the ground terminal of the equipment, and any one of the interfaces can be used.
The NC terminal of the alarm is connected to the alarm input terminal (alarm).
When using external power supply to supply power of the alarm input device, the alarm input device needs to share the same ground terminal with the device.
Alarm input voltage range 0v-3.3v, no current, high and low level.