Leakage logic: When the signal input terminal flows current, the signal turns ON, which is the leakage logic; pen for vape,one-time vape pen,one use vape pen,one time vape pen,on the go vape pen Shenzhen Aierbaita Technology Co., Ltd. , https://www.aierbaitavape.com
Source logic: When the signal input terminal flows current, the signal turns ON, which is source logic.
The above concepts may not be well understood, and can be judged as simple as this (only positive power supply is taken as an example):
When the signal terminal sends an "ON" signal, if the voltage is low (0V) at this time, it is a drain logic;
When the signal terminal sends an "ON" signal, if the voltage is high at this time (plc, inverter, etc. is generally 24V), it is source logic.
Let me say another way:
The source input is active high, meaning that current flows from the input point, and the sink input is active low, meaning that current flows from the input point.
From the wiring point of view, the source input needs to connect the common terminal (1M and 2M) to M (that is, 24V -), so that the current enters the sensor through L+ (that is, 24+), and then enters the Ix.x wiring of the PLC. The terminal is connected to the common circuit through the internal circuit; the sink type input needs to connect the common terminal (1M and 2M) to L+ (that is, 24V +), so that the current flows out from the PLC's Ix.x terminal through the common terminal. Then enter the sensor and finally return to M (that is 24V -).
When different types of automation products are connected to each other, pay special attention to whether the logic is the same. For example, the input and output of S7-224 DC/DC/DC are source logic, when it is connected with Mitsubishi FR-E500 series inverter. When connecting, the inverter logic should be set to source logic; otherwise, when the AY40 output module of Mitsubishi series PLC is connected to the FR-E500 series inverter, the inverter logic should be set to the sink logic.
December 06, 2022