Kulicke and soffa 01482-4004-000-01

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Kulicke and soffa 01482-4004-000-01

当考虑可能造成伤害的输出模块、安全系统或运动设备时，我们应该使用PNP输出或源型继电器连接，因为可能会出现意外运动。这与的概念密切相关电源侧和接地侧开关.

对于NPN器件，信号连接找到地的情况将激活该器件。这意味着，如果电缆磨损并暴露出信号线，而该线碰巧自行接地，您可能会发生意外的运动，因为控制运动的设备将被旁路。当人们在室内保护和操作设备时，可能会发生这种情况。有些人可能会认为，切换到负极可以减少电弧闪光，减少触点磨损。虽然这对于较大电流的电路可能是正确的，但控制电路通常使用低电压、约24 VDC和低电流。

Kulicke and soffa 01482-4004-000-01

When considering output modules, safety systems, or motion equipment that may cause harm, we should use PNP outputs or source type relay connections, as unexpected movements may occur. This is closely related to the concept of power and ground side switches

For NPN devices, the signal connection finding ground will activate the device. This means that if the cable is worn out and the signal line is exposed, and the line happens to ground itself, you may experience unexpected movement because the device controlling the movement will be bypassed. This situation may occur when people are protecting and operating equipment indoors. Some people may think that switching to the negative electrode can reduce arc flash and contact wear. Although this may be correct for circuits with higher currents, control circuits typically use low voltage, approximately 24 VDC, and low current.