3ASC25H208 高速低电平控制装置

产品特性:进口

是否进口:否

产地:美国

加工定制:否

品牌:ABB

型号:3ASC25H208

工作电压:标准V

输出频率:标准kHz

3ASC25H208系统接地方式有浮地方式、直接接地方式和电容接地三种方式。对PLC控制系统而言，它属于高速低电平控制装置，应采用直接接地方式。由于信号电缆分布电容和输入装置滤波等的影响，装置之间的信号交换频率一般都低于1MHz，所以PLC控制系统接地线采用一点接地和串联一点接地方式。

集中布置的PLC系统适合并联一点接地方式，各装置的柜体中心接地点以单独的接地线引向接地极。如果装置间距较大，应采用串联一点接地方式，用一根大截面铜母线（或绝缘电缆）连接各装置的柜体中心接地点，然后将接地母线直接连接接地极。

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3ASC25H208 高速低电平控制装置

Product features: Imported

Import or not: No

Origin: USA

Processing customization: No

Brand :ABB

Model :3ASC25H208

Operating voltage: Standard V

Output frequency: standard kHz

The grounding modes of the 3ASC25H208 system are floating ground, direct ground, and capacitive ground. For PLC control system, it belongs to high-speed low-level control device, should use direct grounding mode. Due to the influence of the signal cable distribution capacitance and the input device filter, the signal exchange frequency between the devices is generally lower than 1MHz, so the grounding wire of the PLC control system uses one-point grounding and one-point grounding in series.

The centralized PLC system is suitable for parallel one-point grounding, and the central ground point of each device is led to the grounding pole by a separate grounding wire. If the distance between the devices is large, the one-point grounding method should be used in series. Connect the cabinet center ground point of each device with a large-section copper bus (or insulated cable), and then connect the ground bus directly to the ground pole.

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