基本细节:PXI-6509 直接驱动外部数字设备 数字I/O模块

96通道，5 V，TTL/CMOS，24 mA PXI数字I/O模块—PXI‑6509可以直接驱动外部数字设备，如固态继电器(SSR)。 每个端口可配置为输入或输出，并且输出不需要外接电源。
可编程上电状态功能可让用户使用软件来配置初始输出状态，以确保在连接到工业执行器时实现无障碍的安全操作。如果发生计算机或应用程序故障，PXI‑6509可以使用数字I/O看门狗切换到可配置的安全输出状态，以确保检测到故障状态并进行安全恢复。 可编程输入滤波器可消除毛刺/尖峰，并通过软件可选数字滤波器为数字开关/继电器提供去抖动。

在硬件标签上标记的测量类别1或以下操作DIO设备。在测量或测试期间，测量电路要承受与之相连的电路的工作电压和瞬态应力(过电压)。安装类别建立了配电系统中常见的标准耐冲击电压等级。以下是安装

类别的说明:
第一类测量是在非直接连接的电路上进行的测量被称为main3的配电系统电压。这个类别是测量特殊保护的次级电路的电压。这样的电压测量包括信号电平、特殊设备、设备的有限能量部分、由稳压低压电源和电子设备供电的电路。测量第II类是对直接连接的电路进行的测量配电系统。这一类指的是地方一级的配电，例如，标准墙壁插座提供的电源(例如，美国115v或美国230v)欧洲)。测量第二类的例子是在以下方面进行的测量家用电器、便携式工具和类似的DIO设备。测量类别III是指在建筑物安装处进行的测量
分布的水平。此类别是指对硬连线设备的测量，例如固定装置、配电板和断路器中的设备。其他的例子
包括电缆、母线、接线盒、开关、插座在内的布线是否固定固定式、固定式电机与固定装置的永久连接。测量类别IV适用于在一次电源处进行的测量安装(<1,000 V)。示例包括电表和初级测量过流保护装置和纹波控制装置

PXI-6509

96-channel, 5 V, TTL/CMOS, 24 mA PXI Digital I/O module – The PXI‑6509 can directly drive external digital devices such as solid-state relays (SSRS). Each port can be configured as an input or output, and the output does not require an external power supply.
The programmable power-on status feature allows users to configure the initial output status using software to ensure unobtrance-free and safe operation when connected to industrial actuators. In the event of a computer or application failure, the PXI‑6509 can be switched to a configurable security output state using a digital I/O watchdog to ensure that the failure state is detected and safely recovered. A programmable input filter eliminates burrs/spikes and provides de-jitter for digital switches/relays via a software-selectable digital filter.

Operate DIO devices with measurement category 1 or below marked on the hardware label. During a measurement or test, the measuring circuit is subjected to the operating voltage and transient stress (overvoltage) of the circuit connected to it. The installation category establishes the standard shock resistance voltage levels commonly found in distribution systems. The following is the installation

Description of the category:
The first type of measurement is the measurement of the distribution system voltage on the circuit that is not directly connected and is called main3. This category measures the voltage of a specially protected secondary circuit. Such voltage measurements include signal levels, special equipment, limited energy portions of equipment, circuits powered by regulated low-voltage supplies, and electronic devices. Measurement Class II is a measurement of a power distribution system made on a directly connected circuit. This category refers to power distribution at the local level, for example, power supplied by standard wall outlets (e.g., US 115v or US 230v Europe). Examples of the second type of measurement are the measurement of household appliances, portable tools and similar DIO devices in the following areas. Survey Class III refers to the survey carried out at the installation of the building
The level of distribution. This category refers to measurements of hard-wired devices, such as those in fixtures, switchboards, and circuit breakers. Other examples
Whether the wiring including cables, busbars, junction boxes, switches and sockets is fixed, and whether the fixed motor is permanently connected to the fixed device. Measurement Category IV is suitable for measurement installations (< 1,000V) at primary power sources. Examples include electric meters and primary measurement overcurrent protection devices and ripple control devices

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