T8448 主接口 产生模拟和数字输入信号

T8448是一种与检测相关的现场设备之间的主接口，设计用于火灾和气体探测和抑制。每个通道都是可配置的，可以启用多种现场设备被连接。这些设备包括产生模拟和数字输入信号，以及需要高达40V数字信号的输出设备直流。
T8448的每个电源组由双24V直流电源供电，它们通过VFTA上的二极管“通用”。然后供给供给组内的每个通道。电源电压通过一个315mA熔断器馈电到现场。输入信号(0-20mA)从现场备馈电通过50mA熔断器有效限制输入信号。电压通过输入的250R电阻发展(高精度0.1%)用于输入模块检测现场设备的地位。输入模块40路到VFTA的线缆为在5个10路连接器上终止。40个3路连接器用于字段循环。
T8448的设计考虑了各种应用场景和要求，具有高可靠性、高精度、易于配置等优点，适用于各种工业自动化领域。

T8448

The T8448 is a primary interface between detection-related field equipment designed for fire and gas detection and suppression. Each channel is configurable and enables multiple field devices to be connected. These devices include the generation of analog and digital input signals, as well as output devices that require up to 40V digital signals.
Each power pack of the T8448 is powered by dual 24V DC power supplies, which are “universal” via diodes on the VFTA. Each channel in the supply group is then supplied. The supply voltage is fed to the site through a 315mA fuse. The input signal (0-20mA) is fed from the field standby to effectively limit the input signal through a 50mA fuse. The voltage is developed through the input’s 250R resistance (precision 0.1%) for the input module to detect the position of the field equipment. Cables from the input module 40 to the VFTA are terminated on five 10-way connectors. 40 3-way connectors for field loops.
The design of the T8448 takes into account various application scenarios and requirements, and has the advantages of high reliability, high precision, easy configuration, etc., which is suitable for various industrial automation fields.

T8448

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T8448