1797-PS2E2A 用于本质安全系统

1797-PS2E2A 用于本质安全系统

1797-PS2E2 模块是由 Allen-Bradley 设计和制造的 FLEX EX I/O 系列本质安全型 IECEX 24 伏直流额定电源模块。1797-PS2E2 PSU（电源单元）是本质安全系统中zui重要的组件之一。其目的是将输入电源电路与相关电气控制电路的危险区域隔离开来，并阻止电路问题从输入侧到输出侧的过渡。1797-PS2E2 模块的另一项任务是设置可利用能量的限制并将其调整到定义的安全水平。

所有 4 个输出通道都可以独立地进行 IS 限制。1797-PS2E2 安全 IECEX PSU 模块为其 4 个输出通道中的每一个提供 8.5 瓦的功率。这种用于爆炸性环境的特殊设备提供的电压额定电压为 24 伏直流电，这是在危险区域连接到 FLEX Ex 系统的组件所需的唯 一电源。用于 24 伏直流电压的输入连接器位于端子 1、2、4 和 5。有 4 个端子覆盖 2 个电源输入，以实现源输入冗余。可接受的输入电压范围为 18 至 32 伏直流电。

Allen-Bradley 1797-PS2E2 4-Ex 输出直流电源模块采用 IP 65/NEMA 7B 级隔爆外壳，改进了输入和输出的安全端接。输入直流电源接头是 M20x1 5，可以接受直径为 6 至 12 毫米的电缆。功率输出压盖（有 4 个）是 M16x1 5，可以接受 4 到 8 毫米宽的电缆。通过这些电缆，电力被传输到执行器、阀门、传感器或变送器。1797-PS2E2 模块支持在通电时拆卸和插入，从而可以在系统运行时在危险区域进行电缆连接。

1797-PS2E2A 用于本质安全系统
The 1797-PS2E2 module is a FLEX EX I/O series intrinsically safe IECEX 24 volt DC rated power module designed and manufactured by Allen-Bradley. The 1797-PS2E2 PSU (Power supply unit) is one of the most important components of an intrinsically safe system. The purpose is to isolate the input power circuit from the danger area of the associated electrical control circuit and prevent the transition of circuit problems from the input side to the output side. Another task of the 1797-PS2E2 module is to set the limit of available energy and adjust it to a defined safe level.

All four output channels can be independently restricted by IS. The 1797-PS2E2 Safety IECEX PSU module delivers 8.5 watts of power to each of its four output channels. This special device for explosive environments offers a voltage rating of 24 volts DC, which is the only power supply needed to connect components to the FLEX Ex system in hazardous areas. Input connectors for 24 volts DC are located at terminals 1, 2, 4 and 5. There are 4 terminals covering 2 power inputs for source input redundancy. The acceptable input voltage range is 18 to 32 volts DC.

Allen-Bradley 1797-PS2E2 4-Ex Output DC power module with IP 65/NEMA Class 7B flame-proof housing, improved input and output safety termination. The input DC power adapter is the M20X5 and can accept cables with diameters from 6 to 12 mm. The power output gland (of which there are four) is the M16x1 5 and can accept cables from 4 to 8 mm wide. Through these cables, electricity is transmitted to actuators, valves, sensors, or transmitters. The 1797-PS2E2 module supports disassembly and insertion when powered on, allowing cable connections in hazardous areas while the system is running.