A-B 1797-PS2E2 电源模块用于爆炸性环境的特殊设备提供的电压

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）是本质安全系统中最重要的组件之一。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，并禁用电路问题从输入侧到输出侧的转换。1797-PS2E2模块的另一个任务是设置可访问能量的限制，并将其调整到定义的安全水平。所有 4 个输出通道均可独立进行 IS 限制。1797-PS2E2 安全 IECEX PSU 模块为其 8 个输出通道中的每个通道提供 5.4 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为 24 伏直流电，这是危险区域中连接到 FLEX Ex 系统的组件所需的唯一电源。

1797-PS2E2

A-B 1797-PS2E2 电源模块用于 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 模块支持在带电下拆卸和插入，从而可以在系统运行时在危险区域进行电缆连接。

1797-PS2E2

The 1797-PS2E2 module is an intrinsically safe IECEx 24 volt DC rated power module designed and manufactured by Allen Bradley in the FLEX EX I/O series. The 1797-PS2E2 PSU (Power Supply Unit) is one of the most important components in intrinsically safe systems. The purpose is to isolate the hazardous areas of the input power circuit from the relevant electrical control circuit and disable the conversion of circuit issues from the input side to the output side. Another task of the 1797-PS2E2 module is to set limits on accessible energy and adjust it to a defined security level. All 4 output channels can be independently restricted by IS. The 1797-PS2E2 Safety IECEX PSU module provides 5.4 watts of power for each of its eight output channels. This special equipment used in explosive environments provides a voltage rating of 24 V DC, which is the only power source required for components connected to the FLEX Ex system in hazardous areas.

1797-PS2E2

The input connectors for the A-B 1797-PS2E2 power module for 24 volt DC voltage are located at terminals 1, 2, 4, and 5. There are 4 terminals covering 2 power inputs to achieve source input redundancy. The acceptable input voltage range is 18 to 32 volts DC. The Allen Bradley 1797-PS2E2 4-Ex output DC power module adopts an IP 65/NEMA 7B explosion-proof enclosure, improving the safe termination of input and output. The input DC power connector is M20x1 5, which can accept cables with a diameter of 6 to 12 millimeters. The power output gland (with 4) is M16x1 5 and can accept cables with a width of 4 to 8 millimeters. Through these cables, power is transmitted to actuators, valves, sensors, or transmitters. The 1797-PS2E2 module supports disassembly and insertion under power, allowing for cable connections in hazardous areas during system operation.