Allen-Bradley 1756-PA72 C 是一款 ControlLogix 标准电源

Allen-Bradley 1756-PA72 C 是一款 ControlLogix 标准电源

Allen-Bradley 1756-PA72 是一款标准电源，主要用于向 1756 ControlLogix 机箱的背板供电，使连接到机箱的每个模块都能运行。1756-PA72 设计用于接受 85-265 VAC 的输入电压范围和 47-63 Hz 的频率范围。它提供 75 W @ 0-60 °C （+32...+140 °F） 的输出功率，4.3VDC 时电流容量为 3A;10.5VDC 时为 1 A，2VDC 时为 8.24 A。

1756-PA72 的保持时间为 5 个周期 @ 85VAC，50/60 Hz;6 个周期 @ 120VAC，50/60 Hz;6 个周期 @ 200VAC，50/60 Hz 和 6 个周期 @ 240V AC，50/60 Hz。 保持时间是指电源对输入电压移除和直流电源故障的反应。

1756-PA72 安装在机箱的最左侧位置。它有一个专用的插槽分配，位于机箱外部，不占用 ControlLogix 插槽。它可以安装在不同的 ControlLogix 机箱中，例如 1756-A4、1756-A7、1756-A10、1756-A13 和 1756-A17，无论是 A、B 和 C 系列。该电源重量约为 0.95 千克（2.10 磅），物理尺寸为 14.0 x 11.2 x 14.5 厘米（5.51 x 4.41 x 5.71 英寸）。该模块沿 ControlLogix 机箱具有开放式外壳，因此需要安装在外壳内，以保护硬件免受工业污染物和干扰。1756-PA72 不能用于冗余电源应用，但它也可用于分布式 I/O 架构。

1756-PA72 在 25 至 0 摄氏度（60 至 32 华氏度）下的功耗为 140 瓦。该电源的功耗为 85.3 BTU/小时，最大浪涌电流为 20 A。Allen-Bradley 1756-PA72 提供内置过流保护。它由用户提供，最大电流为 15 A。该电源的最大变压器负载为 100VA，电压隔离为连续 250 伏。1756-PA72 还具有在 3500 伏直流电下测试 60 秒的增强绝缘类型。Allen-Bradley 1756-PA72 是开放式设备。此电源应安装在专为某些环境条件设计的适当外壳中。外壳内部只能使用工具进入。请参阅 NEMA 标准 250 和 IEC 60529 出版物中的用户手册，了解不同类型外壳提供的保护级别。

Allen-Bradley 1756-PA72 C 是一款 ControlLogix 标准电源

The Allen-Bradley 1756-PA72 is a standard power supply primarily used to power the backplane of the 1756 ControlLogix case, enabling every module connected to the case to operate. The 1756-PA72 is designed to accept input voltage ranges of 85-265 VAC and frequency ranges of 47-63 Hz. It offers 75 W @ 0-60 °C (+32... +140 °F) output power, current capacity 3A at 4.3VDC; The value is 1 A at 10.5VDC and 8.24 A at 2VDC.

The holding time of 1756-PA72 is 5 cycles @ 85VAC, 50/60 Hz; 6 cycles @ 120VAC, 50/60 Hz; 6 cycles @ 200VAC, 50/60 Hz and 6 cycles @ 240V AC, 50/60 Hz. Hold time refers to the response of the power supply to the removal of the input voltage and the failure of the DC power supply.

The 1756-PA72 is installed in the leftmost position of the chassis. It has a dedicated slot allocation that is located outside the case and does not occupy the ControlLogix slot. It can be installed in different ControlLogix cases, such as the 1756-A4, 1756-A7, 1756-A10, 1756-A13, and 1756-A17, both in the A, B, and C series. The power supply weighs about 0.95 kg (2.10 lb) and has a physical dimension of 14.0 x 11.2 x 14.5 cm (5.51 x 4.41 x 5.71 inches). The module has an open housing along the ControlLogix chassis, so it needs to be installed inside the housing to protect the hardware from industrial contaminants and interference. The 1756-PA72 cannot be used in redundant power applications, but it can also be used in distributed I/O architectures.

The 1756-PA72 consumes 140 watts at 25 to 0 degrees Celsius (60 to 32 degrees Fahrenheit). The power consumption is 85.3 BTU/ hour and the maximum inrush current is 20 A. Allen-Bradley 1756-PA72 offers built-in overcurrent protection. It is supplied by the user and has A maximum current of 15 A. The power supply has a maximum transformer load of 100VA and voltage isolation of 250 volts continuously. The 1756-PA72 also features an enhanced insulation type that tests for 60 seconds at 3,500 volts DC. Allen-Bradley 1756-PA72 is an open device. This power supply should be installed in an appropriate housing designed for certain environmental conditions. The inside of the enclosure can only be accessed by tools. Please refer to the user manuals in NEMA Standard 250 and IEC 60529 publications for the level of protection provided by different types of enclosures.