1746-P4罗克韦尔AB电源模块PLC模块

1746-P4罗克韦尔AB电源模块PLC模块

1746-P4罗克韦尔AB电源模块PLC模块

1746-P4是SLC 500电源模块，为本地机箱、扩展模块或远程/O机箱提供背板电源。通过提供背板电源，连接到机箱插槽的模块变得可操作，并且能够被SLC处理器识别。

该电源的输入电压要求为85至132/170至250伏交流电，频率为47至63赫兹。它还提供24VDC输出，可用于为外部设备供电。不建议使用24VDC输出作为输出模块的电源。这样做将使故障排除变得困难，甚至对于单个模块也是如此，因为必须首先关闭系统电源，这意味着必须停止整个SLC500控制器机架。

SLC 500产品系列的所有电源都有一个称为保持时间的特性。保持时间是指当电源模块的输入电源降至标称水平以下时，处理器继续处理逻辑的能力。如果电源继续经历低电压电平并且保持时间到期，则处理器停止处理逻辑。一旦输入电压恢复到正常水平，就恢复正常工作。

使用1746 P4时，具体的保持时间为20毫秒(满载)3000毫秒(空载)。该电源在UL被列为工业控制设备，并通过了CSA认证的1级、2区、A、B、C、D组危险场所过程控制设备的认证。

1746-P4罗克韦尔AB电源模块PLC模块

The 1746-P4 is an SLC 500 power module that provides a midplane power supply for the local, expansion, or remote /O chassis. By providing backplane power, the module connected to the chassis slot becomes operational and can be recognized by the SLC processor.

The input voltage of this power supply is required to be 85 to 132/170 to 250 volts AC, and the frequency is 47 to 63 Hz. It also offers a 24VDC output that can be used to power external devices. You are not advised to use the 24VDC output as the power supply for the output module. Doing so will make troubleshooting difficult, even for individual modules, because the system must first be powered off, which means the entire SLC500 controller rack must be stopped.

All power supplies in the SLC 500 product family have a feature called hold time. Hold time refers to the ability of the processor to continue processing logic when the input power to the power module drops below the nominal level. If the power supply continues to experience low voltage levels and the hold time expires, the processor stops processing the logic. Once the input voltage returns to normal, normal operation is resumed.

When using 1746 P4, the specific holding time is 20 ms (full load)3000 ms (no load). The power supply is listed as an industrial control device at UL and is CSA certified as A hazardous site process control device for Class 1, Zone 2, Group A, B, C, and D.