1768-PA3 CompactLogix电源模块 用于通过CompactLogix背板供电

产品细节：1768-PA3 CompactLogix电源模块 用于通过CompactLogix背板供电

Allen-Bradley 1768-PA3是一个CompactLogix电源模块。它是一个双输入电源，主要用于通过CompactLogix背板供电。该电源在85-265伏交流电压或108-132伏直流电下工作。打开系统电源之前，在电源所在的同一排安装1768 CompactLogix控制器。为避免出现问题，切勿将1769电源安装到1768 CompactLogix背板上。

1768-PA3模块有一个开放式外壳，可以使用DIN导轨或面板安装进行安装。LED状态指示灯允许用户实时监控模块的当前状态。1768-PA3可来自系列A或B，电源端口的接线类别为1。其兼容的电线尺寸为14至22 AWG绞合或实心铜线，额定温度为167华氏度，最大绝缘为1.2毫米。由于焊接的不可更换保险丝，1768-PA3具有内部过流保护。它还具有用户提供的15安培最大过流保护，其典型效率为75%，最大输入功率为120 VA或120 w。1768-PA3的最大浪涌电流在85至132伏交流电时为50安培，在195至265伏交流电时为80安培，而其功耗为30 W。

Allen-Bradley 1768-PA3是CompactLogix电源。该电源专用于1768产品系列。它是一个具有可选输入的电源，工作电压类别为85 – 265VAC或108 -132VDC。该电源模块提供背板电源，连接的模块使用该电源为各自的电路供电。该电源不向输出模块提供输出功率。1768-PA3的最大输入功率为120VA / 120W，具体取决于输入电压。

1768-PA3电源与1768 CompactLogix控制器兼容使用，如1768-L43、1768-L43S、1768-L45和1768-L45S。将模块安装到任何1768机架时，考虑每个模块的电源距离额定值非常重要。电源距离额定值确保模块仍能从电源获得必要的背板电源。它还可以确保电源的大小得到适当调整。如果与1769紧凑型I/O模块一起使用，1768-PA3可在同一组中容纳多达八(8)个模块。在1768系统中，距离额定值是1769 I/O模块和控制器之间的距离。

该电源配有一个LED指示灯。理想情况下，通电后，LED应该变成绿色。如果指示灯保持熄灭，请验证输入电源是否有效，1768系统中可能存在短路或过载，或者需要更换电源。当此LED指示灯变为红色时，可能意味着背板的电源输出无效、控制器需要更换或通信、运动模块有故障。

1768-PA3

The Allen-Bradley 1768-PA3 is a CompactLogix power supply module. It is a dual-input power supply whose primary purpose is to provide power through the CompactLogix backplane. This power supply operates at 85 – 265VAC or 108 -132VDC. Before powering up the system, install a 1768 CompactLogix controller in the same bank as the power supply. To avoid issues, never install a 1769 power supply to a 1768 CompactLogix backplane.

The 1768-PA3 module has an open-type enclosure and it can be mounted using DIN rail or panel mount. LED status indicators let the user monitor the module’s current state in real time. The 1768-PA3 can be from Series A or B and has a wiring category of 1 for the power ports. Its compatible wire sizes are 14 to 22 AWG stranded or solid copper wire rated at 167 degrees Fahrenheit with a maximum isolation of 1.2 millimeters. The 1768-PA3 has an internal overcurrent protection due to the soldered non-replaceable fuse. It also comes with a user-supplied maximum overcurrent protection of 15 Amps and its typical efficiency rate is 75%, and a maximum input power of 120 VA or 120 W. The 1768-PA3’s maximum inrush current is 50 Amps at 85 to 132 Volts AC and 80 Amps at 195 to 265 Volts AC while its power dissipation is 30 W.

The Allen-Bradley 1768-PA3 is a CompactLogix Power Supply. This Power Supply is used exclusively used for the 1768 product family. It is a power supply with selectable inputs, operating at Voltage categories of 85 – 265VAC or 108 -132VDC. This Power supply module provides backplane power which is used by the attached module to energize their individual circuitry. This power supply does not supply output power to the output modules. The 1768-PA3 features a maximum input power of 120VA / 120W, depending on the input voltage.

The 1768-PA3 power supply is compatible for use with 1768 CompactLogix Controllers such as 1768-L43, 1768-L43S, 1768-L45 and 1768-L45S. When installing modules to any 1768 rack, It is important to consider the power supply distance rating of each module. Power Supply distance rating ensures that the module will still be able to receive the necessary backplane power from the power supply. It also ensures that the power supply is appropriately sized up. If used with 1769 Compact I/O modules, the 1768-PA3 can accommodate up to Eight (8) modules in the same bank. In the 1768 system, the distance rating is the distance between 1769 I/O modules and the controller.

This power supply is provided with a single LED indicator. Ideally, when power is applied, the LED should turn Green. If the LED remained OFF, verify if the input power is active, a short or overload might be active in the 1768 system or the power supply needs to be replace. When this LED indicator turns RED, it may mean that the power output to the backplane is not valid, the controller needs to be replaced or a communication, motion module is defective.

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