1756-PA72 Allen-Bradley Standard power supply

Description

1756-PA72 Allen-Bradley Standard power supply

The Allen-Bradley 1756-PA72 is a standard power supply primarily used to supply power to the backplane of the 1756ControlLogix case, enabling the operation of every module connected to the case. The 1756-PA72 design allows an input voltage range of 85-265VAC and a frequency range of 47-63 Hz. It operates at 0-60° C(+-3… +140F) when the output power is 75W, current capacity is 3.3VDC 4A; It is 10 A for 5.1 volts DC and 2.8 a for 24 volts DC.
The retention time of 1756-PA72 at 85V AC and 50/60 Hz is 5 cycles; 120 V AC voltage, 6 cycles at 50/60 Hz; 6 cycles at 200 volts AC, 50/60 Hz; Six cycles at 240 volts AC, 50/60 Hertz. Hold time is 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 on the far left side of the chassis. It has a dedicated slot allocation outside the case and does not occupy the ControlLlogix slot. It can be installed in different Controllogix cases, such as 1756-A4, 1756-A7, 1756-A10, 1756-A13, and 1756-A17, either 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 11.2×14.5 cm (5.51 x 4.41×5.71 in). The module, as well as the ControlLogix case, have an open case and therefore need to be installed inside the case to protect the hardware from industrial contaminants and interference. The 1756-PA72 is not available for redundant power applications, but can also be used in distributed I/O architectures.
The 1756-PA72 consumes 25 watts at O to 60 degrees Celsius (32 to 140 degrees Fahrenheit). The power consumption is 85.3 BTU/ hour and the maximum inrush current is 20 a. Allen-Bradley 1756-PA72 provides built-in overcurrent protection. It is supplied by the user and has a maximum current of 15 amps. The supply has a maximum transformer load of 100 volt amperes and a voltage isolation of 250 volts continuous. The 1756-PA72 also has a reinforced insulation type that tests for 60 seconds at 3500 volts DC. The Allen-Bradley 1756-PA72 was an open device. The power supply shall be installed in an appropriate housing designed for specific environmental conditions. The inside of the casing can only be accessed using tools. Refer to the user manuals in NEMA Standard 250 and IEC 60529 publications for levels of protection for different types of enclosures.

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1756-PA72

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