A-B 1756-PA75R is a ControlLogix redundant power supply module provided by Allen-Bradley(Rockwell Automation).The following is a detailed introduction to the module:
1.Basic functions
The main function of the power supply module is to convert the input voltage into a stable voltage that supports the CPU,local I/O and any modules installed on the backplane rack.
In addition to the same functions as the standard power supply,the 1756-PA75R also supports automatic chassis load sharing between redundant power supplies.
2.Technical specifications
Input voltage:85265VAC,4763Hz,nominal valuesare 120VAC/240VAC and 50/60Hz.
Output power:Rated output power is 75W at 0+60°C(+32+140°F).
Output current:Current capacity is 4A at 3.3VDC;13A at 5.1VDC;2.8A at 24VDC;1.2A at 1.2VDC.
A-B 1756-PA75R
Dimensions and weight:The dimensions are approximately 6.9×5.7×5.4 inches and the weight is approximately 3.2 pounds.
3.Installation and connection
Installation location:The redundant power supply module 1756-PA75R is installed outside the chassis and is paired with a redundant power supply partner with the same catalog number.
Connection components:When building a redundant power supply pair,two 1756-PA75Rs,two redundant power supply cables(such as 1756-CPR2,1756-CPR2D and 1756-CPR2U),a redundant power supply chassis adapter(catalog number 1756-PSCA2,1756-PSCA2K or 1756-PSCA2XT)and optional signaling equipment(for monitoring the operating status of the power supply module)are required.
4.Indicator and status monitoring
Status indicator:The 1756-PA75R is equipped with a single status indicator to indicate the operating status of the power supply pair.
Solid-state relay:Provides contact output,which can be used to indicate the power supply status when connecting a signaling device.
A-B 1756-PA75R
5.Performance characteristics
Surge immunity:It has transient surge immunity based on IEC 61000-4-5,with a surge transient immunity of±1kV line-to-line(DM)and±2kV line-to-ground(CM)on the signal port.
Conducted RF immunity:10Vrms,1kHz sine wave is 80%AM,ranging from 150kHz to 80MHz.
Temperature range:When used alone,the ControlLogix-XT system(including the 1756-PA75R module)can withstand an ambient temperature range of-25~70°C(-13 to 158°F).
6.Application fields
The 1756-PA75R module is widely used in automated production lines,manufacturing,energy industry,transportation and other fields,helping to achieve higher production efficiency,energy consumption optimization and equipment reliability.
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