A-B 1756-PA75 is a product of Allen-Bradley(now part of Rockwell Automation).The following is a detailed introduction to A-B 1756-PA75:

1.Product Overview

A-B 1756-PA75 is a ControlLogix power module,which is a standard power supply powered by an external power supply.The main purpose of this power module is to provide the necessary backplane power to the various modules installed in the ControlLogix chassis,so that these modules can be powered on and enter the operating state.

2.Electrical specifications

Input voltage range:85265VAC,4763Hz.The nominal input voltage is 120VAC/240VAC.

Output power:The rated output power varies within a specific temperature range.For example,at 0+60°C(+32+140°F),the rated output power is 75W(in some cases,an output power of 140W may be mentioned,which may be related to specific working conditions or versions).

Current capacity:3A at 4.3VDC;1A at 13.5VDC;8.24A at 2VDC.In addition,some data mention that the current capacity is 13A at 5.1V,which may be data for different versions or test conditions.

III.Physical and installation characteristics

Installation location:This module must be installed on the leftmost dedicated power slot of the 1756 chassis.

Fuse:It has a non-replaceable fuse to prevent fire hazards caused by short circuits.

Dimensions and weight:The specific dimensions and weight information may vary depending on the product version and manufacturer,and please refer to the specific product manual or technical information.

Environmental adaptability:Suitable for industrial environments with pollution degree 2 and excessive Class II applications(as defined in the IEC 60664-1 publication).In addition,it can operate at an altitude of up to 2000 meters without derating.

IV.Functional characteristics

Hold time:If the working input power is suddenly interrupted,this standard power supply can provide a certain hold time.The specific hold-up time depends on the value of the input voltage,such as 2 cycles 85VAC,6 cycles 120VAC(60Hz),20 cycles 220VAC(60Hz).

Isolation Voltage:Has a reinforced insulation isolation voltage rated at 250V(continuous)from the power input to the backplane.The isolation voltage was tested at 3500V DC for 60 seconds.

Compatibility:Compatible with various ControlLogix chassis,such as 1756-A4,1756-A7,1756-A10,1756-A13,1756-A17,etc.,as well as B-series and C-series chassis.

 

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