A-B 1756-PA75 is a standard power supply module of the ControlLogix series produced by Allen-Bradley(now part of Rockwell Automation).The following is a detailed introduction to the module:

1.Product Overview

A-B 1756-PA75 is a standard power supply module,usually installed on the leftmost dedicated power supply slot of the ControlLogix chassis.Its main purpose is to provide the necessary backplane power to each module installed in the chassis,so that these modules can be powered on and enter the operating state.

2.Technical Specifications

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

Output power:Within a specific temperature range(such as 0~+60°C),the rated output power is 75W(or 140W,depending on temperature conditions).

Current capacity:The current capacity is 3A at 4.3VDC;1A at 13.5VDC;8.24A at 2V DC.In addition,the current capacity of the Allen-Bradley 1756-PA75 is 13A at 5.1V(this information may vary depending on different materials or versions).

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.

Hold-up time:If the working input power is suddenly interrupted,this standard power supply can provide a certain hold-up time,specifically 2 cycles of hold-up time 85VAC,60 Hz 6 cycles 120VAC,60 Hz 20 sections 220VAC,60 Hz.

Isolation voltage:With an isolation voltage rating of 250V(continuous),reinforced insulation type,power input to backplane type,tested at 3500V DC for 60 seconds.

III.Product Features

External power supply:An external power supply must be provided to the 1756-PA75 to operate.

Hardware configuration:The module requires hardware configuration and has a non-replaceable fuse designed to prevent fire hazards caused by short circuits.

Industrial environment 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 altitudes up to 2000 meters without derating.

Warranty and service:Usually a one-year free warranty is provided,and various repair services may be provided(specific warranty and service terms may vary from supplier to supplier).

IV.Application scenarios

A-B 1756-PA75 power modules are widely used in various industrial automation systems,especially in application scenarios that require high precision,high reliability and stability.It can provide stable power support for various ControlLogix series PLCs(programmable logic controllers)and other related equipment to ensure the normal operation and efficient performance of the system

 

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