A-B 1756-PA75

Description

A-B 1756-PA75,also known as Allen-Bradley 1756-PA75 or Rockwell 1756-PA75,is a ControlLogix power module produced by Allen-Bradley(now part of Rockwell Automation).The following is a detailed introduction to the module:

I.Product Overview

The 1756-PA75 is a standard power module that is mainly used to provide the necessary backplane power to various modules installed in the ControlLogix chassis.The module is installed on a dedicated power slot,usually on the far left of the ControlLogix chassis.

II.Technical Specifications

Input voltage:

85-265VAC(also said to be 85-264VAC),frequency is 47-63Hz.

The nominal input voltage is 120VAC/240VAC.

Output power:

The rated output power is 75W(also said to be rated output power up to 140W under certain conditions)in the temperature range of 0°C to+60°C(+32°F to+140°F).

Current capacity:

At 4.3VDC,the current capacity is 3A;

At 13.5VDC,the current capacity is 1A;

At 2V DC(some data are 24V DC or other values,which need to be determined according to the specific version),the current capacity is 8.24A or corresponding values.

A-B 1756-PA75

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 period of hold-up time,specifically:

2 cycles of hold-up time 85VAC,60 Hz;

6 cycles of hold-up time 120VAC,60 Hz;

20 cycles of hold-up time 220VAC,60 Hz.

Isolation voltage:

Rated at 250V(continuous),reinforced insulation type,power input to backplane type.

Test conditions:

Tested at 3500V DC for 60 seconds.

III.Product features

External power supply:The module must be powered by an external power supply to operate.

Hardware configuration:Hardware configuration is required to work properly.

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

Applicable environment:Suitable for industrial environments with pollution degree 2 and excessive Class II applications(as defined in the IEC 60664-1 publication).

Altitude adaptability:It can operate at an altitude of up to 2000 meters without derating.

A-B 1756-PA75

IV.Application scenario

The 1756-PA75 power module is widely used in industrial automation systems,especially in servo motor applications that require high-precision position control,speed control or torque control.It can communicate with the servo motor drive,receive instructions from the PLC,and convert these instructions into signals that the servo motor can understand,thereby achieving precise control of the servo motor.

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