Allen Bradley 1719 Ex I/O modules 1719-PSDC

The Allen-Bradley 1719-PSDC is a DC Power Supply Module for EX Distributed I/O Systems. It is a part of the distributed I/O system philosophy in which this module gives 24 Volts DC voltage to the I/O modules through a backplane connection. This module can be used exclusively as a part of the Allen-Bradley 1719 distributed I/O system, and it must only be used together with the corresponding backplanes. The power consumption of the 1719-PSDC depends on the number of modules that it supplies. Its power dissipation is around 15% of the power consumption value. The users can install more than 1 of these modules inside of the chassis, keeping in mind that one 1719-PSDC can output up to 30 Watts if the chassis is installed in a zone 2 (Class I, Div 2) area or it can output up to 45 Watts if the distributed unit is mounted in a safe area. If the users install more than 1 power supply module in the chassis, then because they use the parallel connection, the load will be equally distributed between these power supply modules.

Technical specifications for 1719-PSDC

ManufacturerRockwell Automation

BrandAllen-Bradley

Part Number/Catalog No.1719-PSDC

Product LineBulletin 1719 Ex I/O module

Module TypePower Supply Module

Power Supply24 Volts

Approximate Mass220 grams

Dimensions32 x 100 x 103 millimeters

Output45 Watts

Operating Temperature-4 to 140 degrees Fahrenheit

Power Dissipation15%

Installation AreaZone 2 (Class I, Division 2)

The users need to make sure to calculate the power consumption of the I/O modules inside of the distributed I/O system carefully to avoid an overload situation in the Allen-Bradley 1719-PSDC power supply unit. This can easily happen in the startup phase if the users have a large number of certain I/O modules. The module that carries the greatest risk for a startup overload is the Allen-Bradley 1719-IF4HB 4-channel I/O module. Do not install more than 8 of these units in any Bulletin 1719 chassis. The operating temperature range for the device is -20 to 60 degrees Celsius (-4 to 140 degrees Fahrenheit).