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Installation Instructions
Original Instructions
Compact I/O Expansion Power Supplies
Catalog Number(s) 1769-PA2, 1769-PA2K, 1769-PB2, 1769-PB2K, 1769-PA4, 1769-PA4K,
1769-PB4, 1769-PB4K
Topic
Compact I/O™ power supplies provide 120/240V AC and 24V DC power to modules, which you can place to the left
or the right side of the power supply. As many as eight I/O modules can be placed on each side of the power
supply.
Summary of Changes
This publication contains the following new or updated information. This list includes substantive updates only
and is not intended to reflect all changes. Translated versions are not always available for each revision.
Topic
Updated UK and European Hazardous Location Approval and IEC Hazardous Location
Approval for UKEX and IECEx certifications
Removed power dissipation and derating information, and additional specifications
that can be found in the CompactLogix Power Supplies Specifications Technical Data,
publication
1769-TD008
Page
5
6
8
10
11
13
14
15
Page
3
Throughout
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Summary of Contents for Rockwell Automation Allen-Bradley 1769-PA2
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Page 1: Table Of Contents
Installation Instructions Original Instructions Compact I/O Expansion Power Supplies Catalog Number(s) 1769-PA2, 1769-PA2K, 1769-PB2, 1769-PB2K, 1769-PA4, 1769-PA4K, 1769-PB4, 1769-PB4K Topic Page Power Supply Components Assemble the System Mount the System Connect the System Wire the Power Supply Replace the Fuse Specifications Additional Resources Compact I/O™ power supplies provide 120/240V AC and 24V DC power to modules, which you can place to the left or the right side of the power supply. - Page 2 • La substitution de composants peut rendre • Substitution of components may impair cet équipement inadapté à une utilisation en suitability for Class I, Division 2. environnement de Classe I, Division 2. Rockwell Automation Publication 1769-IN028J-EN-P - August 2022...
- Page 3 • Industrial Automation Wiring and Grounding Guidelines, for additional installation requirements, publication 1770-4.1. • NEMA Standards publication 250 and IEC publication 60529, as applicable, for explanations of the degrees of protection provided by different types of enclosure. Rockwell Automation Publication 1769-IN028J-EN-P - August 2022...
- Page 4 • The enclosure must be accessible only by the use of a tool. • This equipment shall be used within its specified ratings defined by Rockwell Automation. • Transient protection shall be provided that is set at a level not exceeding 140% of the peak rated voltage at the supply terminals to the equipment.
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Page 5: Power Supply Components
Terminal block with fingersafe cover Cover for replaceable fuse Stationary bus connector with male pins Nameplate label Upper and lower DIN rail latches Upper and lower tongue-and-groove slots Movable bus connector with female pins Rockwell Automation Publication 1769-IN028J-EN-P - August 2022... -
Page 6: Assemble The System
The power supply does not support removal or insertion of modules under power. 2. Make sure that the bus lever of the power supply is in the unlocked position, that is, fully to the right. Rockwell Automation Publication 1769-IN028J-EN-P - August 2022... - Page 7 The end cap covers the exposed interconnections on the right side of the controller or module. Failure to use a protective covering could result in equipment damage or injury from electric shock. Rockwell Automation Publication 1769-IN028J-EN-P - August 2022...
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Page 8: Mount The System
Secure DIN rail to mounting surface approximately every 200 mm (7.8 in.) and use end-anchors appropriately. Be sure to ground the DIN rail properly. Refer to Industrial Automation Wiring and Grounding Guidelines, Rockwell Automation publication 1770-4.1, for more information. -
Page 9: Minimum Spacing
Place the Compact I/O system in an enclosure to protect it from a corrosive atmosphere. Harmful contaminants or dirt can cause improper operation or damage components. • In extreme cases, use air conditioning to protect against heat build-up within the enclosure. Rockwell Automation Publication 1769-IN028J-EN-P - August 2022... -
Page 10: Connect The System
To use a 1769 expansion I/O power supply with a controller that has an embedded power supply (for example, a MicroLogix™ 1500 controller), you must use a 1769 expansion I/O cable. Do not directly attach the expansion power supply to a controller that has an embedded power supply. Rockwell Automation Publication 1769-IN028J-EN-P - August 2022... -
Page 11: Wire The Power Supply
Each terminal accepts as many as two wires with the following restrictions. Keep the leads as short as possible. Wire Size Wire Type Terminal Screw Torque Cu-90 °C (194 °F) 1.27 N•m (11.24 lb•in) 2.5 mm (14 AWG) Solid Rockwell Automation Publication 1769-IN028J-EN-P - August 2022... -
Page 12: Wire The Fingersafe Terminal Block
6.35 mm (0.25 in.) and the minimum inside diameter of 3.5306 mm (0.139 in.) [M3.5]. 3. Tighten the terminal screw, be sure that the pressure plate secures the wire. The recommended torque is 1.27 N•m (11.24 lb•in). Rockwell Automation Publication 1769-IN028J-EN-P - August 2022... -
Page 13: Replace The Fuse
If you use a tool to press the fuse in place, apply pressure only to the metal end caps, not to the center of the fuse. 6. Replace the fuse housing cover. 7. Restore power to the controller system. Rockwell Automation Publication 1769-IN028J-EN-P - August 2022... -
Page 14: Specifications
(14 AWG) solid copper wire rated at 90 °C (194 °F), or greater, 1.2 mm (3/64 in.) insulation max North American temp code T3C UKEX/ATEX/IECEx temp code Enclosure type rating None (open-style) Catalog numbers followed by a “K” indicate a conformal coating option. Rockwell Automation Publication 1769-IN028J-EN-P - August 2022... -
Page 15: Additional Resources
Compact I/O Expansion Power Supplies Installation Instructions Additional Resources These documents contain additional information concerning related products from Rockwell Automation. Resource Description ™ CompactLogix Power Supplies Specifications Provides a detailed description of the 1769 CompactLogix Technical Data, publication 1769-TD008 Compact I/O power supplies. -
Page 16: Rockwell Automation Support
Rockwell Otomasyon Ticaret A.Ş. Kar Plaza İş Merkezi E Blok Kat:6 34752, İçerenköy, İstanbul, Tel: +90 (216) 5698400 EEE Yönetmeliğine Uygundur Allen-Bradley, Compact I/O, CompactLogix, expanding human possibility, MicroLogix, and Rockwell Automation are trademarks of Rockwell Automation, Inc. Trademarks not belonging to Rockwell Automation are property of their respective companies.
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