Rockwell Automation 1771-P4R, 1771-P6R User Manual

Installation Instructions

AllenĆBradley Redundant Power Supplies

Cat. No. 1771ĆP4R and 1771ĆP6R

To the Installer

Important User Information

This document provides you with the following information:

For this information See page

Important user information 1

What this package contains 4

Tasks on installing your power supply module 4

How to interpret indicators 13

Flow charts for troubleshooting your power supply module 15

Power supply specifications 20

Because of the variety of uses for the products described in this publication, those responsible for the application and use of these products must satisfy themselves that all necessary steps have been taken to assure that each application and use meets all performance and safety requirements, including any applicable laws, regulations, codes and standards. In no event will Rockwell Automation be responsible or liable for indirect or consequential damage resulting from the use or application of these products.

Any illustrations, charts, sample programs, and layout examples shown in this publication are intended solely for purposes of example. Since there are many variables and requirements associated with any particular installation, Rockwell Automation does not assume responsibility or liability (to include intellectual property liability) for actual use based upon the examples shown in this publication.

Allen–Bradley publication SGI–1.1, Safety Guidelines for Application, Installation, and Maintenance of Solid–State Control (available from your local Rockwell Automation office), describes some important differences between solid–state equipment and electromechanical devices that should be taken into consideration when applying products such as those described in this publication.

Reproduction of the contents of this copyrighted publication, in whole or part, without written permission of Rockwell Automation, is prohibited.

Publication 1771-IN030B-EN-P - July 2002

Allen-Bradley Redundant Power Supplies2

Throughout this publication, notes may be used to make you aware of safety considerations. The following annotations and their accompanying statements help you to identify a potential hazard, avoid a potential hazard, and recognize the consequences of a potential hazard.

WARNING

ATTENTION

IMPORTAN

Identifies information about practices or circumstances that can cause an explosion in a hazardous environment, which may lead to personal injury or death, property damage, or economic loss.

Identifies information about practices or circumstances that may lead to personal injury or death, property damage, or economic loss.

Identifies information that is critical for successful application and understanding of the product.

Publication 1771-IN030B-EN-P - July 2002

Allen-Bradley Redundant Power Supplies 3

ATTENTION

Environment and Enclosure

This equipment is intended for use in a Pollution Degree 2 industrial environment, in overvoltage Category II applications (as defined in IEC publication 60664–1), at altitudes up to 2000 meters without derating.

This equipment is considered Group 1, Class A industrial equipment according to IEC/CISPR Publication 11. Without appropriate precautions, there may be potential difficulties ensuring electromagnetic compatibility in other environments due to conducted as well as radiated disturbance.

This equipment is supplied as “open type” equipment. It must be mounted within an enclosure that is suitably designed for those specific environmental conditions that will be present, and appropriately designed to prevent personal injury resulting from accessibility to live parts. The interior of the enclosure must be accessible only by the use of a tool. Subsequent sections of this publication may contain additional information regarding specific enclosure type ratings that are required to comply with certain product safety certifications.

See NEMA Standards publication 250 and IEC publication 60529, as applicable, for explanations of the degrees of protection provided by different types of enclosures. Also, see the appropriate sections in this publication, as well as the Allen–Bradley publication 1770–4.1, (“Industrial Automation Wiring and Grounding Guidelines”), for additional installation requirements pertaining to this equipment.

Publication 1771-IN030B-EN-P - July 2002

Allen-Bradley Redundant Power Supplies4

What This Package Contains

ATTENTION

Preventing Electrostatic Discharge

This equipment is sensitive to electrostatic discharge, which can cause internal damage and affect normal operation. Follow these guidelines when you handle this equipment:

• Touch a grounded object to discharge potential

static.

• Wear an approved grounding wriststrap.

• Do not touch connectors or pins on component

boards.

• Do not touch circuit components inside the

equipment.

• If available, use a static–safe workstation.

• When not in use, keep modules in appropriate

static–safe packaging.

When you receive your 1771-P4R or -P6R power supply, you should see the following in the box:

• one 1771-P4R or 1771-P6R power-supply module

• one 3-position terminal block (attached to module)

• one 5-position terminal block (attached to module)

• one redundant cable

Installing the PowerĆsupply Module

To install your power supply module you perform these tasks:

To perform this task See page

set the jumpers

set the I.D. selection and configuration switches 6

place the power supplies 7

connect the redundancy cables 8

wire the alarm relay 8

connect input power 10

Publication 1771-IN030B-EN-P - July 2002

Allen-Bradley Redundant Power Supplies 5

Set the Jumpers

Each power supply module has two jumpers located at the back of the power supply near the edge connectors. The jumper selection provides the proper voltage regulation for the different power supply configurations. The power supply can be configured to support local or remote sensing by setting the jumpers.

1. Locate the power supply jumpers on the back edge of the module near the gold-plated edge connectors:

19965

2. Position the power supply module so that the jumpers and pins are facing upward.

3. Use needle nose pliers to position the jumpers as shown in this table.

For this configuration Set jumpers to

All power supplies in a powerĆsupply chassis (1771ĆPSC) connected to an I/O chassis.

All other configurations. (These power supplies are shipped with jumpers set to the left.)

right position

left position

To avoid system malfunctions, set the jumpers

IMPORTAN

of power supplies in 1771 I/O chassis to the left position.

Publication 1771-IN030B-EN-P - July 2002

Allen-Bradley Redundant Power Supplies6

Switches Are set

1, 2, 3, 4

5, 6 based on the configuration zone

for the power supply identification number

Set the I.D. Selection and Configuration Switches

Each power supply in a redundant system must be assigned a different identification number. To do this, you must set the I.D. selection switches located on the left side of the module (shown below). A cutout in the metal cover of the module provides access to these switches.

I.D. Selection Switch

To set the switches:

1. Close the I.D selection switch (1, 2, 3, or 4) that represents the number you selected for that power supply.

2. Determine the configuration zone being used so you can set switches 5 and 6.

To determine the configuration zone, you must know the maximum chassis current draw and the ambient air temperature of the chassis.

Maximum Current Draw (A) Ambient Temperature Configuration Zone

0Ć8

8Ć14

14Ć16

16Ć20

20Ć24

55°C 60°C 55°C 60°C 55°C B 60°C C 55°C 60°C 55°C C 60°C

not permitted

3. Use the following table to position switches 5 and 6 based on the configuration zone you determined.

If Configuration Zone Is Set Switches

A B 5 CLOSED and 6 OPEN C 5 OPEN and 6 CLOSED

Publication 1771-IN030B-EN-P - July 2002

5 and 6 OPEN

Allen-Bradley Redundant Power Supplies 7

Place the Power Supplies

ATTENTION

You can place these power supply modules into any I/O module slot in any current chassis (1771-A1B, -A2B, -A3B, -A3B1,

-A4B, -PSC). The primary requirement for placing redundant power supplies is the need to allocate 2 to 4 adjacent slots in your 1771 I/O chassis for the modules.

IMPORTAN

WARNING

Turn off the power supply module before removing it from or inserting it into a chassis. Failure to observe this warning could alter processor memory, damage module circuitry, and cause unintended operation which could possibly cause injury to personnel.

You cannot use the 1771-P4R, -P6R power supplies with series A 1771 I/O chassis.

When you insert or remove the module while backplane power is on, or you connect or disconnect the wiring with field power applied, an electrical arc can occur. This could cause an explosion in hazardous location installations. Be sure power is removed or the area is nonhazardous before proceeding.

The power supply is a modular component of the 1771 I/O system requiring a properly installed system chassis. Refer to publication 1771–IN075 for detailed information on acceptable chassis, and proper installation and grounding requirements. Limit the adjacent slot power dissipation to 10W maximum.

Publication 1771-IN030B-EN-P - July 2002

Allen-Bradley Redundant Power Supplies8

Cable pt. no. A-B 941201-02 (supplied with power supply)

Connect the Redundancy Cables

The power supply redundancy cables (A–B pt. no. 941201–02) allow the power supplies to communicate load-sharing data. The two connectors on each supply are in parallel to permit three or four supplies to be daisy-chained together in a redundant system.

To connect the cables:

1. Connect the redundancy cable between the connectors labeled P/S REDUNDANT on the power supply as shown below.

Connecting the Redundancy Cables for a 2, 3, or 4 Supply System

2 powerĆsupply system 3 powerĆsupply system 4 powerĆsupply system

2. Loop the cable over the top of the I/O chassis to avoid picking up signals induced from I/O wiring.

WARNING

When you insert or remove the module while backplane power is on, or you connect or disconnect the alarm relay, ac power, or redundancy cable with field power applied, an electrical arc can occur. This could cause an explosion in hazardous location installations. Be sure power is removed or the area is nonhazardous before proceeding.

Wire the Alarm Relay

A 3-position terminal block labeled RELAY on the front panel of the module provides you with a means of communicating the status of the power supply to some alarm device. The contacts on the relay are rated at 1/6 HP, 250V ac, 1 Amp, 30V dc maximum.

The relay energizes within 0.5 seconds after sufficient input power is applied and no error conditions have been encountered. The error conditions include 5V output overvoltage, undervoltage, or overcurrent and internal reference error. The relay de-energizes within 10 seconds following detection of an error condition or loss of power. Contact bounce may occur for 100 ms.

Publication 1771-IN030B-EN-P - July 2002

+ 16 hidden pages