Allen-Bradley 1771-P4R Installation Data Download Page 4

Power Supply Modules

(Cat. No. 1771P4R and P6R)

Installation Data

4

Table C

Switch Positions

If Configuration Zone Is

Set Switches:

A

5 and 6 OPEN

B

5 CLOSED and 6 OPEN

C

5 OPEN and 6 CLOSED

Place the Power Supplies

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 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 1771I/O chassis for the modules.

Important:   Series A I/O chassis CANNOT be used with 1771-P4R,
-P6R modules.

Connect the Redundancy Cables

The power supply redundancy cables 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 in figure 

3

.

2.

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

Summary of Contents for 1771-P4R

Page 1: ...ve 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...

Page 2: ...on the power supply module so that the jumpers and pins are facing upward as shown in figure 1 Figure 1 Power Supply Jumpers 2 Set the jumpers as shown in table A Use needle nose pliers to position th...

Page 3: ...are set based on the configuration zone To set the switches follow this procedure 1 Close the I D selection switch 1 through 4 that represents the number you selected for that power supply 2 Determine...

Page 4: ...hassis 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 1771I O chassis for the modules Important Series...

Page 5: ...status of the power supply to some alarm device The contacts on the relay are rated at 1 Amp 250V ac maximum The relay energizes within 0 5 seconds after sufficient input power is applied and no erro...

Page 6: ...e relay contacts open until unit failure when it will close Using the normally open side of the relay will keep the relay contacts closed until unit failure when it will open To wire the relay place t...

Page 7: ...block An error here could cause the ac to be applied to the chassis WARNING Check that the input voltage rating on the power supply front panel agrees with the available power source Application of t...

Page 8: ...nd lay it on a flat surface insert the tool perpendicular to the wire push straight down 3 After making the wiring connections re insert the terminal block into the front plate if you removed it Be su...

Page 9: ...power supplies is operational for the system configuration Off The supply has detected one of the following conditions G dc overvoltage the supply shuts down G dc undervoltage the supply shuts down G...

Page 10: ...I D selection switch setting 1 through 4 configuration switch setting 5 and 6 jumper setting local or remote sensing input voltage rating on the front panel near the ac input connector You will set t...

Page 11: ...at No 1771 P4R and P6R Installation Data 11 Troubleshooting a Single Power Supply If you have a single power supply installed in an I O chassis and its P S ACTIVE indicator is off follow the troublesh...

Page 12: ...ple power supplies refer to the flowcharts on the next three pages to help you troubleshoot when the following problems occur Problem 1 One or more but not all of the supplies in the redundant system...

Page 13: ...wer Supply Modules Cat No 1771 P4R and P6R Installation Data 13 Problem 2 All the supplies in the redundant system have their P S ACTIVE indicators off The NON REDUNDANT SYSTEM LED may or may not be o...

Page 14: ...at No 1771 P4R and P6R Installation Data 14 Problem 3 All P S ACTIVE indicators show that the power supplies are OK but one or more NON REDUNDANT SYSTEM indicators are on indicating the desired redund...

Page 15: ...AWG maximum single wire only 21 Environmental Operating Storage Relative Humidity 0 to 60 C 32 to 140 F 40 to 85 C 40 to 185 F 5 to 95 without condensation Wiring Blocks ac Power Relay A B part numbe...

Page 16: ...N AMERICA HEADQUARTERS Allen Bradley 1201 South Second Street Milwaukee WI 53204 USA Tel 1 414 382 2000 Telex 43 11 016 FAX 1 414 382 2400 As a subsidiary of Rockwell International one of the world s...

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