Allen-Bradley 1771-P4S User manual

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Power Supply Modules
(Cat. No. 1771-P4S, -P6S, -P6S1, -P6S1)
Installation Data
1
AllenBradley
Power Supply Modules
(cat. no. 1771-P4S, -P6S, -P4S1, -P6S1)
This document provides you with the following information:
what this package contains
tasks on installing your power supply module
interpreting the power supply indicators
troubleshooting your power supply
When you receive your power supply, you should see the following
components in the box:
one 1771-P4S, -P6S, -P4S1, or -P6S1 power supply module
one 5-position terminal block (attached to module)
To install your power supply, you need to know how to perform the
following tasks:
set the jumpers
place the power supply in a chassis
connect a paralleling cable (if using a second supply)
connect input power
Set the Jumpers
Each power supply module has two jumpers located at the back edge of the
module near the gold-plated 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.
To the Installer
What This Power Supply
Package Contains
Installing the Power Supply
Module
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Power Supply Modules
(Cat. No. 1771-P4S, -P6S, -P6S1)
Installation Data
2
To configure the supply:
1. Position 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 set the
jumpers.
Table A
Jumper Settings
For This Configuration Set Jumpers to:
A single power supply in a powersupply chassis
connected to an I/O chassis through a power cable.
right position
All other configurations. (Power supplies are
shipped with jumpers in this position.)
left position
Place the Power Supply in a Chassis
WARNING: Turn off all power-supply modules before
removing modules from or inserting modules 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.
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Power Supply Modules
(Cat. No. 1771-P4S, -P6S, -P6S1, -P6S1)
Installation Data
3
You can place these power-supply modules into any I/O module slot in any
current chassis (1771-A1B, -A2B, -A3B, -A4B, -A3B1, -PSC).
However, to place these power-supply modules into a superseded I/O
chassis (1771-A1, -A2, -A4), you must follow the restrictions in table B.
Table B
Placement Restrictions in Superseded I/O Chassis (1771A1, A2, A4)
Adapter or
Inchassis
processor
I/O
Chassis
1st
Power Supply12nd Power Supply1
Without A4 I/Oslot 0 I/Oslot 10
an integral
power supply
A2 I/Oslot 0 I/Oslot 4
power supply A1 I/Oslot 0 not applicable
With an integral A4 not applicable I/Oslot 8
g
power supply A2 not applicable I/Oslot 3
1I/O
module slots are numbered 0 through 15, left to right.
Connect a Paralleling Cable
You can use two power supplies in the same I/O chassis to produce more
power by connecting them with a Power-Supply Paralleling Cable
(1771-CT). This connection is for communication between the two
supplies. If one supply has to shut down, it tells the second to turn off its
indicator. Although the adapter or in-chassis processor will be disabled, the
second supply will continue trying to operate until its DC output limits are
exceeded. Because the adapter or in-chassis processor is disabled,
paralleling two supplies does not provide redundancy.
To connect the paralleling cable:
1. Connect the paralleling cable between the P/S PARALLEL
connectors on the two supplies (figure 2).
2. Loop the paralleling cable over the top of the I/O chassis to avoid
picking up signals induced from I/O wiring.
3. Turn on the supplies simultaneously. If you don’t, the first supply you
turn on may shut down due to an overcurrent condition.
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Power Supply Modules
(Cat. No. 1771-P4S, -P6S, -P6S1)
Installation Data
4
Figure 2
Paralleling Cable and AC Power Connections
Connect Input Power
Figure 2 shows the overall configuration of the ac power connections.
To make ac power connections:
1. Connect the high side of the power source to the L1 terminal of the
power supply.
2. Connect the low side of the power source to the L2 or N (neutral)
terminal of the power supply.
3. Connect the GND (ground) terminal of the power supply to the
central ground bus in the enclosure.
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Power Supply Modules
(Cat. No. 1771-P4S, -P6S, -P6S1, -P6S1)
Installation Data
5
Figure 3 shows details of how to connect a wire to a terminal on the
terminal block. You can connect these wires while the terminal block is
plugged into the supply, or you can remove the block to lay it on a flat
surface to connect these wires. To remove the block, pull it straight out out
from the receptacle on the module.
The 2 undesignated terminals do not connect to any electrical circuit on the
module and are not used. Each of the three functional terminals accepts a
single 14-AWG wire max.
To connect a wire to a terminal:
1. Strip 0.35 inches of insulation off the wire.
2. Spring the clip open to insert the wire, using a wedge-tipped tool such
as a small screwdriver. If you leave the terminal block plugged into
the supply, insert the tool parallel to the wire (push straight in). If you
remove the terminal block and 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. Be sure that the plug is completely inserted and that
the locking prongs are engaged.
Figure 3
Connecting a W ire to a Terminal
Your power supply has an indicator located in the upper half of the module
front panel labeled P/S ACTIVE. Table C shows how to interpret the P/S
ACTIVE indicator.
Interpreting the Power Supply
Indicators
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Power Supply Modules
(Cat. No. 1771-P4S, -P6S, -P6S1)
Installation Data
6
Table C
Interpreting the P/S ACTIVE Indicator
If the indicator
Is:
Then:
On The power supply (and any supply connected through a paralleling cable) is
operating normally. However, it could still have a poor connection to the
backplane.
Off The supply has detected one of the following conditions:
Gdc overvoltage (the supply shuts down)
Gdc undervoltage (the supply shuts down)
Gdc overcurrent (the supply shuts down)
Gpower switch turned off (the supply is turned off)
Gac undervoltage
Gthe paralleled supply is shut down
With ac undervoltage or a paralleled supply shut down, the supply will still
attempt to generate the output. When dc limits are exceeded, the supply shuts
down until you turn power off (for 5 seconds minimum) and then back on.
If you have a single power supply installed in an I/O chassis and its P/S
ACTIVE indicator is off, verify the ground connection to the supply; then
follow this troubleshooting flow chart.
Troubleshooting a Single
Power Supply
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Power Supply Modules
(Cat. No. 1771-P4S, -P6S, -P6S1, -P6S1)
Installation Data
7
If you have a pair of power supplies installed in parallel in an I/O chassis
and the P/S ACTIVE indicators are off, verify the ground connection to
each supply; then follow this troubleshooting flow chart.
Troubleshooting Parallel
Power Supplies
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Power Supply Modules
(Cat. No. 1771-P4S, -P6S, -P6S1)
Installation Data
8
Specifications
1771P4S 1771P6S 1771P4S1 1771P6S1
Input Voltage 120V ac 220V ac 100V ac 200V ac
Input Range 97 132V ac rms 194 - 264V ac rms 85 - 120V ac rms 170 - 240V ac rms
Frequency 47 - 63 Hz 47 - 63 Hz 47 - 63 Hz 47 - 63 Hz
Fuse 1.5A 250V Slowblow
Output Voltage (Backplane) 5V dc
Output Current (max) 8A
Wire Size 14 AWG max (single wire only)
Environmental Conditions Operational Temperature: 0 to 60°C (32 to 140 °F)
Storage Temperature: 40 to 85°C (40 to 185 °F)
Relative Humidity: 5 to 95% (without condensation)
Physical Width 1 I/O chassis slot
Weight 1.85 lbs (0.84 kg)
5position Terminal Block AB P/N 94127405, Wago 1 P/N 231205/000008 (1 included with each power supply)
1Wago
Corporation 9085 N. Deerbrook T rail, Brown Deer WI 53223
With offices in major cities worldwide
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Allen-Bradley
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Tel: [phone]
Telex: 43 11 016
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HEADQUARTERS
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5X1
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HEADQUARTERS
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Tel: [phone]
Telex: 43 11 016
FAX: [phone]
As a subsidiary of Rockwell International, one of the world’s largest technology
companies — Allen-Bradley meets today’s challenges of industrial automation with over
85 years of practical plant-floor experience. More than 11,000 employees throughout the
world design, manufacture and apply a wide range of control and automation products
and supporting services to help our customers continuously improve quality, productivity
and time to market. These products and services not only control individual machines but
integrate the manufacturing process, while providing access to vital plant floor data that
can be used to support decision-making throughout the enterprise.
Publication 1771–2.135–February 1990
Supersedes Publication 1771–2.135–Febuary 1989 PN 955106–86 Copyright 1992 Allen-Bradley Company, Inc. Printed in USA
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