Allen-Bradley 1771-P7 Series C User manual

Installation Instructions
Publication 17715.39  December 1995
AC (120/220V) 16A
Power Supply
(Cat. No. 1771-P7 Series C)
This document provides you with the following information:
For this information See page
compliance European Union Directive 1
preparing to install the power supply 2
installing the power supply 3
connecting ac power to the power supply 7
troubleshooting 8
specifications 9
power ratings 9
The series C version of this product is marked with the
ÎÎ
ÎÎ
ÎÎ
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logo,
indicating that this version complies with the European Union
Directives noted below.
If this product has the CE mark it is approved for installation within
the European Union and EEA regions. It has been designed and
tested to meet the following directives.
EMC Directive
This product is tested to meet Council Directive 89/336/EEC
Electromagnetic Compatibility (EMC) and the following standards,
in whole or in part, documented in a technical construction file:
•EN 50081-2
EMC – Generic Emission Standard, Part 2 – Industrial
Environment
•EN 50082-2
EMC – Generic Immunity Standard, Part 2 – Industrial
Environment
This product is intended for use in an industrial environment.
To the Installer
Compliance to
European Union Directives

AC (120/220V) 16A Power Supply2
Publication 17715.39  December 1995
Low Voltage Directive
This product is also tested to meet Council Directive 73/23/EEC
Low Voltage, by applying the safety requirements of EN 61131–2
Programmable Controllers, Part 2 – Equipment Requirements
and Tests.
For specific information that the above EN requires, see the
appropriate sections in this publication, as well as the following
Allen-Bradley publications:
•Industrial Automation Wiring and Grounding Guidelines
(for noise immunity), publication 1770-4.1
•Guidelines for Handling Lithium Batteries, publication AG-5.4
•Automation Systems Catalog, publication B111
The 1771-P7 power supply can power one 1771-A1B, -A2B, -A3B,
-A3B1, or -A4B I/O chassis when used with any adapter module or
programmable controller (Mini-PLC-2/02, Mini-PLC-2/05,
Mini-PLC-2/16, Mini-PLC-2/17, or PLC-5family processor)
that does not have an internal power supply.
Important: The power supply is not compatible with the 1771-A1,
-A2, or -A4 I/O chassis.
!ATTENTION: The 1771-P7 is a stand-alone
power supply. Do not connect it in parallel with any
other power supply. Connecting it in parallel could
result in processor memory loss or injury due to
unexpected machine operation.
!ATTENTION: Under some conditions, electrostatic
discharge can degrade performance or damage system
components. Observe the following precautions to
guard against electrostatic damage:
•Touch a grounded object to rid yourself of charge
before handling a module.
•Do not touch the backplane connector or
connector pins.
•When not in use, keep modules in their
static-shield bags.
Prepare for Installation

AC (120/220V) 16A Power Supply 3
Publication 17715.39  December 1995
Before installing the power supply, you should:
•mount the I/O chassis that the power supply will be connected to.
See the Universal I/O Chassis Installation Data (1771-2.210) for
information on mounting the I/O chassis.
•set the power supply configuration jumper on the I/O chassis.
The 1771-P7 is an external power supply. Set the configuration
jumper to the N position.
NY
Using
Power
Supply
Module in
the Chassis?
12620I
The power supply has a D-shell power connector that provides
power to the I/O chassis backplane.
A1
3
4
5
A2
1
2
A1 backplane common
A2 backplane +5V dc
1 no connection
2 backplane processor enable
3 backplane +5V dc sense
4 backplane signal ground sense
5 no connection
bottom view of power supply 13445
If you have this I/O chassis Use this power cable To connect a 1771P7 mounted
1771A3B 1771CP2 within 1.52m (5ft) of the I/O chassis
1771 A1B A2B A3B1 A4B
1771CP1 within 0.32m (1.04ft) on the leftside of the I/O chassis
1771A1B, A2B, A3B1, or A4B 1771CP3
(right angle connector) within 1.68m (5.5ft) of the I/O chassis
Install the 1771P7 and
Connect Backplane Power

AC (120/220V) 16A Power Supply4
Publication 17715.39  December 1995
If you are mounting the power supply Go to
on the left side of a panelmounted I/O chassis next section
separately from an I/O chassis page 6
Attaching to a Panelmounted I/O Chassis
1. Attach the mounting screws to the side of the I/O chassis
as shown:
!ATTENTION: Use the mounting screws provided
with the 1771-P7. Longer screws may intrude into
the I/O chassis and interfere with module insertion.
large screw
lockwasher
shoulder washer
Tighten this screw.
two small screws
and lockwashers Loosely attach these screws.
leftside of I/O chassis
13446
2. Connect the power cable (ordered separately) to the D-shell
connector on the I/O chassis and tighten the connector screws.
Dshell connector
1771CP1 cable
connector screws leftside of I/O chassis
13447

AC (120/220V) 16A Power Supply 5
Publication 17715.39  December 1995
3. Slide the power supply onto the left side of the chassis, as shown:
1771P7
left side I/O chassis
Slide power supply down.
Place keyhole slot over
large screw on I/O chassis.
Make sure mounting brackets
are behind the small screws. 13448
4. Tighten the small screws to secure the power supply to the
I/O chassis.
small screws
1771P7
left side I/O chassis
12629I
5. Attach the other end of the power cable to the D-shell connector
on the bottom of the power supply and tighten the
connector screws.
connector screws
Dshell connector
1771CP1 cable
1771P7
left side I/O chassis
13449

AC (120/220V) 16A Power Supply6
Publication 17715.39  December 1995
Mounting the Power Supply Separately
When mounted separately, the power supply may be mounted above
or next to the I/O chassis. It may not be mounted below, since it is
necessary to allow convection cooling of both the power supply and
the I/O chassis. A minimum vertical distance of 6 inches should be
maintained.
1. Mount the power supply vertically, above and within the
specified cable-feet (for your cable) of the D-shell connector on
the I/O chassis.
Allow for a generous bend of the
1771CP2 or 1771CP3 cable to reduce
stress on the connectors mounted on
the chassis and the power supply.
Use the rear mounting flanges on the
power supply to mount it to a panel.
1771P7
15.2cm
(6")
12621I
2. Connect one end of the power cable (ordered separately) to the
D-shell connector located on the bottom of the power supply and
tighten the connector screws.
1771-CP2 or 1771CP3 cable
1771P7
connector screws
12622I

ON
POWER
OFF
115V
12625I
AC (120/220V) 16A Power Supply 7
Publication 17715.39  December 1995
3. Connect the other end of the power cable to the D-shell connector
on the I/O chassis and tighten the connector screws.
1771A1B, A2B, A3B1, A4B I/O chassis 1771A3B I/O chassis
1771-CP2
1771-CP3
12623I 12624I
The power supply operates on nominal120V ac or 220V ac
input source.
1. Make sure the power switch is set to OFF.
2. Use a 1/8” slotted screwdriver to set the input-voltage
selector switch.
!ATTENTION: To avoid damaging the power
supply, do not place the screwdriver blade more
than 3/8” into the switch slot.
For an input voltage of Set the voltage selector switch to
97 to 132V ac 115 position
115V
195 to 264V ac 230V
230 position
Connect ac Power Source
to the Power Supply

P/S
Active
12627I
AC (120/220V) 16A Power Supply8
Publication 17715.39  December 1995
3. Connect the ac power line to the terminal strip on the
power supply.
!ATTENTION: You must connect a 14 AWG wire
from the GND terminal to the ground bus to provide
an adequate safety ground.
Line 1
Line 2 or
neutral
Ground
Bus
ac power connectors
Grounding electrode
conductor
ac power
(customer
supplied)
➀A
3A 250V normalblow fuse protects the input line L1 from drawing more than 3 amperes.
14 AWG
L1
L2/N
GND
central ground bus (earth ground)
low side of the line power
high side of the line power➀
Connect
12626I
The power supply has a green P/S ACTIVE LED that provides status
indication during power supply operation.
Normal operation If indicator is Then
on off it may be due to:
•input voltage not within specified range
•blown fuse
•overcurrent
Important: If a shutdown condition occurs, wait 15 seconds before
attempting to apply power.
For additional assistance, contact your local Allen-Bradley
representative.
Troubleshooting

315mm
(12.40")
293mm
(11.53")
Depth is 159mm (6.25")
45mm
1.77"
115mm
(4.53")
12628I
AC (120/220V) 16A Power Supply 9
Publication 17715.39  December 1995
Nominal Input Voltage/Current 120V ac @ 2.0A
220V ac @ 1.0A
Input Voltage Range 120V ac: 97132V ac
220V ac: 195264V ac
Input Power (Real/Apparent) 108 Watts/176VA
External Transformer 270VA at full load
Frequency Range 4763Hz
Isolation Voltage 2500V dc for 1s
1800V ac (rms) for 1s input power to chassis ground
Output Voltage 5.06V dc ±3.8%
Output Current 16A max @ 5V dc
Power Loss Time Delay 
Input Power to Processor Disable 13.6msec ±2.9ms
Fuse 3A, 250V 3AG normal blow
(Bussmann AGC 3  Littelfuse 312003)
Screw Torque 12 poundinch
Weight 1.95kg (4.3 lbs.)
Dimensions (H x W x D) 315mm x 115mm x 159mm
(12.40" x 4.53" x 6.25" )
Environmental Conditions
Operating Temperature
Storage Temperature
Relative Humidity
32 to 140°F (0 to 60°C)
-40 to 185°F (-40 to 85°C)
5 to 95%, noncondensing
1771CP1
Cables 1771CP2
1771CP3
0.32m (1.04ft)  connects panel mounted I/O chassis
to chassis mounted 1771P7
1.52m (5ft)  connects rackmounted I/O chassis
to remote 1771P7
1.68m (5.5ft)  connects panelmounted I/O chassis
to remote 1771P7
Agency Certification
(when product or packaging
is marked)
Î
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marked for all applicable directives
Use these graphs to determine your:
•cooling requirements
•power cost
•transformer size (unless the transformer manufacturer has a
recommended multiplier for sizing a transformer for an ac-to-dc
power supply)
0
4
8
12
16
20 60 100 140 180
0
4
8
12
16
0 306090120
Apparent Power (VA) Real Power (Watts)
Backplane
Load Current
(Amps)
0
4
8
12
16
0 75 150 225 300
Transformer Sizing (VA) =
Real Power (Watts) x 2.5
PLC-2/02, PLC-2/05, PLC-2/16, and PLC-2/17 are trademarks of Allen-Bradley Company, Inc.
Specifications
Power Ratings

AC (120/220V) 16A Power Supply10
Publication 17715.39  December 1995
AllenBradley, a Rockwell Automation Business, has been helping its customers improve
productivity and quality for more than 90 years. We design, manufacture and support a broad
range of automation products worldwide. They include logic processors, power and motion
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AllenBradley Headquarters, 1201 South Second Street, Milwaukee, WI 53204 USA, Tel: [phone]2000 Fax: [phone]4444
Publication 17715.39  December 1995 PN 95512301
Copyright 1995 AllenBradley Company , Inc. Printed in USA