Allen-Bradley 1771-P2 Installations- und Benutzerhandbuch

9pin plugs

1771CE or CD cable

19568

Labels on each plug

identify proper connection.

Auxiliary Power Supply

(Cat. No. 1771-P2)

Installation Data

This document provides information on:

preparing to install the power supply

installing the power supply

connecting ac power to the power supply

power supply output

troubleshooting

specifications

The auxiliary power supply can power one bulletin 1771 I/O chassis

when used with an adapter module, a 1772 Mini-PLC-2processor, or a

1772 Mini-PLC-2/15processor.

The auxiliary power supply does not provide battery backup. For battery

backup, use a system power supply (cat. no. 1771-P1).

If You Are Mounting the Power Supply: Use this Power Cable (Cat. No.):

on the left side of the chassis 1771CE

within 5 cablefeet of the I/O chassis 1771CD

If you mount the power supply on the left side-plate of the I/O chassis,

mount the I/O chassis first (if you have not already done so). See the

Universal I/O Chassis Installation Data (publication 1771-2.210) for

information on mounting the I/O chassis.

When mounted separately, the power supply can be mounted above or next

to the I/O chassis. It can 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 six inches should be maintained.

To the Installer

Prepare for Installation

Install the Power Supply and

Connect Backplane Power

Installation Data

Auxiliary Power Supply

Cat. No. 1771P2

Mount the Power Supply

ATTENTION: If you do not remove system power, you could

damage the module circuitry and/or cause undesired operation

with possible injury to personnel.

1. Remove system power.

2. Mount the power supply.

If Mounting Separately: If Mounting on Left Side of Chassis:

use the rear flanges

to mount it to a panel.

Mount the power supply up to 5 cablefeet

from the I/O chassis.

11.25"

(285mm)

263mm

(10.37")

Depth is 182mm (7.16")

116mm

(4.56")

45mm

(1.8")

12593-I

Important: Do not mount the power supply below

the I/O chassis.

19569

Use the four screws supplied with the I/O chassis

to install the power supply onto the I/O chassis.

flat washer

screw

Important: Place the flat washers provided between each mounting

screw and the power supply. If you do not use the flat washers, the

mounting screw intrudes into the I/O chassis and interferes with

module insertion.

Installation Data

Auxiliary Power Supply

Cat. No. 1771P2

Connect Backplane Power

To connect backplane power:

1. Connect one 9-pin plug of the power cable to the 9-pin connector

located on the bottom of the power supply.

19570

9pin socket

9pin plug

1771CE or CD cable

2. Connect the other 9-pin plug to the external power supply connector

on the I/O chassis. To make this connection, remove the

processor/adapter module and left-most I/O module from the

I/O chassis.

1 +5.1V dc

2 +5.1V dc

3 chassis ground

4 common

5 common

6 battery low

7 +battery

8 +5V dc memory

9 processor enable

123

456

789

External Power Supply Connector

9pin plug

1771CE or CD cable

1771A2B Series B I/O chassis

Route the power cable through the

bottom of the I/O chassis so that

it does not interfere with the insertion

of the processor/adapter module.

12594I

120V ac

EQUIP

. GND

SPARE

220/240V ac

120V ac

SPARE

120V

Operation

11939

EQUIP.

GND

SPARE

220/240V ac

120V ac

SPARE

220/240V

Operation

metal jumper

120V ac

ac line

120 V ac 1A SB

220/240 V ac 0.5A SB

Installation Data

Auxiliary Power Supply

Cat. No. 1771P2

Before connecting ac power to the power supply, you must:

check the input voltage

check the fuse protection

Check the Input Voltage

The power supply is factory-shipped for 120V ac operation. You can use:

120V ac

220/240V ac

Two metal jumpers are installed on the front terminal strip at the positions

indicating 120V ac.

ATTENTION: Be sure the power supply is correctly jumpered

for either 120V ac or 220/240V ac. Incorrect jumpering on the

terminal strip may cause improper operation or damage to the

power supply.

If you are using the power supply for 220/240V ac operation, remove both

metal jumpers on the terminal strip from their original 120V positions.

Install one of these jumpers at the terminal labeled 220/240V ac.

Check the Fuse Protection

The power supply is protected from overcurrent at its inputs by a

slow-blow fuse. The power supply comes with one 1A slow-blow fuse

installed for 120V operation. If you are using the power supply for

220/240V operation, remove the 1A fuse and replace it with the 0.5A

slow-blow fuse that is provided. Replacement fuses are shown below:

Input Voltage Fuse Manufacturer's No.

120V ac 3AG

Bussman: MDL 1A

Littelfuse: 313001

220/240V ac 3AG

0.5A

Bussman: MDL 0.5A

Littelfuse: 313.500

A replacement fuse kit (cat. no. 1771-FP) containing both 1A and 0.5A

fuses is available. Contact your local Allen-Bradley representative for

further information.

Connect AC Power

Installation Data

Auxiliary Power Supply

Cat. No. 1771P2

Connect AC Power Line

The power supply monitors input voltage for proper operating levels.

If Using the Power Supply for: Normal Input Range1:Minimum Voltage:

120V ac operation 98 to 132V ac 92V

220/240V ac operation 196 to 250V ac 184V

If input power is interrupted, the power supply signals the processor to restart automatically when the input

line is restored to the normal ac input range (98V for 120V use, or 196V for 220/240V use).

AC input line connections for either 120V ac or 220/240V ac are made to

the terminals marked L1 and L2. Use the grounding stud located on the

bottom of the power supply to connect the power supply to the system

ground bus. If you cannot do this, connect an equipment grounding

conductor to EQUIP. GND.

19573

120V ac

EQUIP. GND

SPARE

120V ac

SPARE

equipment ground

high side of the line power

low side of the line power

220/240V ac

When you connect grounding conductors to

the power supply grounding stud, place a star

washer under the first lug, then place a nut with

captive lock washer on top of each ground lug.

1Use

the cup washer if crimpon lugs are not used.

grounding stud

ground lug

nut with captive washer

star washer

ground lug1

In applications where the ac line is especially unstable and subject to

unusual variation, a constant voltage transformer can be used to stabilize

the input voltage to the power supply as well as the input voltage to user

devices. If a constant voltage transformer is used, it must have filtering to

remove high harmonic content and provide a sinusoidal output.

The minimum size required for any type of external transformer feeding

the power supply is 160VA at full loading of the power supply.

D.C.

12596I

Installation Data

Auxiliary Power Supply

Cat. No. 1771P2

For information concerning the handling of fault conditions due to

temporary loss of input line voltage to the power supply, consult the

documentation supplied with the device (remote I/O adapter,

Mini PLC-2/15 processor, etc.) that is controlling the I/O chassis.

The auxiliary power supply provides 5.1V dc with a maximum output

current of 6.5A. See your I/O module data sheets for specific current

requirements.

Power supply outputs have built-in monitoring circuitry to protect logic

circuitry in the I/O modules and the processors. During power-up and

normal operation, outputs are checked for these conditions:

overvoltage

undervoltage

overcurrent

The power supply shuts down if any of these conditions are detected.

If this occurs, cycle ac power to the supply. To do this, disconnect and

then reconnect user-line power, preferably from the user-supplied main

disconnect switch mounted near the power supply.

The power supply has a D.C. ON LED indicator that provides status

indication during power supply operation.

Normal Operation If indicator is: Then:

D.C. ON

on off it may be due to:

•input voltage level not within specified range

•blown fuse

•overcurrent

For additional assistance, contact your local Allen-Bradley representative.

Power Supply Output

Troubleshooting

Installation Data

Auxiliary Power Supply

Cat. No. 1771P2

Nominal Input Voltage/Current 120V ac @ .75A

220/240V ac @ .38A

Input for 120V operation

Voltage Range for 220/240V operation

98132V ac

196250V ac

Input Power real

apparent

65W @ full load

90VA @ full load

External Transformer (if used) 160VA @ full load

Frequency Range 60/50Hz

Isolation Voltage 2500V dc for 1s

1800V rms for 1s input power to equipment/chassis ground

Output logic circuitry

Voltage memory

5.1V dc ±5%

Output Current 6.5A maximum @ 5V dc

Power Loss Time Delay 

Input Power Loss to Processor Disable

13.5ms ±2.5ms

Replacement for 120V operation

Fuses for 220/240V operation

1A, 3AG (slow blow); Bussmann MDL 1  Littelfuse 313001

0.5A, 3AG (slow blow); Bussmann MDL 0.5  Littelfuse 313.500

Weight 5.89 kg (13 lbs)

Dimensions (W x H x D) 11.6cm x 28.6cm x 18.2cm

(4.56" x 11.25" x 7.16")

Environmental Operating Temperature

Conditions: Storage Temperature

Relative Humidity

0 to 60°C (32 to 140°F)

40 to 85°C (40 to 185°F)

5 to 95%, noncondensing

Location left side of 1771 I/O chassis or 5 cablefeet from I/O chassis

Cables 1771CD

1771CE

1.52m (5 ft)  connects I/O chassis to panel mounted 1771P2

.30m (1 ft) - connects I/O chassis to chassis mounted 1771P2

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 255075100

0 20406080

Apparent Power (VA) Real Power (Watts)

Backplane

Load Current

(Amps)

0 50 100 150 200

Transformer Sizing (VA) =

Real Power (Watts) x 2.5

PLC-2 and PLC-2/15 are registered trademarks of Allen-Bradley Company, Inc.

Specifications

Installation Data

Auxiliary Power Supply

Cat. No. 1771P2

With offices in major cities worldwide

WORLD

HEADQUARTERS

Allen-Bradley

1201 South Second Street

Milwaukee, WI 53204 USA

Tel: (1) 414 382-2000

Telex: 43 11 016

FAX: (1) 414 382-4444

EUROPE/MIDDLE

EAST/AFRICA

HEADQUARTERS

Allen-Bradley Europe B.V.

Amsterdamseweg 15

1422 AC Uithoorn

The Netherlands

Tel: (31) 2975/43500

Telex: (844) 18042

FAX: (31) 2975/60222

ASIA/PACIFIC

HEADQUARTERS

Allen-Bradley (Hong Kong)

Limited

Room 1006, Block B, Sea

View Estate

28 Watson Road

Hong Kong

Tel: (852) 887-4788

Telex: (780) 64347

FAX: (852) 510-9436

CANADA

HEADQUARTERS

Allen-Bradley Canada

Limited

135 Dundas Street

Cambridge, Ontario N1R

5X1

Canada

Tel: (1) 519 623-1810

FAX: (1) 519 623-8930

LATIN 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 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 1771-2.7 — December 1992

Supersedes 1771-2.7 — July 1984 PN 955113-24

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