Allen-Bradley PLC-3 Series User manual

Quick Start
for Experienced
Users
PLC3 Family
Programmable
Controllers
AllenBradley
product icon

Because of the variety of uses for the products described in this
publication, those responsible for the application and use of this
control equipment 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.
The illustrations, charts, sample programs and layout examples
shown in this guide are intended solely for purposes of example.
Since there are many variables and requirements associated with any
particular installation, Allen-Bradley 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 the
Application, Installation, and Maintenance of Solid-State Control
(available from your local Allen-Bradley 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 in part, without written permission of Allen-Bradley
Company, Inc., is prohibited.
Throughout this manual we use notes to make you aware of safety
considerations:
!ATTENTION: Identifies information about practices
or circumstances that can lead to personal injury or
death, property damage or economic loss.
Attention statements help you to:
•identify a hazard
•avoid the hazard
•recognize the consequences
Important: Identifies information that is critical for successful
application and understanding of the product.
Important User
Information

Overview P-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Using this Quick Start P-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
What You Need to Do P-1
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
System Components used in this Quick Start P-2
. . . . . . . . . . . . . . . .
IfY
ou Need Help ... P-3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Configure and Ground I/O and Processor Chassis 1-1. . . . . . .
Configure I/O Chassis 1-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Configure Processor Chassis 1-2
. . . . . . . . . . . . . . . . . . . . . . . . . . .
Ground Processor and I/O Chassis 1-2
. . . . . . . . . . . . . . . . . . . . . . .
Install Power Supply 2-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Install1775P3 Power Supply into the PLC3/10
(or singlechassis PLC3) 2-1
. . . . . . . . . . . . . . . . . . . . . . . . . . .
Install1775P1 Power Supply into the PLC3 2-3
. . . . . . . . . . . . . . . .
InstallProcessor , Memory , and Scanner Modules 3-1. . . . . . .
Connect Front Panel Cable and Install Processor 3-1. . . . . . . . . . . . .
InstallMemory Module(s) 3-1
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
InstallI/O Scanner Module(s) 3-2
. . . . . . . . . . . . . . . . . . . . . . . . . . .
Install,Wire, and Connect I/O 4-1. . . . . . . . . . . . . . . . . . . . . . .
Installand Wire I/O Modules 4-1. . . . . . . . . . . . . . . . . . . . . . . . . . . .
Connect
I/O 4-2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Configure a Personal Computer 5-1. . . . . . . . . . . . . . . . . . . . .
Configure and Connect 1770T4 Programming Terminal 5-1. . . . . . . .
Connect to Personal Computer 5-2
. . . . . . . . . . . . . . . . . . . . . . . . . .
Troubleshooting and Specifications 6-1. . . . . . . . . . . . . . . . .
Powersupply Module Indicators 6-1. . . . . . . . . . . . . . . . . . . . . . . . .
Specifications 6-1
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Table of Contents

Preface
Publication 177510.1 - March 1996
Overview
This quick start is designed to help you quickly install and connect a
basic PLC-3 family programmable controller system. Use this guide
if you are knowledgeable about PLC-3 family products but may not
have used one or more of the products for a period of time. The
information we provide is geared to “jog your memory.”
b
step 1
2
3
step
step
a
b
a
Configure I/O chassis
(page 11)
Ground I/O chassis
(page 11)
a
b
Install 1775P3 power supply
(page 21)
Install memory module(s)
(page 41)
Install I/O scanner module(s)
(page 42)
Install the processor module
(page 41)
Install 1775P1 power supply
(page 23)
Connect front panel cable
(page 31)
For more information, see the PLC3 Programmable Controllers
Installation and Operations Manual, publication 17756.7.1.
PLC3
Controller
1775S5
Scanner
1775SR5
Scanner
PLC3/10
Controller
DH +
Link
For more
information...
cConfigure processor chassis
(page 41)
c
d
Install I/O and Processor Chassis
Install Power Supply
Install Modules
Using this Quick Start
What You Need to Do

OverviewP–2
Publication 177510.1 - March 1996
4step
a
b
5step
Install and wire I/O modules
(page 51)
Connect I/O to scanner
(page 52)
Configure and connect a programming terminal
(page 61)
Install and Connect I/O
Product name: Catalog number:
I/O chassis 1771A1B, A2B, A3B, A4B
power supply •1775P3 (PLC3/10)
•1775P1, P3 (PLC3)
processor chassis •1775A1, A2 (PLC3)
•1775A3 (PLC3/10)
front panel cable 1775CAK
processor •1775L4 (PLC3/10)
•1775L3 (PLC3)
memory module(s) •1775MS4, MS8, MSA, MSD (PLC3/10)
•1775ME4, ME8, MEA, MED, MEF (PLC3)
I/O scanner module(s) 1775S4A, S4B, S5, SR5, SR
I/O modules 1771IE
programming terminal 1770T4, 1784T45, T47, T50, IBMcompatible PC
using 6200 or AI series PLC3 programming software
PLC3 industrial terminal cable 1775CAT
Belden 8723 cable or equivalent 1778CR
25pin male connector kits 1770XXP
DH+ cable 1784CP
System Components
used in this Quick Start

Overview P–3
Publication 177510.1 - March 1996
If you need additional assistance in installing or connecting your
PLC-3 family programmable controller system, start with the
troubleshooting section in the appendix of this quick start. If you still
experience difficulty, call 1-800-9NEWLIT to order one of the
publications suggested below or contact your Allen-Bradley service
representative.
Publication title: Publication number:
PLC3 Programmable Controllers Installation and Operation Manual 17756.7.1
PLC3 Family Programmable Controllers Programming Reference Manual 17756.4.1
AllenBradley PLC3 Power Supply (1775P1) Product Data 17752.4
PLC3, 3/10 Family Memory Modules Installation Data 17752.27
PLC3/10 Power Supply Module Installation Instructions 17755.1
PLC3 Family I/O Scanner CommunicationAdapter Module User Manual 17756.5.5
I/O ScannerProgrammer Interface Module User's Manual 17756.5.2
I/O ScannerMessage Handling Module 17756.5.3
PLC3 Programmable Controller Backup Systems User Manual 1775-6.3.1
AB
If You Need Help ...

Step 1
Publication 177510.1 - March 1996
Configure and Ground I/O and
Processor Chassis
Configure I/O Chassis
12345678
O
N
O
F
F
First I/O group number
I/O rack number
Address Switch Assembly
(S1)
Switch Assembly (S2) Pressed in at top
Closed (ON)
Pressed in at bottom
Open (OFF)
O
N
O
F
F
1234 56
Switch Position
1 2
57.6K Baud  10,000ft
1 15.2K Baud  5,000ft
Not Used
Maximum I/O
chassis distance Link Response  ON for series B emulation
Scan  On for all but last 4 slots
Off for all slots
OFF for unrestricted
Always OFF
ATTENTION: Link response switch must
be ON when using the following scanner modules:
1775S4A
1775S4B
1775S5
1775SR5
1775SR
ON OFF
OFF OFF
ON ON
ON
230.4K Baud  2,500ft
1
OFF
1230.4K
Baud with 1775S5 revision A/G and
later , and 1775SR5 revision A/G and later
scanners only.
Off
Set the backplane switches.
a
Keying
Bands
Install keying bands.
b1771 I/O
Module
See the appropriate product data for the module
you are installing to determine the proper keying
positions for each module.

1–2 Configure and Ground I/O and Processor Chassis
Publication 177510.1 - March 1996
Configure Processor Chassis
Set the backplane switches located near the upper lefthand corner of the chassis backplane.
If you:
are not using expansion chassis
are using expansion chassis
number the chassis:
set the chassis number to 0
(processor module must be in chassis 0)
consecutively starting with 0
O
N
O
F
F
Switch:
123
Chassis Number
on
off
on on
onoff
off
off off
off
off
off
0
1
2
3
ATTENTION: Number the chassis so that chassis o and the highest
numbered chassis have the same power supply . Failure to configure the
chassis in this way could result in unpredictable operation.
Ground Processor and I/O Chassis
Enclosure
Grounding electrode conductor
To grounding
electrode
system
Ground
bus
I/O chassis wall
Ground
lug Nut
Star
washer
Ground lug

Step 2
Publication 177510.1 - March 1996
Install Power Supply
Install 1775P3 Power Supply into the PLC3/10
(or singlechassis PLC3)
a
PLC3/10 chassis
CF2
CF1
backplane
20417M
Feed the dc power cable under the
module guides along the backplane.
Install the dc power cable.
Squeeze the side tabs of the plugs
as you connect them to the backplane.
bPlug the cable assembly into the connectors on the powersupply module,
connect the 8pin control connector cable to the power supply module, and
insert the power supply module in the rightmost slot of the chassis.
PLC3/10 chassis
20418M
Insert and tighten all six screws
on the outside of the chassis.
P2 P1
1775P3
powersupply
module
Squeeze the side tabs of the plugs
as you connect them to the module.
Connect the cable
at the 8pin connector.
When you install the 1775P3 power supply into a PLC3/10, if
there is a jumper plug (PN 96744701) installed on the
8pin controlconnector terminals, remove and discard it.

2–2 Install Power Supply
Publication 177510.1 - March 1996
Selector Switch Selector Switch
230V
115V
230V
115V
Terminal Strip Terminal Strip
L1
N
115V AC
L1
L2/N
GND
N.C.
COM.
N.O.
L1
L2
230V AC
L1
L2/N
GND
N.C.
COM.
N.O.
115V ac operation 230V ac operation
20419M
cSet
the voltage switch for the proper range.
!ATTENTION: Be
sure to set the voltage selection switch
properly or you may damage the powersupply module.
dConnect
the ac power line to the terminal strip on the power supply module
and connect any relay wires, then insert the PLC3/10 module(s) into the
chassis and turn the ac power on.
e
Close the front door of the chassis and rotate the two retaining
screws approximately 21/2 turns counterclockwise.
f
Indicator Normal Operation Means
AC ON
AC OK
DC OK
red
green
green
ac power is supplied to the unit
ac line voltage is equal to or greater
than the required minimum ac voltage
the supply's internal dc voltages
are in their proper operating range
Turn on dc power and make sure the indicators on the
powersupply module are lit as follows:
If you don't see this, refer to chapter 8 for troubleshooting information.