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.

2–3 Install Power Supply
Publication 177510.1 - March 1996
Install 1775P1 Power Supply into the PLC3
aConnect the 1775CAP chassis power cable to the processor chassis.
bOptionally, connect the I/O chassis to the power supply using an I/O power cable.
cMake AC power connections.
Power Cable
L2
120V ac
L1
L2
220/240V ac
L1
Jumpers Jumper
(a) 120V ac Operation (b) 220/240V ac Operation
W e do not recommend this connection
for backup system configurations.

Step 3
Publication 177510.1 - March 1996
Install Processor, Memory, and
Scanner Modules
Connect Front Panel Cable and Install Processor
Install the processor in the first slot on the left of the chassis for the best heat dissipation.
You must install the processor in the chassis numbered 0 if you are using expansion chassis.
Install Memory Module(s)
aRemove power to the processor chassis.
bInsert the memory module into the processor chassis, guiding the
module into the plastic tracks on the top and bottom of the slot.
cSnap the chassis latch over the top of the module to secure its position.
dSet the thumbwheel switch. If you are installing:
one memory module
more than one memory module
1
consecutively , starting at 1
Set the thumbwheel switch(es):
(for PLC3 processor only)

3–2 Install Processor, Memory, and Scanner Modules
Publication 177510.1 - March 1996
Install I/O Scanner Module(s)
aSet
each thumbwheel switch to a unique number between 1 and 15.
b
You must have a scanner with the thumbwheel set for 1. If you are installing a
multiple chassis PLC3 system, the scanner module whose thumbwheel you set
to 1 must be in the chassis with the front panel.
Set the necessary switches for your application of the scanner module.
For information about switch settings, see the user manual for your
particular scanner module. Some examples of switch settings for
scanner modules include backup options, DH+ communication,
station number identification, and termination.
For more
information...
cInstall the scanner module into any slot of the processor chassis.
!ATTENTION: Do
not change the thumbwheel setting on a scanner
while power is on or equipment damage may result.

Step 4
Publication 177510.1 - March 1996
Install, Wire, and Connect I/O
Install and Wire I/O Modules
f
aOpen each module locking bar and insert each I/O module into the slot
keyed for it. After you install each module group, secure the modules in
place with the module locking bar.
b
c
d
e
Snap each field wiring arm onto the the horizontal bar on the lower front
edge of the I/O chassis, then swing each arm up to connect on the front
edge of its module, pushing each arm until the locking tab holds it in place.
Remove the terminal cover from each wiring arm and connect the wires be
tween the I/O devices and the wiring arm terminals.
Trim and strip the wires as necessary, and make certain that each wire is firmly in place.
See chapter 3 of the PLC3 Programmable Controllers Installation and Operation Manual,
publication 17756.7.1, for more information.
For more
information...
Connect the power and ground wires.
Use tie wraps to gather the wires at each wiring arm, then bundle the
wires so the arms can pivot freely.
Replace the terminal covers and label the terminal status indicators appropriately.
For more
information... Specific
wiring information for each type of I/O module is contained in the product
data publication for that specific module. Therefore, refer to the appropriate product data
publication when you follow these steps.

4–2 Install, Wire, and Connect I/O
Publication 177510.1 - March 1996
Connect I/O
Connect the I/O scanner to the RIO adapters.
Line 1
Shield
Lin 2
Line 1
Shield
Lin 2
Line 1
Shield
Lin 2
Line 1
Shield
Lin 2
Channel
No. 4
Channel
No.2
Channel
No. 3
Channel
No.1
Blue
Shield
Clear
Blue
Shield
Clear
Blue
Shield
Clear
Blue
Shield
Clear
Terminator
(Cat. No. 1770-XT)
Optonal User-supplied
Pushbutton for
I/O Chassis Restart
Optonal User-supplied
Pushbutton for
I/O Chassis Restart
Terminator
(Cat. No. 1770-XT)
Twinaxial Cable
(Cat. No. 170-CD)
10,000 cable feet max.
I/O Adapter Module
Field Wiring Arm
I/O Adapter Module
Field Wiring Arm
I/O Scanner Module
Swing Arm

Step 5
Publication 177510.1 - March 1996
Configure a Personal
Computer
Configure and Connect 1770T4 Programming Terminal
Set the terminal switches.
a
Set switches 4 and 5 to the UP position.
b
Remove the keyboard from the industrial terminal and locate
the switch assembly on the front of the terminal.
cConnect terminal to processor using a 1775CAT cable.
Front Panel CH0
or
1775-S4A
Module CH 5
PLC-3 Processor
25-pin Male
Connector with
Right-Angle Hood
Cat. No. 1775-CA T PLC-3
Industrial T erminal Cable (15ft.)
Industrial Terminal System
(Cat. No. 1770-T4)
Channel B

5–2 Configure a Personal Computer
Publication 177510.1 - March 1996
Connect to Personal Computer
320.04 cm
(126")
1
23 3
1
24
2
14
18
25
1
21
43
62
42
22
13
1
25
14
1784CP3 Interconnect Cable
Any AllenBradley or IBM and IBMcompatible machine can be used
as a programming device using 6200 or Application Interface (AI)
programming software.
Before you install the 6200 PLC3 programming software, you need
the following:
- 640 KBytes of RAM as base memory (expanded or extended
memory not required)
- 10 MBytes of disk space for storing files.
- AllenBradley DOS version 3.2xif you use a 1784T50 or
1784T45 programming terminal. If you use a 1784T47
programming terminal use DOS 4.01. If you use an IBM PC/XT,
IBM PCAT, or IBMcompatible programming terminal, use DOS
3.2, 3.3, 4.x, or 5.0.
- monochrome or color graphics monitor
- installed 1785KL, KTP, KT, KT2, KTK1 card
If your 1784T50 has DOS version 2.11 or earlier, you must upgrade
to the current version of AllenBradley DOS. The current version of
AllenBradley DOS is version 3.21.
For specific information about using 6200
programming software, see the PLC3
Programming Software Configuration Manual,
publication 62006.4.16.
For more
information...
Using 6200 Programming Software
Using AI Programming Software
Before you install the AI PLC3 programming software, you need
the following:
- IPM PC XT, AT or compatible computer with DOS 2.1 or later
- monitor and graphics board. These display types are supported:
monochrome display system
CGA display system
EGA display system
VGA display system
- 640K RAM of system memory
- a floppy drive and a hard drive
For specific information about using AI
programming software, see the PLC3
Ladder Logistics Manual, publication
9399L3man06.01.89.
For more
information...

Appendix
Publication 177510.1 - March 1996
Troubleshooting and
Specifications
If you don’t see the power-supply module indicators lit as specified
on page 3-2, use the following table to troubleshoot the problem.
Indicator: Normal Operation: If Not Lit:
AC ON red no ac power is being supplied to the unit
AC OK green an insufficient amount of ac power is being
supplied to the unit
DC OK green the supply's internal dc voltages are not in their
proper operating range
If the AC ON indicator is lit and either the AC OK or DC OK
indicators are not lit, you must shut down ac power (or toggle the
remote on/off for the PLC-3/10 chassis or lift and return the module
interlock bar on the PLC-3 chassis) to reset the supply. If this does
not clear the situation, you must troubleshoot the chassis using the
PLC-3 Family Controllers Installation and Operation Manual,
publication number 1775-6.7.1.
Specifications for PLC-3 processors follow.
PLC3 System
I/O Capacity
G4096 inputs and 4096 outputs maximum
Memory Capacity
G1.92M words maximum
G16 bits per word
Data Table Size
GExpandable (limited only by available
memory)
Scan Time (nominal)
G1 ms per 1K words of relaytype
instructions
G2.5ms per 1K words (typical)
1775P1 Power Supply
Input Voltage
G120V AC: 97 to 132V AC
G220/240V AC: 194 to 264 V AC
Memory Type
GError Detecting and Correcting (EDC)
Alternate Language Modules
G1775S4B scanner module
G1775GA module
Environmental Conditions
GOperational Temperature:
0 to 60°C (32 to 140°F)
GStorage Temperature:
40 to 85°C (40 to 185°F)
GRelative Humidity: 5 to 95%
(without condensation)
Powersupply Module
Indicators
Specifications

A–2 Troubleshooting and Specifications
Publication 177510.1 - March 1996
Specifications for PLC-3/10 processors follow.
PLC3/10 System
Dimensions
G19 by 20 by 14.5¨ (483by508 by 368 mm)
mainframe and power supply
Mounting
GPanel or 19 inch rack mount
I/O Capacity (per system)
G2048 inputs and outputs (total, any mix)
G2048 inputs and 2048 outputs (total,
complementary)
G2 scanners (max)
Scan Time (nominal)
G1 ms per 1K words of relaytype
instructions
G2.5ms per 1K words (typical)
Memory
G16, 32, 64 or 128K of Error Detecting and
Correcting (EDC) (128K maximum)
G16 bits per word
Data Table Size
GExpandable (limited only by available
memory)
Environmental Conditions
GOperational Temperature: 32 to 140°F (0
to 60°C)
GStorage Temperature: 40 to 185°F (40
to 85°C)
GRelative Humidity: 5 to 95% (without
condensation)
1775P3 Power Supply
Input Voltage
G115V AC
G230V AC
Input Voltage Range
G115V AC: 97 to 132V AC
G230V AC: 194 to 264V AC
Input Current
G115V AC: 3.0A @ 97V AC
G230V AC: 1.5A @ 194V AC
Frequency Range
G47 to 63Hz
Output Voltage @ Rated Current
G+5V DC: 28A "16V DC: 1A (total)
Overcurrent Shutdown Limit
G125% of rated current
Input Power
G210W(nom)
Fuses
G(2) 5A, 250 Volt, Slow Blow
Power Interlock Relay Contacts Rating
G1A maximum, 250V maximum
Terminal Strip Wire Size
G14AWG (max.)
External Transformer Rating (if used)
G1000VA maximum (1 kVA)

I–2
Publication 177510.1 - March 1996
Publication 177510.1 - March 1996
Supercedes 17752.20 August 1988, 17755.1 March 1995, 17752.4 November 1985, 17752.26 July 1988
PN 95512460
Copyright 1996 AllenBradley Company , Inc. Printed in USA