Rockwell Automation CompactLogix series User manual

Installation Instructions
CompactLogix Controllers
Catalog Numbers 1768-L43, 1768-L43S, 1768-L45, 1768-L45S
Topic Page
Important User Information 2
About CompactLogix Controllers 6
Verify Compatibility 6
Required System Components 7
Clearance Requirements 7
Module Placement 8
Install the Controller 9
Panel Mount the Controller 10
Mount the Controller on a DIN Rail 10
Confirm the Installation 13
Connect to the Controller 14
Configure a Communication Driver 14
Insert or Remove a CompactFlash Card 18
Install Controller Firmware 18
Remove a 1768 or 1769 Module from the DIN Rail 21
Status Indicators 23
Safety Status Indicators (1768-L43S and 1768-L45S Controllers only) 25
Clear a Major Fault 26
Clear a Nonrecoverable Fault 27
Troubleshoot a Nonresponsive Module 27
Troubleshoot System Power 28
Specifications 32
Additional Resources 36

2CompactLogix Controllers
Publication 1768-IN004D-EN-P - December 2009
Important User Information
Solid state equipment has operational characteristics differing from those of electromechanical
equipment. Safety Guidelines for the Application, Installation and Maintenance of Solid State Controls
(publication SGI-1.1 available from your local Rockwell Automation sales office or online at
http://literature.rockwellautomation.com) describes some important differences between solid state
equipment and hard-wired electromechanical devices. Because of this difference, and also because of
the wide variety of uses for solid state equipment, all persons responsible for applying this equipment
must satisfy themselves that each intended application of this equipment is acceptable.
In no event will Rockwell Automation, Inc. be responsible or liable for indirect or consequential damages
resulting from the use or application of this equipment.
The examples and diagrams in this manual are included solely for illustrative purposes. Because of the
many variables and requirements associated with any particular installation, Rockwell Automation, Inc.
cannot assume responsibility or liability for actual use based on the examples and diagrams.
No patent liability is assumed by Rockwell Automation, Inc. with respect to use of information, circuits,
equipment, or software described in this manual.
Reproduction of the contents of this manual, in whole or in part, without written permission of Rockwell
Automation, Inc., is prohibited.
Throughout this manual, when necessary, we use notes to make you aware of safety considerations.
WARNING Identifies information about practices or circumstances that can cause an explosion in
a hazardous environment, which may lead to personal injury or death, property
damage, or economic loss.
IMPORTANT Identifies information that is critical for successful application and understanding of
the product.
ATTENTION Identifies information about practices or circumstances that can lead to personal
injury or death, property damage, or economic loss. Attentions help you identify a
hazard, avoid a hazard and recognize the consequences.
Labels may be on or inside the equipment, for example, drive or motor, to alert people
that dangerous voltage may be present.
Labels may be on or inside the equipment, for example, drive or motor, to alert people
that surfaces may reach dangerous temperatures.
SHOCK HAZARD
BURN HAZARD

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Publication 1768-IN004D-EN-P - December 2009
Environment and Enclosure
ATTENTION This equipment is intended for use in a Pollution Degree 2 industrial environment,
in overvoltage Category II applications (as defined in IEC publication 60664-1), at
altitudes up to 2000 m (6562 ft) without derating.
This equipment is considered Group 1, Class A industrial equipment according to
IEC/CISPR Publication 11. Without appropriate precautions, there may be
difficulties with electromagnetic compatibility in residential and other
environments due to conducted as well as radiated disturbances.
This equipment is supplied as open-type equipment. It must be mounted within
an enclosure that is suitably designed for those specific environmental
conditions that will be present and appropriately designed to prevent personal
injury resulting from accessibility to live parts. The enclosure must have suitable
flame-retardant properties to prevent or minimize the spread of flame, complying
with a flame spread rating of 5VA, V2, V1, V0 (or equivalent) if non-metallic. The
interior of the enclosure must be accessible only by the use of a tool. Subsequent
sections of this publication may contain additional information regarding specific
enclosure type ratings that are required to comply with certain product safety
certifications.
In addition to this publication, see:
•Industrial Automation Wiring and Grounding Guidelines, Rockwell
Automation publication 1770-4.1, for additional installation
requirements.
•NEMA Standards 250 and IEC 60529, as applicable, for explanations of
the degrees of protection provided by different types of enclosure.

4CompactLogix Controllers
Publication 1768-IN004D-EN-P - December 2009
European Hazardous Location Approval
Consider the following if you install a 1768-L43S or 1768-L45S
controller in a European Zone 2 location.
General Safety Information for 1768-L43S and 1768-L45S Controllers
European Zone 2 Certification (The following applies when the product bears the
EX marking.)
This equipment is intended for use in potentially explosive atmospheres as defined by
European Union Directive 94/9/EC and has been found to comply with the Essential Health
and Safety Requirements relating to the design and construction of Category 3 equipment
intended for use in Zone 2 potentially explosive atmospheres, given in Annex II to this
Directive.
Compliance with the Essential Health and Safety Requirements has been assured by
compliance with EN 60079-15 and EN 60079-0.
WARNING •This equipment must be installed in an enclosure providing at least IP54
protection when applied in Zone 2 environments.
•This equipment shall be used within its specified ratings defined by
Allen-Bradley.
•Provision shall be made to prevent the rated voltage from being
exceeded by transient disturbances of more than 40% when applied in
Zone 2 environments.
•This equipment is not resistant to sunlight or other sources of UV
radiation.
•Secure any external connections that mate to this equipment by using
screws, sliding latches, threaded connectors, or other means provided
with this product.
•Do not disconnect equipment unless power has been removed or the
area is known to be nonhazardous.
ATTENTION Personnel responsible for the application of safety-related programmable
electronic systems (PES) shall be aware of the safety requirements in the
application of the system and shall be trained in using the system.

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North American Hazardous Location Approval
Preventing Electrostatic Discharge
The following information applies when
operating this equipment in hazardous
locations.
Informations sur l’utilisation de cet
équipement en environnements dangereux.
Products marked "CL I, DIV 2, GP A,B, C, D" are suitable for
use in Class I Division 2 Groups A, B, C, D, Hazardous
Locations and nonhazardous locations only. Each product is
supplied with markings on the rating nameplate indicating
the hazardous location temperature code. When
combining products within a system, the most adverse
temperature code (lowest "T" number) may be used to help
determine the overall temperature code of the system.
Combinations of equipment in your system are subject to
investigation by the local Authority Having Jurisdiction at
the time of installation.
Les produits marqués "CL I, DIV 2, GP A, B, C, D" ne
conviennent qu'à une utilisation en environnements de
Classe I Division 2 Groupes A, B, C, D dangereux et non
dangereux. Chaque produit est livré avec des marquages sur
sa plaque d'identification qui indiquent le code de
température pour les environnements dangereux. Lorsque
plusieurs produits sont combinés dans un système,le code de
température le plus défavorable (code de température le plus
faible) peut être utilisé pour déterminer le code de
température global du système. Les combinaisons
d'équipements dans le système sont sujettes à inspection par
les autorités locales qualifiées au moment de l'installation.
WARNING EXPLOSION HAZARD -
• Do not disconnect equipment unless
power has been removed or the
area is known to be nonhazardous.
• Do not disconnect connections to
this equipment unless power has
been removed or the area is known
to be nonhazardous. Secure any
external connections that mate to
this equipment by using screws,
sliding latches, threaded
connectors, or other means
provided with this product.
• Substitution of components may
impair suitability for Class I,
Division 2.
• If this product contains batteries,
they must only be changed in an
area known to be nonhazardous.
AVERTISSEMENT RISQUE D’EXPLOSION –
• Couper le courant ou s'assurer
que l'environnement est classé
non dangereux avant de
débrancher l'équipement.
• Couper le courant ou s'assurer
que l'environnement est classé
non dangereux avant de
débrancher les connecteurs. Fixer
tous les connecteurs externes
reliés à cet équipement à l'aide
de vis, loquets coulissants,
connecteurs filetés ou autres
moyens fournis avec ce produit.
• La substitution de composants
peut rendre cet équipement
inadapté à une utilisation en
environnement de Classe I,
Division 2.
• S'assurer que l'environnement est
classé non dangereux avant de
changer les piles.
ATTENTION This equipment is sensitive to electrostatic discharge, which can cause internal
damage and affect normal operation. Follow these guidelines when you handle
this equipment:
•Touch a grounded object to discharge potential static.
•Wear an approved grounding wriststrap.
•Do not touch connectors or pins on component boards.
•Do not touch circuit components inside the equipment.
•Use a static-safe workstation, if available.
•Store the equipment in appropriate static-safe packaging when not in use.

6CompactLogix Controllers
Publication 1768-IN004D-EN-P - December 2009
About CompactLogix Controllers
CompactLogix 1768-L43 and 1768-L45 controllers are designed to
provide a Logix solution for medium-sized applications. Compact
GuardLogix controller catalog numbers end in ‘S’. These safety
controllers are wider than their standard counterparts.
Verify Compatibility
This table shows the compatible RSLogix 5000 software versions and
controller firmware revisions.
IMPORTANT Attempting to use controllers with incompatible software and firmware
revisions may result in:
•an inability to connect to the series B controller in RSLogix 5000
software.
•unsuccessful firmware upgrades in ControlFlash or AutoFlash
utilities.
Controllers RSLogix 5000 Software
Version or Later
Controller Firmware
Revision or Later
1768-L43 and 1768-L45,
Series B
16.03 16.23
1768-L43S and 1768-L45S,
Series B
18 18
1768-L43, 1768-L45 1768-L43S, 1768-L45S

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Required System Components
You need these parts when installing your controller:
•1768-L43, 1768-L43S, 1768-L45, or 1768-L45S CompactLogix
controller
•1768-PA3 or 1768-PB3 power supply
•1769-ECR end cap
•Mounting screws (M4 or #8 panhead) or one of these
EN 50 022 DIN rails:
–35 x 7.5 mm (1.38 x 0.30 in.)
–35 x 15 mm (1.38 x 0.59 in.)
•1756-CP3 serial cable (or make your own)
Clearance Requirements
Allow for the minimum clearance from enclosure walls, wireways,
and other equipment.
IMPORTANT These minimum clearances keep the modules cool enough in most situations.
See Specifications on page 32 for the acceptable temperature range.
31609-M
Power
OUT
L1
L2/N
90 mm
(3.54 in.)
105 mm (4.13 in.)
90 mm
(3.54 in.)
105 mm (4.13 in.)

8CompactLogix Controllers
Publication 1768-IN004D-EN-P - December 2009
Module Placement
Follow these requirements to determine proper placement of your
1768 controller, power supply, 1768 I/O modules, and 1769 I/O
modules:
•Place the 1768-L4xx controller so that it is the last module
(furthest away from the power supply) in the 1768 backplane.
•The 1768 CompactLogix power supply distributes power from
the right side of the supply and must be the leftmost module
in the system.
•Up to eight 1769 I/O modules can reside in the local bank.
•The local bank is powered by a 1768 power supply.
•Up to two remote banks of 1769 I/O modules may be
connected by using 1769-CRLxextension cables.
•Remote banks are powered by a standard 1769 power supply.
IMPORTANT CompactLogix System Distance Ratings
Because the 1768 CompactLogix power supply works with the controller to
power a 1768 system, the distance rating in a 1768 CompactLogix system differs
from that in a 1769 CompactLogix system.
In the 1768 system, the distance rating is the distance between 1769 I/O modules
and the controller. In the 1769 system, the distance rating is the distance
between 1769 I/O modules and the power supply.
1768 Backplane (local)
1768 Controller, Power
Supply, and I/O Modules Remote Bank
1769 Power Supply and
I/O Modules
1769 Backplane

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•Up to eight 1769 Compact I/O modules can reside on each
side of a 1769 power supply in a remote bank. Consult the
module’s specifications for its distance rating.
•The type of controller determines the maximum number of
1768 modules that can reside in the local bank and the
maximum number of 1769 I/O modules that can reside in one
local and up to two remote banks.
Install the Controller
Follow these steps to install your controller.
1. Mount the controller to a panel or on a DIN rail.
2. Confirm the installation.
3. Connect the controller.
4. Configure a serial or Ethernet driver.
5. Install a CompactFlash card (optional).
6. Download and install controller firmware.
IMPORTANT Never place a 1769 power supply in a local bank with a 1768
controller or a major fault will occur.
Controller Max Local 1768
Modules
Max 1769 I/O Modules
(local and remote)
1768-L43, 1768-L43S 2 16
1768-L45, 1768-L45S 4 30
IMPORTANT Do not use screws if using a DIN rail to mount the controller. You can
break the mounting tabs if you screw the controller to a panel while it
is on a DIN rail.

10 CompactLogix Controllers
Publication 1768-IN004D-EN-P - December 2009
Panel Mount the Controller
Follow these steps to mount your controller by using the panhead
screws.
1. Connect the CompactLogix modules together as shown in
Mount the Controller on a DIN Rail on page 10.
2. Use the controller as a template and mark pilot holes on your
panel.
3. Drill the pilot holes for M4 or #8 screws.
4. Use M4 or #8 screws to mount the controller to your panel
with 1.16 N•m (10 lb•in) of torque.
5. Ground the module on a ground bus with a dedicated earth
ground stake.
6. Connect the ground bus to a functional earth ground on the
panel or a DIN rail.
Mount the Controller on a DIN Rail
ATTENTION During mounting of all devices, be sure that all debris (such as metal
chips or wire strands) is kept from falling into the controller or I/O
modules. Debris that falls into the controller or modules could cause
damage while the controller is energized.
ATTENTION This product is grounded through the DIN rail to chassis ground. Use zinc
plated yellow-chromate steel DIN rail to assure proper grounding. The use of
other DIN rail materials (for example, aluminum and plastic) that can corrode,
oxidize, or are poor conductors, can result in improper or intermittent
grounding. Secure DIN rail to the mounting surface approximately every
200 mm (7.87 in.) and use end anchors appropriately.

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Mount 1768 Components
Follow these steps to mount the controller.
1. Mount the controller on the DIN rail.
2. Mount additional 1768 modules to the left of the controller.
3. Mount the 1768 power supply and other 1768 modules.
31595-M
a.
31596 -M
b.
31597-M
31598 -M
b.
c.
c.
a.
a.
31599-M

12 CompactLogix Controllers
Publication 1768-IN004D-EN-P - December 2009
Mount 1769 I/O Modules
Follow these steps to mount 1769 I/O modules to the right of the
controller.
1. Align the upper and lower tongue-and-groove slots and slide
the module back toward the DIN rail until the bus levers line
up.
2. Close the DIN rail latches.
3. Slide the bus lever to the left to lock the modules together.
ATTENTION When attaching I/O modules, it is very important that the bus
connectors are securely locked together for proper electrical
connection.

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4. Attach the end cap by using the tongue and groove slots (a)
and locking the bus lever (b).
Confirm the Installation
After you have installed the controller and applied power, check that
the PWR and I/O PWR status indicators are solid green.
If the indicators are in any other state, see Troubleshoot System
Power on page 28.
a.
b.
a.
Power
OUT
L1
L2/N

14 CompactLogix Controllers
Publication 1768-IN004D-EN-P - December 2009
Connect to the Controller
Connect the 1756-CP3 serial cable to the controller’s serial port and to
your workstation.
If you make your own cable, follow these guidelines.
•Wire the connectors as
shown.
•Limit the cable length
to 15.2 m (50 ft).
•Attach the shield to
both connectors.
Configure a Communication Driver
Before you update controller firmware or use the controller in your
network, you must configure a communication driver specific to your
network.
See Configure a Serial Driver on page 15 or Configure an EtherNet/IP
Driver on page 17.
WARNING If you connect or disconnect the serial cable with power applied to this module
or the serial device on the other end of the cable, an electrical arc can occur. This
could cause an explosion in hazardous location installations.
Be sure that power is removed or the area is nonhazardous before proceeding.
Workstation Controller
1 DCD
2 RDX
3 TXD
4 DTR
COMMON
6 DSR
7 RTS
8 CTS
9
1 DCD
2 RDX
3 TXD
4 DTR
COMMON
6 DSR
7 RTS
8 CTS
9

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Configure a Serial Driver
Use RSLinx software to configure the driver for serial communication.
1. From the Communications menu, choose Configure Drivers.
2. From the Available Driver Types pull-down menu, choose the
RS-232 DF1 devices driver.
3. Click Add New.
4. Type a name for the driver and click OK.

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5. From the Comm Port pull-down menu on the Configure
Devices dialog box, choose the serial port on the workstation
to which your cable is connected.
6. From the Device pull-down menu, choose
Logix5550/CompactLogix.
7. Click Auto-Configure.
a. Click OK if the Auto Configuration Successful dialog box
appears.
b. If the dialog box does not appear, go back to step 5 and
verify that you selected the correct comm port.
8. Click Close.

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Configure an EtherNet/IP Driver
For EtherNet/IP communication, you must use a 1768-ENBT or
1768-EWEB module. If your controller is a 1768-L4xS, you must use a
series B 1768-ENBT or 1768-EWEB module. You can install up to two
of these modules to the left of the controller in the 1768 backplane.
Before you can load controller firmware via the EtherNet/IP network,
you must set the EtherNet/IP module’s IP address. You can set the IP
address by using the BootP-DHCP Utility on the Tools menu in
RSLogix 5000 software.
For more information, refer to the EtherNet/IP Modules in Logix5000
Control Systems User Manual, publication ENET-UM001.
Set the Communication Path to the Controller
1. Open an RSLogix 5000 project for the controller.
2. From the Communications menu, choose Who Active.
3. Expand the communication driver to the level of the
controller.
4. Select the controller.
5. Complete the desired action.
To Click
Monitor the project in the controller Go Online
Transfer a copy of the project from the controller to RSLogix 5000 software Upload
Transfer the open project to the controller Download

18 CompactLogix Controllers
Publication 1768-IN004D-EN-P - December 2009
Insert or Remove a CompactFlash Card
Follow these steps to insert or remove a
CompactFlash card.
1. Press the memory-card door latch on the
controller front panel and pivot the door
down toward you.
2. Insert or remove the card from the slot.
3. Close the memory card door.
Install Controller Firmware
The controller ships without functioning firmware, so you must
obtain and install the firmware before you can use your controller.
Firmware revisions are available with RSLogix 5000 programming
software, or you can download them from the support website at:
http://support.rockwellautomation.com. Be prepared to enter the
serial number of your RSLogix 5000 software.
To install firmware, you can use any of the following.
WARNING When you insert or remove the CompactFlash card while power is on, an
electrical arc can occur. This could cause an explosion in hazardous location
installations.
Be sure that power is removed or the area is nonhazardous before proceeding.
IMPORTANT When installing or updating controller firmware, do not interrupt the update
process in any way. Interrupting the firmware update may result in an
inoperable controller.
Inoperable controllers must be returned to Rockwell Automation.
Method Page
ControlFlash, version 8 or later, software that ships with RSLogix 5000 software 19
AutoFlash software that runs within RSLogix 5000 software 20
A 1784-CF64 or 1784-CF128 CompactFlash card with valid firmware already loaded 21

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Updating your controller firmware via ControlFlash or AutoFlash
software requires either a serial or other network connection to the
controller.
Updating via an Ethernet connection is faster, but you must first
install a 1768-ENBT Ethernet module to connect to the controller via
the Ethernet network.
For information on installing, configuring, and operating a
1768-ENBT module, refer to the EtherNet/IP Modules in Logix5000
Control Systems User Manual, publication ENET-UM001.
Install Firmware via ControlFlash Software
1. Make sure the network is connected.
2. Start ControlFlash software.
3. When the Welcome dialog box appears, click Next.
4. Select the catalog number of the controller and click Next.
5. Expand the network until you see the controller.
6. Select the controller and click OK.
7. Select the desired revision level and click Next.
8. To start the update, click Finish and then Yes.
The OK status indicator flashes red to show that the update is
in progress. The status box indicates when the update is
complete and the OK status indicator is solid green.
9. Click OK.
10. Click Cancel and then Yes to close ControlFlash software.
TIP If the required network is not shown, first configure a driver for that
network in RSLinx software.

20 CompactLogix Controllers
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Install Firmware via AutoFlash Software
1. Make sure the network is connected.
2. Using RSLogix 5000 software, attempt a download to a
controller project.
AutoFlash software launches if the required firmware is not
loaded on the controller.
3. Select the catalog number of the controller and click Next.
4. Expand the network until you see the controller.
5. Select the controller and click OK.
6. Select the desired revision level and click Next.
7. To start the update, click Finish and then Yes.
The OK status indicator flashes red to show that the update is
in progress. The status box indicates when the update is
complete and the OK status indicator is solid green.
8. Click OK.
9. Click Cancel and then Yes to close AutoFlash software.
TIP If the required network is not shown, first configure a driver for that
network in RSLinx software.