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ControlLogix ProgrammableAutomation Controllers
1756-L71, L72, L73, L74, L75
The latest addition to the ControlLogix family of
controllers
is designed for improved performance. The new controllers
provide the memory, speed and processing capabilities to
meet the demands of basic plant oor applications to high
performance process and motion applications.
As part of the Rockwell Automation Integrated Architecture
system, these new controllers use the same programming
software, network protocol and information capabilities
as ControlLogix L6 series controllers, providing a common
control engine with a common development environment
for all control disciplines.
Improved Performance
Depending on your application, you evaluate performanceusing
different criteria. ControlLogix 1756-L7 series controllersoffer
specific improvements for specific applications.
For process applications,the new ControlLogix
controllerssignificantly improve the amount of information that
canbe exchanged between the control and supervisory layers,and
offer a significant improvement in the performance ofredundant
control applications. The 1756-L7 series controllersalso offer
increased capacity, allowing more control strategies
to be executed in each task.
For motion applications,the 1756-L7 series controllersprovide
high-speed motion command and axis trajectoryplanner execution
making it the right solution for complex, highperformance motion
applications. The controllers have beenoptimized for control of
high performance motion drives onEtherNet/IP or SERCOS interface
and are capable of supportingas many as 100 axes.
For discrete applications,the new ControlLogix
controllerssignificantly improve controller scan times using a new
fasterdual core custom CPU. They offer improved communicationrates
for new Rockwell Automation Ethernet communicationmodules and
provide faster cross-loading for redundancysystems.
Memory Options
The new ControlLogix controllers use enhanced SDRAMmemory
technology and are available in the following fixedmemory sizes: 2
Mb (1756-L71), 4Mb (1756-L72), 8Mb (1756-L73),16Mb (1756-L74) and
32Mb (1756-L75).
The optional and removable Secure Digital non-volatile
memoryprovides faster reads and writes and better data integrity
thanthe previous CompactFlash technology and is now rated for usein
SIL 2 applications. A 1Gb Secure Digital (SD) card is includedwith
each 1756-L7 series controller.
Power and Diagnostic Capabilities
With the launch of these new controllers, we also introduce
theEnergy Storage Module (ESM) which ships with each controller.The
ESM eliminates the need for lithium batteries as well asthe
maintenance and environmental issues associated with thetransport
and disposal of lithium batteries.
The new controllers also feature an on-board display
providingenhanced controller diagnostics and run-time
information.
Environmental Specications and Certications
Temperature Operating: 060C, 33140F / Storage: -4085 C, -40185
F
Relative
Humidity 595% non-condensingVibration 2g at 10500Hz
Shock Operating: 30g / Non-operating: 50g
Certications UL, c-UL-us, CE, ULH, CSA, C-Tick, FM, ATEX, TV,
CULH.See the Product Certication link at www.ab.com for
Declarationsof Conformity, Certicates, and other certication
details.
Publicati on 1756-PP015C-EN-P June 2012 Copyright 2012 Rockwe ll
Automatio n, Inc. All Rights Reserve d. Printed in USA.
Supersedes Publication 1756-PP015A March 2010
