Allen-Bradley ControlLogix L7 User Manual

Rockwell Automation Publication 1756-UM001M-EN-P - February 2012 21
Install the 1756-L7x Controller Chapter 1
Parts Available for Use with the 1756-L7x Controller
In addition to parts included with the controller, you may choose to use these
parts specific to your application.
1756-L7x Controller
Installation
These sections explain how to install the 1756-L7x controller. To install the
1756-L7x controller, complete the tasks summarized in this table.
Insert the Controller into the
Chassis
When installing a ControlLogix controller, you can do the following:
• Place the controller in any slot.
• Use multiple controllers in the same chassis.
You can install or remove a ControlLogix controller while chassis power is on and
the system is operating.
If your application requires Then use this part
USB connection from a computer to the controller USB cable
(1)
Nonvolatile memory 1784-SD1 (1 GB) or 1784-SD2 (2 GB)
ESM without WallClockTime back-up power 1756-ESMNSE
This ESM does not have WallClockTime back-up power.
Use this ESM if your application requires that the installed ESM deplete its residual stored
energy to 40 μJoule or less before transporting it into or out of your application.
(2)
Additionally, you can use this ESM with a 1756-L73
(8 MB) or smaller memory-sized controller only.
ESM that secures the controller by preventing the USB connection and SD card use
(2)
This ESM provides your application an enhanced degree of security
1756-ESMNRM
(1) The USB port is intended for temporary local programming purposes only and not intended for permanent connection. The USB cable is not to exceed 3.0 m (9.84 ft) and must not contain hubs.
(2) For information about the hold-up time of the ESMs, see the section Hold-up Time (in days)
on page 74. and stored energy depletion rate on page 26.
 Task Page
Insert the Controller into the Chassis 21
Insert the Key 22
Remove the SD Card 24
Install the SD Card 24
Uninstall the ESM 25
Install the ESM 28
WARNING: When you insert or remove the module while backplane 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.
Repeated electrical arcing causes excessive wear to contacts on both the
controller and its mating connector on the chassis. Worn contacts may create
electrical resistance that can affect controller operation.

Allen-Bradley ControlLogix L7 Specifications

General

Brand	Allen-Bradley
Model	ControlLogix L7
Category	Controller
Language	English