1756-L73XT

Technical specifications

Manufacturer

Allen-Bradley

Manufacturer part no.

1756-L73XT

Type

ControlLogix controller

Application

PLC controller

Used with

ControlLogix 1756 chassis

User memory

8 MB

I/O memory

0.98 MB

Nonvolatile memory storage

1 GB Secure Digital (SD) card (1784-SD1), ships pre-installed in the controller

Digital I/O, max

128,000

Analog I/O, max

4000

Total I/O, max

128,000

Energy storage modules

1756-ESMCAPXT capacitor energy storage module (removable, ships installed with every controller) 1756-ESMNSEXT capacitor energy storage module (removable, no residual WallClockTime power backup) 1756-ESMNRMXT capacitor energy storage module (non-removable, prevents USB connection and SD card use to help secure the controller)

Current draw @ 5.1V DC

800 mA

Current draw @ 1.2V DC

5 mA

Power dissipation

2.5 W

Thermal dissipation

8.5 BTU/hr

Isolation voltage

30V (continuous), basic insulation type, USB port to backplane, Compliant and tested according to IEC/UL 61010-1

USB port

USB 2.0, full speed (12 Mbps)

Weight, approx

0.25 kg (0.55 lb)

Slot width

1

Module location

Chassis-based, any slot

Chassis

For extended temperature applications, use 1756-A7XT and 1756-A10XT, Series C, For extended temperature and corrosive atmosphere applications, use 1756-A7ZXT and 1756-A10ZXT, For low temperature and corrosive atmosphere applications only, use 1756-A4K, 1756-A7K, 1756-A10K, 1756-A13K, 1756-A17K

Power supply, standard

1756-PAXT, 1756-PA30XT, 1756-PBXT, 1756-PB30XT

Power supply, redundant

1756-PAXTR, 1756-PBXTR

Wire category

3 - on USB ports

Temperature code

T4

Enclosure type rating

None (open-style)

Technical documents (1)

• Rockwell Automation technical data 1756-TD001

Key features

• 8 MB user memory and 0.98 MB I/O memory
• 1 GB SD card ships pre-installed in the controller
• Up to 128,000 total I/O, 4000 analog I/O
• Removable 1756-ESMCAPXT energy storage module ships installed
• USB 2.0 full speed port at 12 Mbps

About the Allen-Bradley 1756-L73XT

The Allen-Bradley 1756-L73XT is the ControlLogix 8MB Controller L7XT, listed by Rockwell Automation with the lifecycle status Active Mature. Rockwell's technical data 1756-TD001 gives 8 MB of user memory, 0.98 MB of I/O memory and a maximum of 128,000 total I/O, of which up to 4000 are analog. Nonvolatile storage is a 1 GB Secure Digital card (1784-SD1) that ships pre-installed in the controller. The module is chassis-based, fits any slot, is 1 slot wide and weighs approximately 0.25 kg (0.55 lb).

What is the 1756-L73XT used for?

The 1756-L73XT is a controller that installs in a ControlLogix chassis and is fitted with one of the listed energy storage modules. Rockwell specifies 1756-A7XT and 1756-A10XT Series C chassis for extended temperature applications, and other listed chassis for corrosive atmosphere or low temperature use. It is an open-style device with no enclosure type rating and a temperature code of T4.

Lifecycle and successor

Active.

Before you order

What to photograph or confirm so the right unit is quoted.

Check that the catalog number on the module label reads 1756-L73XT, and note the series letter and firmware revision shown on the same label. If you are unsure, send us a photo of the label and we will check it against this listing.