1756-L73SXT

Technical specifications

Manufacturer

Allen-Bradley

Manufacturer part no.

1756-L73SXT

Type

GuardLogix safety controller

Application

PLC controller

Used with

ControlLogix 1756 chassis

User memory

8 MB

Safety memory

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

Current draw @ 1.2V DC

5 mA

Current draw @ 5.1V DC

800 mA

Power dissipation

2.5 W

Thermal dissipation

8.5 BTU/hr

Isolation voltage

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

Weight, approx

0.25 kg (0.55 lb)

Slot width

2 (need 2 modules; each uses a slot)

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

• 1 GB SD card (1784-SD1) ships pre-installed
• Digital I/O maximum of 128,000, analog I/O maximum of 4000
• Chassis-based module that can be fitted in any slot
• Removable 1756-ESMCAPXT energy storage module ships installed
• Draws 800 mA at 5.1V DC with 2.5 W power dissipation

About the Allen-Bradley 1756-L73SXT

The Allen-Bradley 1756-L73SXT is a Logix 5573SXT Automation Controller 8/4M, which Rockwell lists as Active Mature. Rockwell technical data 1756-TD001 gives 8 MB of user memory, 4 MB of safety memory and 0.98 MB of I/O memory. It lists a maximum of 128,000 digital I/O and 4000 analog I/O, with nonvolatile storage on a 1 GB Secure Digital card (1784-SD1) that ships pre-installed. Rockwell gives the approximate weight as 0.25 kg and the enclosure type rating as none (open-style).

What is the 1756-L73SXT used for?

The 1756-L73SXT is a chassis-based controller that can be placed in any slot and has a slot width of 2. For extended temperature applications Rockwell lists the 1756-A7XT and 1756-A10XT Series C chassis, with standard power supplies 1756-PAXT, 1756-PA30XT, 1756-PBXT and 1756-PB30XT. Redundant power supplies listed are the 1756-PAXTR and 1756-PBXTR.

Lifecycle and successor

Active.

Before you order

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

Check the catalog number 1756-L73SXT, the series letter and the firmware revision on the module label. Send us a photo of the label if you want us to confirm the part before ordering.