1756-L84ES

Technical specifications

Manufacturer

Allen-Bradley

Manufacturer part no.

1756-L84ES

Type

GuardLogix safety controller

Application

PLC controller

Used with

ControlLogix 1756 chassis

Controller tasks

31 standard tasks, 1 safety task 1000 programs/task, Ethernet port

Built-in communication ports

1 port USB, Embedded Ethernet port

USB port communication

USB 2.0, Full speed (12 Mbps), Programming, configuration, firmware update, and online edits only

Ethernet performance

10/100/1000 Mbps

I/O capacity (Class 0/1) - packets/second

128,000 without CIP Security 40,000 with integrity 20,000 with integrity and confidentiality

Standard memory

20 MB

Safety memory

6 MB

Digital I/O, max

128,000

Analog I/O, max

4000

Nonvolatile memory storage

4 GB Secure Digital Card (1784-SD4), ships pre-installed in the controller

Energy storage module

Embedded in controller, non-removable

Number of power cycles

80,000

Current draw @ 1.2V DC

5.0 mA

Current draw @ 5.1V DC

1.20 A

Power dissipation

6.2 W

Thermal dissipation

21.2 BTU/hr

Isolation voltage

50V (continuous), Basic Insulation type, Ethernet to backplane, USB to backplane, and USB to Ethernet, Compliant and tested according to IEC/UL 61010-1

Weight, approx

0.394 kg (.868 lb)

Slot width

1

Module location

Chassis-based, any slot

Chassis

1756-A4, 1756-A4K, 1756-A7, 1756-A7K, 1756-A10, 1756-A10K, 1756-A13, 1756-A13K, 1756-A17, 1756-A17K, Series B and Series C

Wire category

3 - on USB port 2 - on Ethernet ports

Wire size

Ethernet connections:, Ethernet cabling and installation according to IEC 61918 and IEC 61784-5-2

Temperature code

T4

Enclosure type rating

None (open-style)

Technical documents (1)

• Rockwell Automation technical data 1756-TD001

Key features

• 31 standard tasks and 1 safety task
• Embedded 1 Gb Ethernet port and USB 2.0 port
• 4 GB SD card (1784-SD4) pre-installed
• Chassis-based, one slot wide, any slot
• Operates at 0 to 60 °C in Series C chassis

About the Allen-Bradley 1756-L84ES

The Allen-Bradley 1756-L84ES is a GuardLogix 5580 Safety Controller, listed by Rockwell Automation with an Active lifecycle status. Rockwell describes it with 20 MB of standard memory, 6 MB of safety memory, a USB port, a 1 Gb embedded Ethernet port and a 4 character alpha/numeric display. Rockwell's technical data 1756-TD001 lists 31 standard tasks and 1 safety task, with support for 250 EtherNet/IP devices. Power dissipation is given as 6.2 W and weight as approximately 0.394 kg.

What is the 1756-L84ES used for?

It is a chassis-based safety controller that fits any slot of the listed 1756 chassis and takes one slot width. Per Rockwell, it runs standard and safety tasks and communicates over EtherNet/IP through its embedded Ethernet port. The USB port is for programming, configuration, firmware update and online edits only, and a 4 GB Secure Digital Card (1784-SD4) ships pre-installed for nonvolatile storage.

Lifecycle and successor

Active.

Before you order

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

Check the catalog number 1756-L84ES, the series letter and the firmware revision on the label. Send us a photo of the label so we can confirm the part before you order.