AB 1756-L71S
AB 1756-L71S
AB 1756-L71S
AB 1756-L71S
AB 1756-L71S
AB 1756-L71S
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  • Lifecycle status

    Active Mature
    Rockwell Automation identifies 1756-L71S as fully supported while newer products or families may exist.

1756-L71S

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Allen-Bradley 1756-L71S is a 2 MB/1 MB GuardLogix 5570 controller that operates with a 1756-L7SP safety partner.
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Ships by Wednesday, October 28
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Technical specifications for 1756-L71S

  • Manufacturer:
    Allen-Bradley
  • Part Number:
    1756-L71S
  • Product Family:
    ControlLogix
  • Product Type:
    Logix 5571S Automation Controller 2M/1M
  • Stock:
    1
  • Standard/safety memory:
    2M/1M
  • Programming:
    1 USB
  • Storage:
    SD
  • Energy storage:
    1756-ESMCAP
  • Motion axes:
    100
  • Power dissipation:
    2.5 W
  • Listed firmware:
    GuardLogix 5570 v38.011
  • Controller type:
    GuardLogix 5571S Safety Controller
  • Standard / safety memory:
    2 MB standard memory / 1 MB safety memory
  • Nonvolatile media:
    Supports 1784-SD1 (1 GB) and 1784-SD2 (2 GB) Secure Digital cards
  • Operating temperature:
    0 to +60 °C
  • Storage temperature:
    -40 to +85 °C
  • Relative humidity:
    5–95%, non-condensing
  • Weight:
    0.25 kg
  • Tariff Code:
    8537101190
  • Country of origin:
    USA
  • Place of shipment:
    Xiamen, Fujian, China
By purchasing this item, you agree to the Terms & Conditions, ApterPower is not an authorized distributor for listed manufacturers or tradenames and therefore the manufacturer's warranty does not apply. All our products come with ApterPower's 1-year warranty.

More Information

Overview Manuals Safety Project Storage & Power Firmware & Motion Application
  • 2 MB user memory and 1 MB safety memory for the GuardLogix 5570 platform
  • Requires a 1756-L7SP safety partner in the immediately adjacent right-hand slot
  • Ships with 1784-SD1 storage and a 1756-ESMCAP energy-storage module

1756-L71S is the lower-memory GuardLogix 5570 safety controller for applications requiring 2 MB user memory and 1 MB safety memory.

The controller and 1756-L7SP operate as a matched safety pair; their major and minor firmware revisions must match.

Preserve the safety signature, validated project and SD-card image, then confirm partner placement and energy-storage-module status before replacement.

Availability, condition, price, and shipping time for 1756-L71S are confirmed during quotation.

Allen-Bradley 1756-L71S GuardLogix Controller Manuals and Product Links

Important Notice: Other accessories, manuals, cables, calibration data, software, etc. are not included with this equipment unless listed in the above stock item description. All prices are shown in USD.

  • xiUse a 1756-L7SP as the safety partner for 1756-L71S
  • Install the partner immediately to the right of the primary controller
  • Match the major and minor firmware revisions before safety operation
  • A 1784-SD1 SD card ships installed and should normally remain in the controller
  • The 1756-ESMCAP energy-storage module is the standard installed ESM
  • 1756-L71S does not use the replaceable battery arrangement of older L6x controllers
  • Verify the installed GuardLogix firmware against the approved safety project
  • Keep the 1756-L7SP firmware at the same major and minor revision as 1756-L71S
  • Review coordinated-motion requirements within the controller's published 100-axis capacity
  • SIL 3 and Performance Level e machine-safety systems using a matched 1756-L7SP
  • GuardLogix projects that fit within 2 MB user memory and 1 MB safety memory
  • Distributed CIP Safety architectures using supported ControlLogix communication modules
Description
1756-L71S is a GuardLogix 5570 safety controller with 2 MB user memory and 1 MB safety memory.

It requires a 1756-L7SP safety partner immediately to its right, with matching major and minor firmware revisions.

The controller uses SD nonvolatile storage and an energy-storage module rather than a battery; retain the validated safety project and signature during service.
Revisions

Revision Part #

Also known as

1756-L71S Ser B
1756-L71S/B, Series B, Rev B
Alternative Names
1756-L71S 1756 L71S 1756L71S Allen-Bradley 1756-L71S Rockwell Automation 1756-L71S Logix 5571S 1756-L71S
Technical notes
1756-L71S requires a 1756-L7SP immediately to its right with matching major and minor firmware; preserve the 2 MB/1 MB project, safety signature, SD image and 1756-ESMCAP status before replacement.
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FAQS

The following is a list of questions commonly asked by our customers. Please contact us if you have a question about our process that is not answered below.
Can Allen-Bradley 1756-L71S provide GuardLogix safety without a safety partner?
No. Use a 1756-L7SP safety partner in the immediately adjacent right-hand slot.
How should memory fit be checked for Allen-Bradley 1756-L71S?
Confirm that the complete project fits within 2 MB user memory and 1 MB safety memory, including the validated safety task and future changes.
Must the 1756-L7SP firmware match Allen-Bradley 1756-L71S?
Yes. Rockwell Automation requires matching major and minor firmware revisions for the primary controller and safety partner.
Is an SD card supplied with Allen-Bradley 1756-L71S?
A 1784-SD1 card ships installed. Keep it installed unless the approved service procedure requires removal, and verify the stored project before restoration.
Does Allen-Bradley 1756-L71S require a replacement battery?
No. This controller generation uses an energy-storage module; the standard installed module is 1756-ESMCAP.
Can a standard ControlLogix project be downloaded directly to Allen-Bradley 1756-L71S?
No safety function should be assumed. The GuardLogix project, safety signature, partner configuration and validation must be preserved and verified.
Why might Allen-Bradley 1756-L71S report a safety-partner fault after replacement?
Check partner catalog, right-hand slot placement, major and minor firmware match, chassis seating, safety project and stored configuration.