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1756-M08SE

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Allen-Bradley 1756-M08SE is an eight-axis ControlLogix SERCOS servo module for coordinating compatible motion axes in a ControlLogix chassis.
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Technical specifications for 1756-M08SE

  • Manufacturer:
    Allen-Bradley
  • Part Number:
    1756-M08SE
  • Product Family:
    ControlLogix
  • Product Type:
    ControlLogix 8-Axis SERCOS Servo Module
  • Stock:
    1
  • Motion interface:
    SERCOS
  • Axis capacity:
    8 axes
  • Full-load power dissipation:
    5 W
  • Firmware:
    38.001 listed on the official product page
  • Maximum drives:
    8
  • SERCOS data rate:
    4 Mbps or 8 Mbps
  • SERCOS cycle time:
    0.5 ms, 1 ms, or 2 ms
  • Backplane current at 5.1 V DC:
    760 mA
  • Backplane current at 24 V DC:
    2.5 mA
  • Operating temperature:
    0–60 °C
  • Storage temperature:
    −40–85 °C
  • Relative humidity:
    5–95%, noncondensing
  • Operating shock:
    30 g
  • Non-operating shock:
    50 g
  • Dimensions:
    3.46 × 14.52 × 13.18 cm
  • Tariff Code:
    8537101101
  • 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 Eight-Drive Ring Drive and Fiber Match Command Recovery Application
  • Series B SERCOS interface supporting position, velocity, and torque commands for up to eight drives
  • Supports documented 4 Mbps and 8 Mbps rings with update periods matched to the installed drive count
  • Uses one ControlLogix chassis slot with 5 W maximum power dissipation

1756-M08SE is an Allen-Bradley ControlLogix SERCOS interface module for motion systems containing no more than eight compatible drives.

A full eight-drive configuration can operate at 4 Mbps with a 2 ms update period or at 8 Mbps with a 1 ms or 2 ms update period; shorter periods reduce the supported drive count.

Before replacement, record the Series B identity, ring order, fiber type, data rate, update period, axis-to-drive associations, firmware, and accepted Logix project.

Availability, condition, price, and shipping time for 1756-M08SE are confirmed during quotation.

Allen-Bradley 1756-M08SE ControlLogix SERCOS Servo Module Manuals, Datasheets, 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.

  • Use a 2 ms update period when all eight drives operate on a 4 Mbps SERCOS ring
  • At 8 Mbps, an eight-drive ring supports documented 1 ms or 2 ms update periods
  • A 0.5 ms update period reduces the limit to two drives at 4 Mbps or four drives at 8 Mbps
  • Confirm the exact Kinetix 2000, Kinetix 6000, Kinetix 7000, or Ultra3000 SERCOS drive catalog before connection
  • Match the installed plastic or glass fiber cable and connectors to the approved SERCOS components
  • Record the complete drive order and verify optical continuity around the ring before commissioning
  • Restore each 1756-M08SE axis association and its documented position, velocity, or torque command mode
  • Confirm drive scaling, feedback direction, limits, homing, and fault actions from the accepted project
  • Commission one axis at a time before testing coordinated motion across the complete SERCOS ring
  • Kinetix 2000 or Kinetix 6000 multi-axis systems using no more than eight SERCOS drives
  • Kinetix 7000 high-power servo systems operating within the documented ring capacity
  • Ultra3000 SERCOS systems requiring position, velocity, or torque command coordination
Description
1756-M08SE is an Allen-Bradley ControlLogix SERCOS interface module for building multi-axis digital servo systems within a modular ControlLogix architecture.

It links the Logix motion planner with as many as eight compatible servo axes, carrying cyclic commands, drive status and motion feedback around the fiber-optic SERCOS ring.

Before installation or replacement, confirm the chassis assignment, configured axis sequence, SERCOS cycle settings, drive compatibility, fiber-ring continuity, controller project, and supported firmware revisions.
Revisions

Revision Part #

Also known as

1756-M08SE Ser B
1756-M08SE/B, Series B, Rev B
Alternative Names
1756-M08SE 1756 M08SE 1756M08SE Allen-Bradley 1756-M08SE Rockwell Automation 1756-M08SE ControlLogix 1756-M08SE
Technical notes
1756-M08SE Series B is an eight-axis ControlLogix SERCOS module; preserve the validated motion project, ring configuration, firmware, and compatible axis hardware during 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 1756-M08SE control an axis without a compatible SERCOS motion system?
No. 1756-M08SE is the SERCOS motion interface within a ControlLogix solution; the controller project, SERCOS network, drives, motors, and feedback arrangement must be compatible.
Can 1756-M08SE replace a non-SERCOS ControlLogix motion interface by itself?
No. 1756-M08SE requires a SERCOS-based architecture. Confirm the existing drive communication method, controller support, and complete axis design before changing interface technology.
What must be retained when replacing 1756-M08SE in an operating machine?
Retain the tested Logix project, SERCOS ring configuration, axis assignments, drive parameters, and compatible motion firmware records so the replacement is restored to the same engineered system.
Why can 1756-M08SE show module health while motion axes remain unavailable?
A healthy module does not prove a valid motion ring. Check the SERCOS network path, configured axes, controller project, drive readiness, and the enabled motion state.
Can an installed 1756-M08SE be exchanged across Series without reviewing the project?
No. Use the exact installed Series and review firmware compatibility, electronic keying, and the validated motion application before any exchange.
Does 1756-M08SE include the drives, motors, and feedback devices for eight axes?
No. 1756-M08SE is the ControlLogix SERCOS module. Drives, motors, cables, feedback hardware, and machine safety equipment are separate system items unless expressly supplied.
What is the first check when 1756-M08SE motion faults return after a controller restart?
Compare the restored controller project and SERCOS configuration with the accepted machine backup, then check ring integrity and each drive's ready condition before changing axis parameters.

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