1756-DMD30
1756-DMD30
1756-DMD30
1756-DMD30
1756-DMD30
1756-DMD30
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    For 1756-DMD30 quotation and manual availability, Apter Power can review the complete catalog number and required quantity.

1756-DMD30

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Allen-Bradley 1756-DMD30 is a ControlLogix drive module that links a Logix controller to Reliance Electric DPS equipment through SynchLink.
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Technical specifications for 1756-DMD30

  • Manufacturer:
    Allen-Bradley
  • Part Number:
    1756-DMD30
  • Product Family:
    ControlLogix
  • Product Type:
    ControlLogix Drive Module
  • Stock:
    1
  • Supported Drive Equipment:
    SD3000 S6, S6R, S12, and S12R
  • Control Functions:
    Position, velocity, and outer torque control
  • Drive Link:
    SynchLink fiber to PMI chassis
  • Communication Formats:
    Velocity, Position, User-Defined, Custom User-Defined
  • Chassis Use:
    Single ControlLogix chassis slot
  • Operating Temperature:
    0...60 degrees C
  • Storage Temperature:
    -40...85 degrees C
  • Relative Humidity:
    5...95% noncondensing
  • Estimated shipping dimensions:
    3.5x14x14.5cm
  • 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 Control Loops SynchLink Interface Communication Formats Product Applications

Features:

  • Outer position, velocity, and torque control
  • SynchLink fiber connection to a PMI chassis
  • Support for SD3000 S6, S6R, S12, and S12R equipment
Allen-Bradley 1756-DMD30 coordinates a Logix owner controller with Reliance Electric Distributed Power System drive equipment.

The module closes the outer motion loop while the connected power module and Power Module Interface execute the inner drive functions.

Its selected communication format defines the controller tags exchanged across the ControlLogix backplane and SynchLink drive path.
The Allen-Bradley 1756-DMD30 ControlLogix Drive Module is listed as Active / Available from OEM. For 1756-DMD30 quotation planning, Apter Power can review the full catalog number and available manufacturer documentation.

Allen-Bradley 1756-DMD30 ControlLogix Drive 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.

Drive Control Functions

  • Position control: The module can close the outer position loop using feedback from the connected drive system.
  • Velocity control: Controller commands and drive feedback support a closed outer speed loop.
  • Torque control: The module coordinates outer torque demand while inner power regulation remains in the DPS equipment.
  • Owner controller: A Logix controller supplies command data and receives drive status through module-defined tags.

Fiber-Optic Drive Path

  • Network role: SynchLink carries deterministic drive data between the ControlLogix module and PMI chassis.
  • Fiber orientation: Transmit and receive connections must be crossed correctly between adjacent devices.
  • PMI connection: Each drive-module application is associated with the appropriate Power Module Interface hardware.
  • Diagnostic sequence: Check PMI power, both fiber ends, link indicators, and topology settings when communication is lost.

Controller Tag Structures

  • Velocity format: Creates the data structure used for standard velocity-control applications.
  • Position format: Adds the command and feedback data required by position-control applications.
  • User-defined format: Allows an application-specific exchange structure within supported module limits.
  • Configuration impact: Changing the selected format changes the module-defined tags used by controller logic.

Product Applications

  • Distributed drive sections: Coordinates ControlLogix commands with supported SD3000 power and PMI hardware.
  • Positioning machinery: Supports an outer position loop when the required feedback and Position communication format are configured.
  • Speed-regulated processes: Exchanges velocity commands and drive status for coordinated web, line, or section control.
  • Torque-managed loads: Provides the supervisory torque demand while inner current regulation remains in the connected drive equipment.
Description
Created for the connection between Logix control and Reliance Electric drive hardware, the Allen-Bradley 1756-DMD30 ControlLogix Drive Module provides the controller-side interface for a Distributed Power System drive section.

Position, velocity, and torque applications use the DMD30 to close the outer control loop. Fast current regulation and power-stage activity remain inside the connected DPS equipment, allowing the Logix program to supervise motion without replacing the drive's inner control functions.

SynchLink forms the deterministic path from the module to the Power Module Interface chassis. Correct transmit and receive routing, PMI power, and the relationship between the PMI and its power module determine whether command and feedback data can circulate through the drive section.

The selected communication format creates the module-defined tag structure seen by the owner controller. Velocity and position formats expose different command and feedback data, while a supported user-defined format changes the exchange expected by the application logic.

The complete installation therefore consists of more than the catalog number: the SD3000 equipment type, PMI arrangement, fiber topology, control mode, Logix ownership, and communication format must describe the same drive application before outputs are enabled.
Alternative Names
1756DMD30 1756 DMD30 1756-DMD3O I756-DMD30 1756-DMDS0 Allen-Bradley 1756-DMD30 Allen Bradley 1756-DMD30 ControlLogix 1756-DMD30
Technical notes
Allen-Bradley 1756-DMD30 uses a selected communication format to create controller tags; changing that format changes the data structure exchanged with the drive.
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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.
What should be checked before replacing an Allen-Bradley 1756-DMD30?
Before replacing 1756-DMD30, record the complete catalog number, drive type, SynchLink topology, communication format, and the Logix project configuration used by the installed module.
Which project data must be preserved when moving to another 1756-DMD30?
The 1756-DMD30 replacement should receive the validated axis setup, loop assignments, scaling, communication format, and SynchLink configuration from the original Logix project.
Why can a 1756-DMD30 remain powered while its drive data is unavailable?
A powered 1756-DMD30 can still lose drive data when the SynchLink fiber path, node configuration, format selection, or connected Reliance Electric DPS equipment does not match the project.
How should a SynchLink fault be isolated on 1756-DMD30?
For 1756-DMD30, inspect transmit and receive routing, fiber condition, node order, loop timing, and project settings before treating the module itself as failed.
Can 1756-DMD30 be selected only by its ControlLogix slot position?
No. The 1756-DMD30 slot is only one part of the match; the drive interface, SynchLink arrangement, configured data format, and application project must also agree.
What installation evidence helps match an existing 1756-DMD30?
Clear 1756-DMD30 label images, chassis and slot details, connected fiber paths, adjacent modules, drive nameplate, and project screenshots provide the strongest replacement evidence.
What should be tested after installing 1756-DMD30?
After installing 1756-DMD30, verify module status, SynchLink communication, axis feedback, command scaling, loop response, and controlled machine operation before returning the drive to service.

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