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20-750-S

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Allen-Bradley 20-750-S is the active standard Safe Torque Off option module for supported PowerFlex 750-Series drives.
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Technical specifications for 20-750-S

  • Manufacturer:
    Allen-Bradley
  • Part Number:
    20-750-S
  • Product Family:
    PowerFlex
  • Product Type:
    Safe Torque Off Option Module
  • Stock:
    1
  • Safety option:
    Standard Safe Torque Off (STO)
  • Drive family:
    Supported PowerFlex 750-Series drives; verify exact model in 750-UM002
  • Module variant:
    20-750-S; XT, S1 and S3 are separate catalog items
  • OEM manual:
    Rockwell publication 750-UM002
  • Power dissipation:
    4.4 W (Rockwell 750-TD001)
  • Installation reference:
    Current 750-UM002 and approved site safety design
  • Compatibility check:
    Drive catalog number, frame and option revision
  • Safety validation:
    Qualified system-level review required
  • Weight:
    2.27 kg
  • Estimated shipping dimensions:
    15×12×8cm
  • Tariff Code:
    8538900000
  • 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 Option Identity Drive Matching Safety Review Product Applications

Features:

  • Standard Safe Torque Off option module identified by catalog code 20-750-S.
  • Documented for several PowerFlex 750-Series drive families in Rockwell manual 750-UM002.
  • Distinct from the XT, Safe Speed Monitor and networked STO option codes.
20-750-S is the standard Safe Torque Off option in the PowerFlex 750 family. Its value in a maintenance plan is the exact option identity, not an assumption that every safety option or drive revision is interchangeable.

Rockwell manual 750-UM002 lists supported PowerFlex 753, 755 and selected 755T drive products. Confirm the actual drive model and revision against the current manual before selecting a spare.

Rockwell currently lists 20-750-S as Active. Any safety-function change requires the site safety assessment, the drive-specific instructions and validation by qualified personnel; this product page is not an installation procedure.

20-750-S | Manufacturer: Allen-Bradley | Product Type: PowerFlex 750 Safe Torque Off Option Module. Apter Power supports exact-model documentation review, quotation and sourcing.
Allen-Bradley 20-750-S Safe Torque Off Option Module Manuals,Datasheets,Link 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.
  • 20-750-S is the standard Safe Torque Off option in Rockwell publication 750-UM002.
  • 20-750-S-XT is a separately listed corrosive-gas-protection variant.
  • 20-750-S1 names Safe Speed Monitor; 20-750-S3 names a networked STO option, so the suffix is material.
  • Keep a photo of the existing option label and drive nameplate with the spare request.
  • Rockwell 750-UM002 lists the applicable PowerFlex 753 and 755 drive families.
  • The manual also lists selected 755TL, 755TR, 755TM and 755TS products.
  • The drive catalog number, frame and current documentation must be checked together for a replacement plan.
  • Do not infer suitability for a drive from a shared PowerFlex 750 family label alone.
  • 20-750-S is part of a safety-related drive arrangement, not a complete safety system by itself.
  • Use the applicable Rockwell 750-UM002 revision for design, installation, configuration and validation.
  • Site safety documentation should identify the installed option and the drive it serves.
  • Any change to a safety function belongs with qualified personnel and the approved machine assessment.
  • 20-750-S is used where a supported PowerFlex 750 drive has the standard STO option.
  • Installed-machine service calls for matching the exact module code and drive record.
  • The standard option should be distinguished from XT, Safe Speed Monitor and networked STO variants in procurement.
  • Active OEM status allows current sourcing while site-specific safety compatibility still needs engineering review.
Description
20-750-S is Rockwell Automation’s standard Safe Torque Off option module for the PowerFlex 750 drive family. The current OEM manual identifies its use with specified PowerFlex 753, 755 and selected 755T drive products.

20-750-S is not the same catalog item as the XT, Safe Speed Monitor or networked STO variants. For an installed drive, the exact option label, drive model, frame and applicable Rockwell manual revision belong together in a replacement review.

20-750-S is listed Active by Rockwell Automation. Because the module participates in a safety function, the complete machine design, installation and validation must remain under qualified, site-approved engineering control; this listing does not certify an individual application.
Alternative Names
20 750 S 20750S 2O-75O-S 2O75OS
Technical notes
Rockwell publication 750-UM002 is the model-specific installation, configuration and troubleshooting manual for the 20-750-S standard STO option. It also distinguishes 20-750-S-XT. Do not treat this product summary as a wiring diagram, safety assessment or authorization to change drive jumpers; use the exact drive and manual revision with qualified personnel.
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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.
A spare box is marked 20-750-S3. Is it the same as our 20-750-S?
No. Rockwell lists 20-750-S3 as a networked STO option and 20-750-S as the standard STO option. Record the installed drive and original option label, then review the correct OEM manual before considering any redesign.
Can 20-750-S-XT be treated as an unmarked 20-750-S?
No. Rockwell lists the XT code separately for corrosive-gas protection. Quote the exact installed suffix and check the drive/environment requirements instead of merging the two catalog identities.
Which drive details are needed before ordering a 20-750-S replacement?
Capture the PowerFlex drive catalog number, frame, revision and current safety-option label. Rockwell 750-UM002 lists supported drive families, but the full installed configuration still needs review.
Is the PowerFlex 750 family name alone enough to approve 20-750-S for a machine?
No. Rockwell documentation spans several drive models and frames. A qualified safety designer must check the particular drive, option revision and approved machine safety assessment.
Which OEM document should the maintenance team use for 20-750-S?
Use the current PowerFlex 750-Series Safe Torque Off Option Module User Manual, publication 750-UM002, together with the applicable drive documentation. The product page is not an installation or validation procedure.
After replacing 20-750-S, can the drive be returned to production without further checks?
Do not infer that from the matching part number. The site safety procedure and current Rockwell manual govern the required commissioning and functional validation by qualified personnel.

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