Allen-Bradley 1336F-BRF75-AA-EN Replacement for 1336 PLUS II

Product Overview

Allen-Bradley 1336F-BRF75-AA-EN Replacement for 1336 PLUS II: Seamless Transition to Modern Drive Performance

The Allen-Bradley 1336F-BRF75-AA-EN is a 75HP (55kW), 460V three-phase AC variable frequency drive from the 1336 PLUS II series, engineered by Rockwell Automation for demanding industrial environments. As legacy 1336 PLUS II drives approach end-of-life and spare parts become increasingly scarce, facilities managers and maintenance engineers face a critical decision: source a verified original replacement unit or plan a structured upgrade path to a modern drive platform. TOPNLMS supplies factory-tested, original 1336F-BRF75-AA-EN units with full EtherNet/IP communication capability, ready to restore your production line with minimal disruption.

The 1336F-BRF75-AA-EN is widely deployed in pump, fan, compressor, conveyor, and mixer applications across automotive, food and beverage, water treatment, and heavy manufacturing sectors. Its integrated EtherNet/IP adapter (the “-EN” suffix) enables direct integration with Allen-Bradley ControlLogix and CompactLogix controllers via standard Ethernet infrastructure, eliminating the need for separate communication modules in many retrofit scenarios. When this drive fails or reaches end-of-service, the impact on production throughput is immediate — making a verified, in-stock replacement unit the fastest path back to full operation.

Compatibility Comparison Table

Seamless Upgrade Solutions: Migration Planning for 1336 PLUS II Environments

Replacing or upgrading a 75HP drive in an active production environment requires more than swapping the drive chassis. A successful migration of the 1336F-BRF75-AA-EN involves a systematic review of the surrounding control architecture to ensure wiring, communication, and programming continuity.

Controller and Communication Infrastructure: The 1336F-BRF75-AA-EN communicates natively over EtherNet/IP, making it directly compatible with Allen-Bradley ControlLogix 1756-L series processors and CompactLogix 1769-L series controllers without additional communication bridges. If your existing system uses a 1336-GM1 or 1336-GM6 communication module for DH+ or Remote I/O, migrating to the EtherNet/IP variant simplifies the network topology and reduces the number of discrete components in the control cabinet. In many installations, the 1756-ENBT or 1756-EN2T EtherNet/IP bridge module already present in the ControlLogix chassis can handle the drive connection directly.

Power Supply and Cabinet Infrastructure: At 75HP, the 1336F-BRF75-AA-EN requires a properly rated input disconnect, line reactor, and branch circuit protection. During a planned replacement, it is advisable to inspect and if necessary replace the 1321-3R line reactor (or equivalent) upstream of the drive, as these components accumulate thermal stress over the same service life as the drive itself. The 24VDC control power supply feeding the drive’s logic board — often a 1606-XLP or equivalent Allen-Bradley power supply — should also be verified for output stability before commissioning the replacement unit.

I/O and Signal Wiring: The analog reference signal (typically 0–10V or 4–20mA from a 1756-OF series analog output module or a standalone signal conditioner) connects directly to the drive’s terminal block using the same wiring as the predecessor unit. Digital I/O signals for Run, Stop, Fault Reset, and speed reference selection are wired to the same terminal designations, allowing the existing control panel wiring to be reused without modification in most cases. If the installation includes a 1336-MOD-D2 encoder feedback module for closed-loop speed control, verify module compatibility before reuse.

Human-Machine Interface: The 1201-HA2 or 1201-HB2 HIM (Human Interface Module) used with the existing 1336 PLUS II installation is compatible with the replacement unit. If the HIM is damaged or missing, a replacement HIM should be sourced alongside the drive to enable local parameter programming and fault diagnostics during commissioning. Alternatively, DriveExplorer software connected via the EtherNet/IP port provides full parameter access without a physical HIM.

Parameter Migration: Before decommissioning the failed drive, extract the parameter file using DriveExplorer or DriveTools SP if the drive is still partially functional. This file can be uploaded directly to the replacement 1336F-BRF75-AA-EN, eliminating manual parameter re-entry and reducing commissioning time significantly. If the original parameter file is unavailable, TOPNLMS technical support can assist with baseline parameter configuration based on the application type and motor nameplate data.

Terminal Blocks and Wiring Accessories: For installations where the control cabinet wiring harness is being partially renewed during the drive replacement, Allen-Bradley 1492-series terminal blocks and 1492-CABLE series pre-wired cables are recommended for clean, labeled terminations that simplify future maintenance. Proper cable management and ferrite core installation on motor output cables reduce EMI-related nuisance faults in sensitive production environments.

Retrofit Guidance FAQ

Q1: Can the 1336F-BRF75-AA-EN directly replace an older 1336 PLUS (non-PLUS II) drive of the same horsepower rating?
A: In most cases, yes — the physical frame size and terminal block layout are compatible, and the power wiring can be reused. However, the parameter structure differs between 1336 PLUS and 1336 PLUS II, so parameters must be re-mapped rather than directly transferred. Communication modules from the original 1336 PLUS installation (DH+ or Remote I/O adapters) are not compatible with the 1336 PLUS II chassis and must be replaced or the network migrated to EtherNet/IP.

Q2: Is the EtherNet/IP communication on the 1336F-BRF75-AA-EN compatible with my existing ControlLogix or CompactLogix program without re-writing the logic?
A: If your existing program already uses EtherNet/IP messaging (MSG instructions or produced/consumed tags) to communicate with a 1336 PLUS II drive, the replacement unit will use the same EDS file and I/O connection parameters. Minor tag path updates may be required if the IP address changes. If migrating from a DH+ or Remote I/O network, the control program will require updates to replace explicit messaging or rack-slot I/O references with EtherNet/IP equivalents.

Q3: What physical space and mounting requirements should I verify before installing the replacement drive?
A: The 1336F-BRF75-AA-EN at 75HP uses a Frame D enclosure. Verify that the existing cabinet cutout dimensions, mounting hole pattern, and minimum clearance distances (top, bottom, and sides for airflow) match the replacement unit’s installation drawing. Ensure the cabinet’s thermal management — including existing cooling fans or heat exchangers — is adequate for the drive’s heat dissipation at full load. If the original drive was wall-mounted, confirm the wall or panel rating supports the unit weight.

Q4: How does TOPNLMS verify the unit before shipment, and what does the 12-month warranty cover?
A: Every 1336F-BRF75-AA-EN unit supplied by TOPNLMS undergoes pre-shipment functional testing including power-on verification, communication port check, and parameter integrity confirmation. The 12-month warranty covers manufacturing defects and functional failures under normal operating conditions from the date of shipment. Warranty support includes technical assistance for installation issues, replacement unit dispatch for confirmed defective units, and after-sales response within one business day. Units damaged by incorrect installation, overvoltage events, or environmental conditions outside the rated specification are evaluated on a case-by-case basis.

Warranty Assurance

TOPNLMS provides a 12-month warranty on all Allen-Bradley 1336F-BRF75-AA-EN units from the date of shipment. This warranty reflects our confidence in the quality and authenticity of every unit we supply. Prior to dispatch, each drive undergoes a structured pre-shipment inspection protocol: visual inspection for physical integrity, power-on functional test, EtherNet/IP communication port verification, and parameter default confirmation. Units that do not pass inspection are quarantined and not shipped.

In the event of a warranty claim, our after-sales team responds within one business day. For confirmed defective units, we offer priority replacement dispatch to minimize your production downtime. Our technical support team is available to assist with installation troubleshooting, parameter configuration, and compatibility verification throughout the warranty period and beyond.

We ship globally from Xiamen, China, with export documentation, commercial invoices, and packing lists provided for customs clearance. Expedited shipping options are available for urgent replacement requirements. Contact our sales team to confirm lead time, freight options, and pricing for your specific quantity and destination.