Allen-Bradley 1336F-BRF75-AA-EN Migration-Ready VFD

Overview

Allen-Bradley 1336F-BRF75-AA-EN Migration-Ready VFD for Legacy Control Systems

The Allen-Bradley 1336F-BRF75-AA-EN is a 75HP, 460V AC variable frequency drive engineered for direct integration into existing 1336 PLUS II control architectures. As the 1336 PLUS II series reaches end-of-life across global manufacturing facilities, the 1336F-BRF75-AA-EN has become the preferred migration path for engineers managing legacy panel upgrades, motor control center (MCC) retrofits, and production line modernization projects. This unit supports EtherNet/IP communication, enabling seamless integration with ControlLogix and CompactLogix platforms without requiring full PLC reprogramming.

For facilities still operating on legacy DeviceNet or DH+ communication backbones, the 1336F-BRF75-AA-EN supports protocol bridging via 1203-series communication adapters, preserving existing network topology while delivering modern drive performance. Engineers migrating from older 1336 IMPACT or 1336 FORCE drives will find the terminal layout and parameter structure closely aligned, significantly reducing commissioning time and minimizing the risk of wiring errors during cutover.

This drive is stocked and available for immediate dispatch. Each unit undergoes pre-shipment functional testing covering output voltage balance, current regulation, fault code verification, and communication link integrity. A support terms confirmed by quotation is included, covering manufacturing defects and component failure under normal operating conditions.

Migration Compatibility Table

Retrofit Planning for Existing Automation Systems

A successful retrofit begins well before the physical swap. Engineers should start by auditing the existing control cabinet for available rail space, verifying that the 1336F-BRF75-AA-EN’s dimensional envelope matches the legacy drive’s mounting position. In most standard MCC configurations, the footprint is compatible, but cable management and conduit routing should be reviewed, particularly where 1492-IFM interface modules or 1492-CABLE pre-wired terminal assemblies are in use alongside the drive.

Power supply capacity is a critical checkpoint. Confirm that the existing 1606-XLP or 1606-XLS series power supply feeding the control circuit can sustain the 1336F’s 24VDC logic requirements alongside any co-located 1734 POINT I/O modules or 1756 ControlLogix I/O chassis. Overloaded power supplies are a common cause of intermittent faults during the first weeks of post-retrofit operation.

For facilities using 1336 PLUS II drives in coordinated multi-drive configurations — such as winder/unwinder tension control or conveyor synchronization — the migration must account for the master-follower parameter structure. The 1336F-BRF75-AA-EN supports analog follower input via its standard I/O terminal block, but engineers should verify that the existing 1336-GM6 or 1336-BRF series master drive’s analog output scaling matches the follower’s input range before commissioning.

Communication migration is often the most time-sensitive element. Facilities running RSLogix 5000 or Studio 5000 projects with existing 1336 PLUS II Add-On Profiles (AOPs) should download and install the current 1336F AOP from Rockwell’s product compatibility database before the maintenance window. This ensures the PLC program can establish a clean EtherNet/IP connection without requiring logic edits during the cutover. Where legacy HMI screens built on FactoryTalk View SE reference drive parameter tags by address, a tag remapping session should be scheduled as part of the commissioning plan.

For sites where a 1203-USB or 1203-SSS serial programming cable was used to configure the legacy drive, note that the 1336F-BRF75-AA-EN is configured via EtherNet/IP or the integral HIM (Human Interface Module). If a 20-HIM-A6 or 20-HIM-C6S peripheral HIM is already in use on adjacent PowerFlex 700 or PowerFlex 40 drives in the same cabinet, it can be temporarily connected to the 1336F for local parameter entry during commissioning, reducing the need for a laptop at the panel.

Downtime Control During System Migration

Minimizing unplanned downtime during a drive replacement requires a structured pre-cutover checklist. Before the maintenance window opens, the legacy 1336 PLUS II drive’s full parameter set should be exported using DriveExplorer software and saved to a secure backup location. This file serves as both a commissioning reference and a recovery baseline if the retrofit encounters unexpected compatibility issues.

Where production schedules permit only a narrow maintenance window, consider staging the 1336F-BRF75-AA-EN on a bench test rig prior to installation. Apply the backed-up parameter set, simulate the control signal inputs, and verify motor rotation direction and speed reference response before the unit enters the cabinet. This approach has consistently reduced on-site commissioning time from several hours to under 60 minutes in comparable retrofit projects.

During the physical swap, label all control wiring at the terminal block before disconnection. The 1336F-BRF75-AA-EN’s TB1 and TB2 terminal assignments are documented in publication 1336F-UM001, and cross-referencing this against the legacy wiring diagram before reconnection eliminates the most common source of post-installation faults. After reconnection, perform an insulation resistance check on the motor cable before energizing the drive to confirm no wiring damage occurred during the swap.

Once energized, run the drive in local control mode first, verifying speed reference, acceleration/deceleration ramps, and fault response before transferring control to the PLC. This staged commissioning approach protects the original program logic, maintains field control continuity, and ensures that any parameter discrepancies are identified and corrected before the system returns to automatic operation.

Retrofit Support FAQ

Q: Is the 1336F-BRF75-AA-EN a direct drop-in replacement for the 1336 PLUS II 75HP drive?
A: Yes, in the majority of installations. The power rating, input voltage, and panel-mount footprint are identical. Terminal wiring should be verified against publication 1336F-UM001 before reconnection, as minor terminal label differences exist between the two series. Communication adapter requirements depend on your existing network protocol.

Q: What pre-shipment testing is performed on each unit?
A: Every 1336F-BRF75-AA-EN is tested for output voltage balance across all three phases, current regulation accuracy, fault code response, and communication link integrity prior to dispatch. Test records are available upon request. Each unit ships with a support terms confirmed by quotation covering manufacturing defects and component failure under normal operating conditions.

Q: Can this drive be commissioned using our existing DriveExplorer software?
A: Yes. DriveExplorer supports the 1336F series and can be used to upload, edit, and download parameter files. For sites running Studio 5000 Logix Designer, the current 1336F AOP should be installed before attempting EtherNet/IP connection. Local parameter entry is also possible via a compatible HIM module.

Q: What is the lead time and do you maintain stock?
A: The 1336F-BRF75-AA-EN is maintained availability confirmed by RFQ for immediate dispatch. Standard lead time for in-stock units is 1–3 business days. For urgent retrofit projects or multi-unit requirements, contact our sales team directly to confirm availability and arrange priority shipment.

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Product Identification

Brand / Ecosystem

Allen-Bradley
Allen-Bradley

Model / Series

1336F-BRF75-AA-EN

Product Family

Variable Frequency Drives

Availability Status

Available on request after model and quantity confirmation

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B2B RFQ, replacement inquiry and project spare-part request

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Drive range

AC drives, VFDs and accessories

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Voltage, kW/HP and load type

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Motor control, energy saving and spares

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• Input/output voltage and kW/HP confirmation
• Energy-saving motor control inquiry
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