Allen-Bradley 1336-BDB-SP29A Replacement for 1336 PLUS

Product Overview

Allen-Bradley 1336-BDB-SP29A Replacement for 1336 PLUS: Smooth Transition & Legacy System Compatibility

The Allen-Bradley 1336-BDB-SP29A (part number 74101-169-53) is the main drive control board for the 1336 PLUS series AC variable frequency drives — one of Rockwell Automation’s most widely deployed drive platforms across manufacturing, water treatment, material handling, and process industries. As the 1336 PLUS series has reached end-of-life and spare parts become increasingly scarce, facilities engineers and maintenance teams face mounting pressure to source reliable replacement boards that restore drive functionality without triggering a full system overhaul.

At TOPNLMS, we stock tested and verified 1336-BDB-SP29A main drive boards ready for immediate dispatch. Each unit undergoes pre-shipment functional verification to ensure it meets original Rockwell Automation performance specifications, giving your procurement and maintenance teams confidence before the board ever reaches the plant floor.

Compatibility Comparison Table

Seamless Upgrade Solutions

A successful 1336 PLUS drive board replacement rarely involves a single component in isolation. During the retrofit or emergency repair process, maintenance engineers frequently encounter adjacent components that require simultaneous attention. When replacing the 1336-BDB-SP29A main board, it is common practice to inspect and, where necessary, replace the 1336-MOD-L2E communication adapter to ensure DeviceNet or DH+ connectivity is fully restored. If the drive’s internal power supply has been stressed by the same fault event, the 1336-PB power board should be evaluated alongside the main board swap.

For facilities running coordinated multi-drive systems on a common Remote I/O (RIO) network, the 1336-GM1 gate module and associated 1336-BRF brake resistor feedback board may also need verification after a main board failure. Engineers migrating from older 1336 FORCE or 1336 IMPACT drive platforms to the 1336 PLUS architecture will find that the terminal block wiring layout and control signal assignments are largely compatible, reducing re-engineering time significantly.

In control cabinet environments where the 1336 PLUS drive shares a panel with Allen-Bradley 1746 SLC 500 I/O modules or a 1747-L553 SLC 5/05 processor, the drive’s RIO adapter communicates directly with the SLC rack — meaning the board replacement can be completed without any PLC program modification, provided the drive node address and data table mapping remain unchanged. Similarly, installations using a 1756 ControlLogix system with a 1756-DHRIO bridge module for DH+ communication will experience a transparent swap with no ladder logic changes required.

Where the retrofit scope extends to the operator interface, the 1201-HA2 HIM (Human Interface Module) or a PanelView 550 terminal connected via DH485 will continue to function normally after the board replacement, as the drive’s communication stack is restored to factory state. For sites planning a phased migration toward a PowerFlex 700 or PowerFlex 755 platform, sourcing a verified 1336-BDB-SP29A replacement now extends the operational life of the existing 1336 PLUS installation, providing a controlled transition window without emergency downtime pressure.

Retrofit Guidance FAQ

Q: Do I need to rewire the drive after replacing the 1336-BDB-SP29A board?
A: No. The replacement board uses the identical connector layout and pinout as the original. All existing control wiring, power terminals, and signal cables connect directly without modification.

Q: Will my existing drive parameters be preserved?
A: Drive parameters are stored in the HIM module or an external parameter file (if backed up via DriveExplorer or 1336-MOD-L2E). After installing the replacement board, re-upload the parameter file to restore all tuning values, acceleration/deceleration ramps, and fault configurations.

Q: Is the communication protocol (DH+, RIO, DeviceNet) affected by the board swap?
A: No. The communication adapters (e.g., 1336-MOD-L2E for DeviceNet, or the built-in RIO port) are separate from the main drive board. Provided the adapters are intact, the network configuration and PLC program require no changes.

Q: What physical space or mounting changes are required?
A: None. The 1336-BDB-SP29A is a direct chassis-mount replacement. It fits the standard 1336 PLUS drive enclosure without any bracket modification, spacer addition, or panel cutout change.

Q: Can this board be used in a 1336 FORCE or 1336 IMPACT drive?
A: No. The 1336-BDB-SP29A is specific to the 1336 PLUS platform. For 1336 FORCE or 1336 IMPACT drives, different board part numbers apply. Contact us with your drive nameplate data for cross-reference assistance.

Q: How long does commissioning take after the board swap?
A: For a direct replacement with parameters pre-backed-up, commissioning typically takes 30–90 minutes on-site, including board installation, parameter upload, and a no-load test run before returning the drive to production.

Warranty Assurance

Every 1336-BDB-SP29A main drive board shipped by TOPNLMS is covered by a 12-month warranty from the date of delivery. Prior to dispatch, each board is subjected to a functional verification process that checks power rail integrity, gate signal output, and communication port continuity. Units that do not pass verification are not shipped.

In the event of a warranty claim, TOPNLMS provides a replacement unit or full refund within the warranty period. Our after-sales response target is 24 hours for initial fault assessment, with replacement dispatch typically within 3 business days of confirmed fault verification. We support warranty claims with photographic evidence review and, where applicable, remote diagnostic consultation to determine root cause before replacement.

For procurement teams requiring documentation, we can provide a test report, packing list, and commercial invoice with HS code declaration for customs clearance. Expedited shipping options (DHL, FedEx, UPS) are available for urgent replacement scenarios where minimizing drive downtime is the primary objective.

Stock is maintained in Xiamen, China, with typical dispatch within 1–3 business days of order confirmation. For large-quantity orders or standing purchase agreements, contact our sales team to discuss lead time, pricing, and consignment stocking arrangements.