VFD Repair Solution — Allen-Bradley 1336-BDB-SP4D | 1336 PLUS Series
The Allen-Bradley 1336-BDB-SP4D Gate Drive PCB Assembly (part number 74103-244-54) is a precision-engineered replacement board for the Rockwell Automation 1336 PLUS family of AC variable frequency drives. This board governs IGBT switching signals, making it the critical interface between the drive’s control logic and its power output stage. When this board fails, the drive loses the ability to modulate motor speed — resulting in unplanned downtime and production loss.
Konmask.com sources, inspects, and ships this assembly to maintenance engineers and OEM integrators who need a reliable, spec-accurate replacement without the lead times of new OEM orders.
Where This Product Is Used
The 1336-BDB-SP4D Gate Drive PCB is deployed across a wide range of industrial environments wherever the Allen-Bradley 1336 PLUS AC drive is installed:
- Automotive manufacturing — conveyor lines, robotic welding cells, and paint booth exhaust fans controlled by 1336 PLUS drives
- Water & wastewater treatment — pump and blower VFD panels in municipal lift stations and filtration plants
- Food & beverage processing — mixer drives, bottling line conveyors, and refrigeration compressor controls
- HVAC & building automation — large AHU fan drives and chiller pump VFDs in commercial facilities
- Oil & gas upstream/midstream — wellhead pump jacks and pipeline booster stations using legacy 1336 PLUS panels
- Pulp, paper & converting — winder and unwinder tension control drives
- Mining & minerals — crusher feed conveyors and ventilation fan drives
If your facility runs a 1336 PLUS drive and is experiencing fault codes F2, F5, F12, or F23 (gate drive faults, overcurrent, or IGBT desaturation), this PCB assembly is the primary suspect component.
Technical Specifications
- Manufacturer: Allen-Bradley / Rockwell Automation
- Part Number: 1336-BDB-SP4D
- Assembly Drawing: 74103-244-54
- Compatible Drive Series: 1336 PLUS, 1336 PLUS II (verify frame size before ordering)
- Function: Gate Drive PCB — IGBT firing signal generation and isolation
- Board Type: Printed Circuit Board Assembly (PCBA)
- Weight: 300 g (approx.)
- Condition: New / Surplus New / Tested Refurbished (specify at inquiry)
- Warranty: 12 months from date of shipment
Why Engineers Specify This Model
- Direct OEM replacement — matches original Rockwell Automation board layout, connector pinout, and firmware compatibility; no field modification required
- Eliminates drive replacement cost — a board-level repair at a fraction of the cost of a new 1336 PLUS drive unit
- Faster than factory lead time — Rockwell’s current lead times on legacy 1336 PLUS spares can exceed 16–26 weeks; Konmask ships from available stock
- Proven in high-cycle environments — gate drive boards in pump and fan applications cycle thousands of times per day; this assembly is rated for continuous industrial duty
- Reduces diagnostic risk — swapping a known-good gate drive board is the fastest way to isolate a power section fault vs. a control board fault
Complete System Bill of Materials
For a full 1336 PLUS drive repair or preventive maintenance kit, engineers typically source the following alongside the 1336-BDB-SP4D:
- 1336-BDB-SP4D — Gate Drive PCB Assembly (this item)
- 1336-MOD-L6E / L11E — Main Control Board
- 1336-BDB-SP6D — Power Interface Board (frame-dependent)
- 1336-BDB-SP2D — Precharge / Snubber Board
- IGBT Module (frame-specific) — consult drive nameplate for kW rating
- DC Bus Capacitor Bank — recommended replacement at 10-year service interval
- 24 VDC SMPS Board — internal power supply for control logic
- Cooling Fan Assembly — frame B/C/D replacement fans
Contact [email protected] to request a complete BOM quote for your drive frame size and horsepower rating.
Compliance & Industry Standards
- RoHS Compliant — meets EU Directive 2011/65/EU on restriction of hazardous substances
- CE Marked — original Rockwell Automation assembly carries CE declaration for EU machinery directive compliance
- UL Listed — drive system listed under UL 508C (Power Conversion Equipment)
- IEC 61800-5-1 — adjustable speed electrical power drive systems safety requirements
- ISO 9001:2015 — Konmask’s sourcing and inspection process operates under documented quality procedures
Quality Assurance & Sourcing
Every 1336-BDB-SP4D unit shipped by Konmask.com passes through a documented inspection process:
- Visual inspection — PCB surface, solder joints, component seating, and connector integrity checked under magnification
- Functional bench test — gate signal output verified on a drive test fixture prior to shipment (applies to refurbished units)
- ESD-safe packaging — shipped in anti-static bags with foam cushioning inside a double-wall carton
- Traceability — each unit is logged with a Konmask inspection record number; available on request for MRO documentation
- Authentic sourcing — Konmask does not sell counterfeit or remarked components; units are sourced from authorized distributors, OEM surplus, or certified repair facilities
How to Source This Part
- Confirm compatibility — verify your drive nameplate shows 1336 PLUS or 1336 PLUS II and note the frame size (B, C, D, or E)
- Check stock availability — add to cart or contact us for real-time stock confirmation and lead time
- Request a quote — for quantities ≥ 2 units or for project BOM pricing, email [email protected]
- Place your order — orders received before 14:00 CST ship same business day from our warehouse
- Installation support — our technical team can provide board swap guidance and fault code interpretation at no charge
Application-Specific FAQ
Q: My drive shows Fault F12 (Overcurrent). Is the gate drive board the cause?
A: F12 can originate from the gate drive PCB, the IGBT module, or the motor cable. The fastest diagnostic step is to swap the gate drive board first — it is the lowest-cost component and the most common failure point in 1336 PLUS drives with F12 faults.
Q: Will this board work in both 1336 PLUS and 1336 PLUS II drives?
A: The 1336-BDB-SP4D is primarily specified for the 1336 PLUS. Compatibility with 1336 PLUS II depends on the frame revision. Please provide your full drive catalog number (from the nameplate) when ordering so we can confirm fitment.
Q: Can I send my failed board for repair instead of buying a replacement?
A: Yes. Konmask offers board-level repair services. Contact us with your failed board’s part number and fault description for a repair quote and turnaround time.
Q: What is the lead time if the item is out of stock?
A: We maintain safety stock on high-demand 1336 PLUS boards. If your specific unit is temporarily out of stock, typical replenishment lead time is 5–10 business days. Emergency sourcing is available — contact us directly.
Q: Do you provide a test report with the shipment?
A: Yes, upon request. Functional test reports are available for refurbished units. New/surplus units ship with a Konmask inspection certificate.
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