Allen-Bradley 1336-BDB-SP31D Gate Drive Board

Description

Key Technical Specifications

Product Introduction & Supply Chain Strategy

The Allen-Bradley 1336-BDB-SP31D is an essential main Gate Drive Printed Circuit Board assembly designed for 460 V AC, 100 HP (Frame D) 1336 series variable frequency drives. Positioned directly between the main control board and the power IGBT modules, it converts low-voltage logic firing signals into high-current gate pulses while providing crucial overcurrent and phase-fault feedback.

Securing this module as New Surplus is a critical supply chain safeguard for legacy plant infrastructure. Because the 1336 drive family is discontinued by Rockwell Automation, finding original OEM parts is increasingly difficult. Buying verified New Surplus avoids the severe risks associated with refurbished boards—such as aged gate-firing capacitors or stressed optocouplers—allowing plant operators to extend the operational life of existing 100 HP motor controls without incurring expensive control cabinet retrofits.

Installation & Configuration Guide

Stage 1: Pre-Installation (Prep & Safety)

High-Voltage DC Bus Discharge Safety Warning

Main DC bus capacitors retain dangerous high-voltage electrical charge after main power removal. Measure the DC bus voltage across the +DC and -DC terminals with a verified voltmeter to confirm it has dropped to 0 V DC before opening the drive enclosure or touching internal wiring.

1. Perform complete Lock-Out/Tag-Out (LOTO) procedures on the main 460 V AC incoming line breaker feeding the VFD chassis.
2. Put on a grounded ESD wrist strap connected to the metal drive chassis ground.
3. Take high-resolution photos of all wire harness positions, ribbon cables, DIP switches, and jumper configurations on the existing gate drive board.

Stage 2: Removal

1. Disconnect all internal multi-pin ribbon cables and power wire leads connected to the 1336-BDB-SP31D assembly.
2. Loosen and remove the board mounting screws securing the PCB assembly to the internal heat sink frame.
3. Gently pull the board straight forward to disengage any direct pin-header interconnects without twisting the board.

Stage 3: Installation (Clone & Seat)

1. Verify that all jumpers and DIP switch blocks on the new 1336-BDB-SP31D match the exact positions of the old board photographed in Stage 1.
2. Align the board onto the chassis standoff mounting posts.
3. Hand-start all mounting screws, then tighten securely in a cross-pattern to ensure proper grounding and mechanical stability.
4. Reconnect all ribbon cables and wiring harnesses, confirming each locking clip snaps securely into place.

Stage 4: Power-On & Testing

1. Re-verify that no loose hardware or stray wire strands remain inside the drive housing.
2. Re-apply 460 V AC input power to the drive enclosure.
3. Verify that the drive main control display initializes cleanly without displaying “Phase Short”, “Ground Fault”, or “Gate Drive Fault” trip codes.
4. Run the motor at low speed under light load to verify smooth output current balance across all three phases.

1336-BDB-SP31D

1336-BDB-SP31D

Firmware/Software Versions & Upgrade Notes

The 1336-BDB-SP31D operates strictly as a hardware power-stage interface board and does not contain user-flashable microprocessor firmware.

• Hardware Compatibility: Designed specifically for 460 V AC, 100 HP Frame D 1336-series drives (including 1336 PLUS, 1336 PLUS II, 1336 IMPACT, and 1336 FORCE). Ensure the horsepower and frame size match the target VFD rating plate exactly.
• Component Revisions: Check board-level revision letters (e.g., Rev A, Rev B). While functional interchangability is maintained across revision letters within Frame D, matching jumper configurations between board revisions is required prior to applying line voltage.

Frequently Asked Questions (FAQ)

Q: Is this 1336-BDB-SP31D board brand new or has it been pulled from a used motor drive?

A: This product is a Brand New Surplus unit. It is not used, not pulled from a decommissioned plant, and not refurbished. All modules undergo rigorous quality verification to ensure OEM-level reliability.

Q: Why is New Surplus preferred over a cheaper refurbished gate drive board?

A: Our pricing reflects the cost of securing genuine New Surplus inventory globally. It may be 20–30% higher than a refurbished gamble, but it is substantially less than OEM list prices, and it buys you 100% peace of mind. Refurbished gate drive boards often contain thermal stress micro-cracks or aged gate capacitors that fail under heavy motor acceleration loads, risking catastrophic IGBT explosion.

Q: Can I use this gate drive board in a 230 V AC or 575 V AC drive chassis?

A: No. The 1336- is calibrated specifically for 460 V AC input drives rated at 100 HP (Frame D). Installing a board with mismatched voltage or horsepower parameters will cause immediate voltage fault trips or physical component damage.

Q: Does installing this replacement board require reprogramming drive parameters?

A: No parameter reprogramming is necessary within the drive’s Human Interface Module (HIM). Because settings are stored in the main control board, swapping the gate drive board only requires physically matching board jumper locations to restore original operation.

Q: What warranty coverage comes with this replacement gate drive PCB?

A: We provide a full 1-year functional warranty from the date of purchase. If the board fails to operate properly under normal rated conditions within this window, we will provide an immediate advance replacement from our stocked inventory.