Allen-Bradley 1336-BDB-SP5C Original Industrial Spare 1336 PLUS Compatible

Product Overview

Allen-Bradley 1336-BDB-SP5C Original Industrial Spare 1336 PLUS Compatible: Ensuring System Stability in Critical Drive Applications

The Allen-Bradley 1336-BDB-SP5C is an original drive control PC board engineered specifically for the 1336 PLUS series AC variable frequency drives. In industrial environments where unplanned downtime translates directly into production loss and safety risk, maintaining a verified spare of this board is a cornerstone of any responsible preventive maintenance program. Whether you are managing a continuous process line, a conveyor system, a pump station, or a multi-axis motion application, the 1336-BDB-SP5C delivers the signal processing, gate drive coordination, and fault diagnostics that keep your 1336 PLUS drive operating within specification.

This board governs the core control logic of the 1336 PLUS drive chassis — managing PWM output signals, monitoring DC bus voltage, coordinating analog and digital I/O feedback, and interfacing with the drive’s keypad and communication adapter slots. A failed or degraded control board is one of the most common root causes of nuisance trips, erratic speed regulation, and complete drive failure in aging 1336 PLUS installations. Stocking a tested 1336-BDB-SP5C eliminates the critical path delay that occurs when a board failure forces an emergency procurement cycle.

Critical Technical Specs

Preventive Maintenance Strategy

A drive control board failure rarely occurs in isolation. In most field cases, the root cause involves a cascade of electrical stress events — DC bus overvoltage, excessive ambient temperature, cooling fan degradation, or contamination ingress — that progressively degrade board components over months or years. A disciplined preventive maintenance strategy for any 1336 PLUS installation should therefore treat the 1336-BDB-SP5C replacement as part of a broader inspection and sparing program.

During scheduled drive cabinet inspections, technicians should simultaneously evaluate the 1336 PLUS power structure and its associated gate driver boards, as these components share the same thermal and electrical stress environment as the control board. The 1336-MOD-L2E or equivalent communication adapter module should be inspected for connector corrosion and firmware integrity, since communication faults are frequently misdiagnosed as control board failures. The 24 VDC control power supply feeding the drive’s logic circuits is another high-priority check — an under-voltage or ripple condition on the control supply is a leading cause of premature control board wear.

Technicians should also inspect the 1336 PLUS fan assembly and internal heatsink for dust accumulation and bearing wear. Inadequate cooling accelerates electrolytic capacitor aging on the control board. While performing this inspection, it is advisable to check the DC bus capacitor bank for bulging or leakage, as capacitor degradation produces voltage spikes that stress the control board’s gate drive circuitry. If the drive is connected to a 1336-GM1 or 1336-GM2 operator interface module, verify that the ribbon cable and connector are seated correctly, as intermittent connections here can generate false fault codes that implicate the control board.

For facilities running multiple 1336 PLUS drives in a common MCC or control cabinet, a consolidated sparing strategy is strongly recommended. In addition to the 1336-BDB-SP5C control board, consider maintaining on-site stock of the 1336 PLUS precharge resistor assembly, input line reactor, and output filter module, as these components protect the drive from upstream power quality issues that directly impact control board longevity. Where the drive interfaces with a PLC-5 or SLC 500 controller via a remote I/O or DH+ network, the 1771-ASB remote I/O adapter or 1747-SN scanner module should be included in the periodic inspection checklist, since network communication errors can trigger drive faults that are incorrectly attributed to the control board. Finally, inspect all terminal block wiring on the drive’s control terminal strip for loose connections, insulation cracking, and corrosion — poor terminations are a chronic source of intermittent faults in aging 1336 PLUS installations.

Strategic Replacement Solutions

The Allen-Bradley 1336 PLUS series has been in service in industrial facilities worldwide for decades, and many installations continue to operate reliably well beyond the product’s original design life. However, as Rockwell Automation has transitioned its AC drive portfolio toward the PowerFlex 400, PowerFlex 525, and PowerFlex 755 platforms, sourcing original spare parts for the 1336 PLUS through standard distribution channels has become increasingly difficult and expensive.

The 1336-BDB-SP5C represents a direct, like-for-like replacement for the original control board in affected 1336 PLUS drive frames. Unlike a full drive replacement — which requires new parameter programming, potential mechanical modifications to the control cabinet, and retraining of maintenance personnel — a control board swap preserves the existing drive chassis, wiring, and parameter set. This approach minimizes downtime to the duration of the board exchange itself, typically two to four hours for a prepared maintenance team, versus two to five days for a full drive changeout including commissioning.

For facilities managing a planned migration away from the 1336 PLUS platform, maintaining a stock of 1336-BDB-SP5C boards provides a cost-effective bridge strategy: drives can continue operating reliably while capital budget is allocated for a phased PowerFlex upgrade, rather than forcing an emergency replacement at premium cost during an unplanned outage. This approach also supports regulatory and safety compliance in facilities where drive parameter records and change management documentation are required before any major equipment substitution.

Support FAQ

Q1: Is the 1336-BDB-SP5C compatible with all 1336 PLUS drive frame sizes?
The 1336-BDB-SP5C is designed for specific frame configurations within the 1336 PLUS series. Before ordering, verify your drive’s catalog number and frame size from the nameplate. Contact us with your full drive catalog number and we will confirm compatibility prior to shipment.

Q2: What pre-shipment testing is performed on each unit?
Each 1336-BDB-SP5C undergoes functional verification testing before dispatch. Units are inspected for physical integrity, connector condition, and board-level electrical continuity. All units are shipped with a 12-month warranty covering defects in materials and workmanship from the date of shipment.

Q3: How quickly can the board be installed on-site, and is any firmware programming required?
For a like-for-like replacement within the same 1336 PLUS frame, the 1336-BDB-SP5C is a direct swap — no firmware flashing or parameter re-entry is required, as drive parameters are stored in the drive’s memory module or operator interface, not on the control board itself. A qualified drive technician can typically complete the exchange in under four hours.

Q4: What is your recommended inventory strategy for facilities with multiple 1336 PLUS drives?
For facilities operating three or more 1336 PLUS drives, we recommend maintaining a minimum of one 1336-BDB-SP5C control board per drive family as a critical spare. Given the extended lead times for legacy Allen-Bradley spare parts through standard channels, on-site stock eliminates the risk of extended production downtime during an unplanned board failure. Bulk procurement pricing is available — contact us for volume quotation.