AC Drive Control Solution – Allen-Bradley 1336T-MCB-SP1B | 1336 PLUS Series
The Allen-Bradley 1336T-MCB-SP1B (Part No. 74101-774-51) is the main control PC board for the Rockwell Automation 1336 PLUS family of AC variable-frequency drives. This board serves as the intelligence core of the drive, executing closed-loop speed regulation, fault diagnostics, and I/O communication. Sourced through verified industrial channels and inspected before dispatch, it is a direct drop-in replacement for failed or degraded control boards in existing 1336 PLUS installations.
Where This Product Is Used
- Automotive manufacturing lines — motor speed control on conveyor and transfer systems driven by 1336 PLUS VFDs
- Water & wastewater treatment plants — pump and blower drive control requiring continuous, fault-tolerant operation
- Food & beverage processing — hygienic conveyor and mixer drives where precise speed regulation is critical
- HVAC central plant rooms — chiller pump and AHU fan drives in building automation systems
- Oil & gas upstream/midstream — compressor and pump motor control in hazardous-area drive panels
- Pulp & paper mills — winder and refiner drives requiring high-torque, low-speed accuracy
- Mining & minerals processing — crusher and conveyor belt drives subject to heavy cyclic loads
- General machine tool OEMs — spindle and axis drives on legacy CNC and special-purpose machinery
Technical Specifications
- Part Number: 1336T-MCB-SP1B
- Catalog / Reference: 74101-774-51
- Compatible Drive Family: Allen-Bradley 1336 PLUS (1336T series)
- Board Function: Main Control PC Board — speed reference processing, PWM generation, fault management, I/O interface
- Communication Interface: Compatible with 1336 PLUS standard I/O and optional communication adapter slots
- Mounting: Direct board-level replacement; fits existing drive chassis without mechanical modification
- Weight: 480 g (bare board with connectors)
- Manufacturer: Rockwell Automation / Allen-Bradley
- Country of Origin: USA
- RoHS Status: Legacy industrial component; verify with your compliance team for specific project requirements
Why Engineers Specify This Model
- Exact OEM replacement — same firmware baseline and hardware revision as the original factory-installed board; no re-parameterization of the drive required in most cases
- Eliminates full drive replacement cost — board-level repair typically reduces downtime cost by 60–80% versus purchasing a new drive
- Preserves existing wiring and panel layout — no changes to conduit, terminal blocks, or PLC I/O mapping
- Proven field reliability — the 1336 PLUS platform has a multi-decade installed base; replacement boards are a well-understood maintenance procedure
- Faster commissioning — technicians familiar with 1336 PLUS can swap and verify the board in under two hours
Complete System Bill of Materials
For a full 1336 PLUS drive restoration or preventive maintenance kit, engineers typically source the following alongside the MCB-SP1B:
- 1336 PLUS Power Interface Board (PIB)
- 1336 PLUS Gate Driver Board
- 1336 PLUS Fan Assembly (frame-size dependent)
- 1336 PLUS Capacitor Bank / DC Bus Capacitors
- 1336-MOD-L2 or equivalent communication adapter (if network I/O is required)
- 1336-BRF series dynamic braking resistor (application-dependent)
- Allen-Bradley 1321 line reactor (input harmonic mitigation)
Contact support@konmask.com to request a complete BOM quote for your drive frame size and power rating.
Compliance & Industry Standards
- UL 508C — Power Conversion Equipment (original drive certification)
- CE Marking — Low Voltage Directive and EMC Directive compliance on original drive assembly
- IEC 61800-3 — Adjustable speed electrical power drive systems — EMC requirements
- ISO 9001 — Konmask.com quality management system for sourcing and inspection
- REACH / RoHS — Legacy component; consult project compliance documentation
Quality Assurance & Sourcing
- Every board undergoes visual inspection for component damage, corrosion, burnt traces, and connector integrity before listing
- Sourced exclusively from authorized industrial distributors, OEM surplus channels, and verified MRO suppliers — no grey-market or counterfeit supply chains
- Stored in ESD-safe packaging in a climate-controlled warehouse to prevent electrostatic and humidity damage
- Batch traceability maintained for all stock; lot documentation available on request
- 30-day return window for DOA (Dead on Arrival) units with photographic evidence
How to Source This Part
- Add to cart and complete checkout — stock is limited and allocated on a first-come basis
- Request a quote for volume orders (>3 units) or blanket purchase agreements via support@konmask.com
- Provide your drive nameplate data (catalog number, series letter, firmware version) if you need compatibility confirmation before ordering
- Expedited shipping available to mainland China, Hong Kong, Southeast Asia, and international destinations — contact us for DHL/FedEx rates
- Lead time: In-stock orders ship within 1–2 business days; out-of-stock sourcing typically 7–21 business days
Application-Specific FAQ
Q: Will this board work with all 1336 PLUS frame sizes?
A: The 1336T-MCB-SP1B is designed for the 1336 PLUS (1336T) series. Compatibility varies by drive series letter and firmware revision. Please provide your full drive catalog number for confirmation before ordering.
Q: Do I need to reload drive parameters after swapping the board?
A: In most cases, yes. Parameters are stored on the board. We recommend backing up your parameter file via DriveExplorer or DriveExecutive before the swap, then restoring after installation.
Q: Can this board be repaired rather than replaced?
A: Component-level repair is possible for some failure modes (e.g., failed op-amps, blown fuses, damaged capacitors). Contact us to discuss board repair services if cost is a primary concern.
Q: Is this a new or refurbished board?
A: Stock condition (new, tested-surplus, or refurbished) is indicated on the product listing. Contact us if you require a specific condition grade for your procurement policy.
Q: What warranty is provided?
A: Konmask.com provides a 90-day functional warranty against manufacturing defects and DOA failures. Warranty does not cover damage from incorrect installation or electrical overstress.
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Contact: support@konmask.com | +0086 19859288691
