Allen-Bradley 1336F-MCB-SP1F Control Board for 1336 PLUS II

Allen-Bradley 1336F-MCB-SP1F Control Board for 1336 PLUS II

The Allen-Bradley 1336F-MCB-SP1F is the main control board engineered specifically for the 1336 PLUS II series of AC variable frequency drives. Within a layered industrial automation architecture, this board occupies the critical execution layer — translating high-level command signals from the control layer into precise motor speed, torque, and direction outputs. Its role extends far beyond a simple replacement component: the 1336F-MCB-SP1F is a system-defining element that determines the drive’s ability to maintain synchronization with upstream controllers, downstream actuators, and peer devices across the full control hierarchy.

In modern industrial environments — spanning manufacturing assembly lines, power distribution substations, petrochemical processing plants, water treatment facilities, mining conveyors, metallurgical rolling mills, and high-throughput packaging systems — the integrity of the drive control board directly governs system uptime, process repeatability, and safety compliance. The 1336F-MCB-SP1F is designed to meet these demands with robust signal processing, stable communication interfaces, and reliable gate drive outputs that ensure consistent inverter switching across the full operating range of the 1336 PLUS II platform.

From a system architecture perspective, the 1336F-MCB-SP1F interfaces with multiple layers simultaneously. At the control layer, it receives reference signals from Allen-Bradley ControlLogix or CompactLogix PLCs via DeviceNet or Remote I/O (RIO) communication adapters such as the 1336-GM1 or 1336-BDN. At the I/O layer, it processes analog and digital feedback from field sensors, encoders, and process transmitters routed through the drive’s I/O terminal block. At the power layer, it coordinates with the drive’s power structure — including the precharge board, gate driver board, and DC bus capacitor bank — to ensure safe and controlled motor energization. This multi-layer coordination is what makes the 1336F-MCB-SP1F indispensable to system architects who demand deterministic, repeatable drive behavior.

Redundancy and fault tolerance are central concerns in critical process applications. The 1336F-MCB-SP1F supports the 1336 PLUS II’s built-in fault logging and diagnostic capabilities, enabling maintenance engineers to retrieve fault history, monitor real-time drive parameters, and execute controlled shutdowns without disrupting adjacent control loops. When integrated with a DriveTools SP or Connected Components Workbench programming environment, the board’s parameter set can be fully backed up and restored, dramatically reducing mean time to repair (MTTR) in the event of an unplanned outage. Spare board inventory management is simplified by the board’s broad compatibility across multiple 1336 PLUS II frame sizes, reducing the number of unique spare parts required in a plant-wide maintenance program.

Signal flow through the 1336F-MCB-SP1F follows a well-defined path: speed or torque reference signals enter via the communication adapter or analog input terminals, are processed by the board’s DSP core, and are translated into PWM gate signals delivered to the IGBT power modules. Simultaneously, the board monitors motor feedback signals — including current, voltage, and optional encoder inputs — to execute closed-loop vector control or V/Hz regulation depending on the configured control mode. This closed-loop architecture ensures that the drive responds accurately to load disturbances, maintaining process stability even under dynamic operating conditions.

For system integrators managing multi-drive installations, the 1336F-MCB-SP1F’s compatibility with the broader 1336 PLUS II ecosystem is a significant advantage. It operates seamlessly alongside companion components such as the 1336-PB-SP2 power board, 1336-GM1 Remote I/O communication adapter, 1336-MOD-L2 operator interface module, and 1336-BDN DeviceNet adapter. In cabinet-level designs, the drive can be paired with Allen-Bradley 1492 terminal blocks, 1606 power supplies, and 1783 managed Ethernet switches to create a fully integrated, standards-compliant motor control center (MCC) or variable speed drive (VSD) panel. This ecosystem compatibility reduces engineering risk, simplifies commissioning, and ensures long-term supportability across the installed base.

Long-term maintenance efficiency is further enhanced by the availability of this board through specialist industrial component suppliers. Procurement teams can source the 1336F-MCB-SP1F with confidence, backed by a 12-Month Warranty that covers manufacturing defects and ensures operational reliability from the moment of installation. This warranty commitment, combined with rigorous pre-shipment functional testing, means that replacement boards arrive ready for immediate installation — minimizing drive downtime and protecting production schedules.

Product Specification Table

System Compatibility Notes

The 1336F-MCB-SP1F achieves its full potential when deployed within a coordinated, multi-component control architecture. At the controller level, an Allen-Bradley ControlLogix L7x or CompactLogix L3x PLC serves as the system master, issuing speed references and receiving drive status feedback via a 1336-BDN DeviceNet adapter or a 1336-GM1 Remote I/O scanner. The main control board processes these references in real time, executing the configured control algorithm and generating the appropriate PWM output to the drive’s IGBT power modules.

At the human-machine interface layer, a PanelView Plus 7 or PanelView 800 terminal connected via EtherNet/IP to the ControlLogix system provides operators with real-time visibility into drive speed, current, fault status, and process variables. Parameter changes and drive resets can be executed from the HMI without requiring direct access to the drive cabinet, improving both operational efficiency and safety compliance in hazardous environments.

The power layer supporting the 1336F-MCB-SP1F includes the 1336 PLUS II’s internal power supply board (1336-PB-SP2), which provides regulated DC voltages to the control board and communication adapters. In installations requiring enhanced power quality, an Allen-Bradley 1321 line reactor or 1321-3R isolation transformer is typically installed upstream of the drive to reduce harmonic distortion and protect the control board from line transients. A 1606-XLP power supply may also be used to power auxiliary control circuits within the same panel.

For I/O expansion and signal conditioning, Allen-Bradley 1492-IFM interface modules and 1492 terminal blocks provide clean, organized termination of field wiring — including analog speed references, digital run/stop commands, and fault relay outputs — to the drive’s I/O terminal strip. In multi-drive systems, a 1783-MS10T managed Ethernet switch facilitates network segmentation and traffic prioritization, ensuring that drive command and feedback data is delivered with minimal latency across the plant network.

Industrial Application Notes

The 1336F-MCB-SP1F finds application across a wide spectrum of process and discrete manufacturing industries. In manufacturing and assembly environments, it controls conveyor drives, spindle motors, and material handling systems where precise speed regulation and rapid response to load changes are essential for maintaining production throughput and product quality. The board’s closed-loop vector control capability ensures that motor speed remains stable even as conveyor loads vary throughout the production cycle.

In power generation and distribution facilities, the 1336 PLUS II drives equipped with this control board regulate cooling water pumps, forced draft fans, and auxiliary motor loads. The board’s robust fault diagnostics and parameter logging capabilities support the stringent maintenance documentation requirements of power plant operations, while its compatibility with Remote I/O communication allows seamless integration into legacy DCS architectures.

In petrochemical and oil & gas processing plants, the 1336F-MCB-SP1F supports pump and compressor drive applications where process continuity is critical. Its ability to execute controlled ramp-down sequences on power loss — when combined with appropriate UPS or ride-through hardware — protects both the driven equipment and the process from the consequences of unplanned drive trips. The board’s DeviceNet communication capability enables integration with safety PLCs for emergency shutdown (ESD) coordination.

In water and wastewater treatment facilities, variable speed pump drives controlled by the 1336F-MCB-SP1F deliver significant operational stability by matching pump output to actual process demand. The board’s analog input processing supports pressure and flow transmitter feedback for closed-loop PID control, eliminating the need for external process controllers in simple single-loop applications. In mining and minerals processing, the board’s rugged design supports operation in high-vibration, high-dust environments typical of crusher, mill, and conveyor drive applications.

Product Compatibility FAQ

Q1: Is the 1336F-MCB-SP1F compatible with all frame sizes of the 1336 PLUS II drive series?
The 1336F-MCB-SP1F is the main control board for the 1336 PLUS II (catalog prefix 1336F) series. It is designed for compatibility across multiple frame sizes within this series. However, because Allen-Bradley produced several hardware revisions of the 1336 PLUS II over its production life, it is recommended to verify the drive’s series letter and firmware revision before ordering. Cross-referencing the existing board’s part number and the drive’s nameplate data ensures correct fitment and avoids communication or parameter compatibility issues during commissioning.

Q2: Can the 1336F-MCB-SP1F be integrated into a ControlLogix-based EtherNet/IP architecture?
The 1336 PLUS II platform communicates via DPI (Drive Peripheral Interface) and supports communication adapters including the 1336-BDN (DeviceNet) and 1336-GM1 (Remote I/O). Direct EtherNet/IP connectivity requires an appropriate gateway or scanner module at the network layer. In modern system designs, a 1203-USB or 1203-SSS DPI-to-serial converter can be used for parameter configuration, while a DeviceNet-to-EtherNet/IP linking device bridges the drive to a ControlLogix EtherNet/IP network. This architecture preserves the investment in existing 1336 PLUS II hardware while enabling system integration with current-generation Logix control platforms.

Q3: What does the 12-Month Warranty cover, and how does it support long-term maintenance planning?
The 12-Month Warranty covers manufacturing defects and functional failures under normal operating conditions from the date of shipment. For maintenance engineers managing plant-wide spare parts programs, this warranty provides assurance that replacement boards sourced for critical drive applications will perform to specification upon installation. In practice, this means that spare 1336F-MCB-SP1F boards held in inventory are covered during the storage period, reducing the financial risk of maintaining strategic spares. For long-term maintenance planning, it is recommended to store spare boards in a climate-controlled environment within their original anti-static packaging to preserve warranty validity and ensure readiness for immediate deployment when required.

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