Description
The 1336F-MCB-SP1K is a factory-original Main Control Board (MCB) manufactured by Allen-Bradley (Rockwell Automation). It serves as the central processing and intelligence unit of the 1336 PLUS II (1336F) and 1336 FORCE series of adjustable frequency AC drives, functioning as the “brain” that executes all motor control algorithms, manages I/O signal processing, stores drive parameters in non-volatile memory, and coordinates communication between the power stage, operator interface, and external control systems.
Designed for Frame A drive configurations, the 1336F-MCB-SP1K integrates a high-performance dedicated microprocessor, application-specific integrated circuits (ASICs), and memory to perform complex real-time calculations for motor control across V/Hz, sensorless vector, and closed-loop flux vector control modes. It is a Level 1 spare part—one board required per drive—and is a cornerstone of any critical-spare strategy for maintaining legacy 1336-series drive assets.
Application Scenarios
Consider a water treatment facility where a 15-HP influent pump is controlled by a 1336 PLUS II drive that has run without incident for 18 years. One morning the drive powers up but immediately displays a “Control Board Fault” and refuses to accept commands from the plant PLC. The motor, power module, and gate drive board all test clean. The HIM shows parameter corruption and the drive will not enter run mode. A full drive replacement would mean re-engineering the panel, re-terminating three-phase power and motor leads, re-entering dozens of parameters, and a multiday outage during which the pump station operates on bypass—a scenario that risks overflow and regulatory non-compliance.
By sourcing a tested 1336F-MCB-SP1K main control board, the plant’s maintenance team performs a board-level swap in under 90 minutes. After backing up the original parameters via the HIM (where still readable) and restoring them to the replacement board, the drive returns to service with identical tuning. The cabinet wiring, communication settings, and accessory ecosystem remain untouched. This is the high-value role the 1336F-MCB-SP1K plays in MRO programs worldwide: restoring a proven installed asset to full operation without the cost, downtime, and risk of a complete drive change-out.
Parameter
| Main Parameters | Value / Description |
|---|---|
| Product Model | 1336F-MCB-SP1K (Variant: 1336F-MCB-SP1K-A) |
| Manufacturer | Allen-Bradley / Rockwell Automation (USA) |
| Product Type | Main Control Board (MCB) / Logic Board Assembly |
| Compatible Drive Series | 1336 PLUS II (1336F), 1336 FORCE, 1336 IMPACT |
| Compatible Drive Frame | Frame A (SP1K designation) |
| Board Function | Core control, logic processing, I/O signal handling, parameter storage |
| Processor | High-performance dedicated microprocessor for motor control |
| Control Modes | V/Hz, Sensorless Vector Control (SVC), Closed-Loop Flux Vector Control |
| Memory | Non-volatile memory for parameters, fault logs, and firmware |
| Analog Inputs | 0–10 kΩ; 0–10 VDC; 0–20 mA (speed/torque reference) |
| Analog Outputs | 0–10 VDC; 0–20 mA (metering / process monitoring) |
| Digital Outputs | CR1, CR2, CR3 — Programmable Relay Contacts |
| Communication Ports | Integrated SCANport (DPI) for PanelView, SLC, PLC-5, Remote I/O; optional adapter modules (DeviceNet, ControlNet, DH+) |
| Human Interface | Direct connection for 1336 HIM (Human Interface Module) |
| Encoder Feedback | Supports incremental encoder interface for closed-loop vector control |
| Logic Voltage | 5 VDC (internal) |
| Input Power | 115 VAC ±10% (control power) |
| Operating Temperature | 0 °C to +40 °C (non-condensing, within drive enclosure) |
| Protection Features | Overcurrent, overvoltage, ground fault, motor overload, dynamic braking control |
| Board-to-Board Interface | Backplane interface with power board, gate driver board, and option cards |
| Connector Details | J2 jumper (Pins 3/4 and 17/18); CR1/CR2/CR3 relay interface |
| Quantity Required per Drive | 1 |
| Spare Part Level | Level 1 (Major Assembly) |
| Mounting Method | Slide-mount stand-offs on control board/adapter mounting plate; keyed ribbon connectors |
| Physical Dimensions | 21.6 cm × 38.1 cm × 2.5 cm |
| Weight | 0.4 – 0.5 kg |
| ESD Sensitivity | Static-sensitive; anti-static handling required |
| Product Lifecycle Status | Discontinued / Obsolete (available as surplus, refurbished, or repaired) |
