Description
The 1336F-MCB-SP1F is a main control board (MCB) manufactured by Allen-Bradley / Rockwell Automation, designed as the central CPU control panel board for the 1336 PLUS II Adjustable Frequency AC Drive platform. As the primary inverter control circuit board, it manages motor control logic, signal processing, and system coordination across drive frames B through G.
This board serves as the central interface between the drive‘s power section and external control systems, hosting the TB2 terminal block for VFD I/O connections and providing mounting locations for option cards including RIO boards and the Human Interface Module (HIM). The 1336F-MCB-SP1F is a critical spare component for facilities maintaining legacy 1336 PLUS II drive installations, as it has been discontinued by the manufacturer and superseded by the 1336S-MCB-SP1M .
Application Scenarios
In a manufacturing plant running Allen-Bradley 1336 PLUS II drives on critical process equipment, a main control board failure means the drive cannot process I/O signals, execute motor control algorithms, or communicate with the plant‘s control system. The 1336F-MCB-SP1F addresses this exact vulnerability. When a drive exhibits symptoms such as failure to respond to start commands, loss of analog input signal processing, or complete loss of control functionality, the main control board is often the root cause.
The 1336F-MCB-SP1F hosts the TB2 terminal block where analog inputs (0-10K Ohm, 0-10 VDC, 0-20 mA) and programmable contact outputs (CR1, CR2, CR3) are terminated . It also provides the mounting interface for the RIO option board, drive-mounted HIM, internal communications module, and control interface board option card . In facilities where 1336 PLUS II drives remain in service across conveyors, extruders, mixers, or process pumps, having a 1336F-MCB-SP1F available as a spare reduces the risk of extended downtime. For maintenance engineers managing aging drive infrastructure, this board represents a targeted repair solution that preserves the existing drive installation rather than requiring a full system replacement.
The board’s compatibility with drive frames B through G means it covers a wide range of drive power ratings—from 7.5 HP in Frame B up to 650 HP in Frame G—making it a versatile spare across mixed drive populations within a single facility .
Parameter
| Main Parameters | Value / Description |
|---|---|
| Product Model | 1336F-MCB-SP1F |
| Manufacturer | Allen-Bradley / Rockwell Automation |
| Product Category | Main Control Board (CPU Control Panel Board) |
| Product Family | 1336 PLUS II Drives |
| Input Power | 115 V AC |
| Compatible Drive Frames | B through G |
| Drive Voltage Range | 230 to 460 V AC |
| Analog Inputs | 0-10K Ohm; 0-10 VDC; 0-20 mA |
| Analog Output | 0-10 VDC |
| Contact Outputs | CR1, CR2, CR3 (programmable) |
| I/O Terminal Block | TB2 |
| Wire Size (Recommended) | 18 AWG, twisted pair shielded (Belden 8760/8770/9460 or equivalent) |
| Dimensions | 22.9 × 30.5 × 22.9 cm |
| Weight | 2.27 kg (5.00 lbs) |
| Product Status | Discontinued / Obsolete |
| Superseded By | 1336S-MCB-SP1M |
