Product Overview

The Allen-Bradley 1336F-BRF100-AE-EN​ is a high-performance Adjustable Frequency AC Drive (Variable Frequency Drive / VFD) belonging to Rockwell Automation’s Bulletin 1336 PLUS II product family, designed for precise open-loop speed and torque control of three-phase squirrel-cage induction motors up to 75 kW (100 HP) at 480 VAC. This model accepts a three-phase input of 380–480 VAC (±10%) and delivers a rated output current of 100 A, with a 150% overload capability for 60 seconds to handle demanding starting and transient load conditions typical of conveyor, pump, fan, and machinery applications. The Allen-Bradley 1336F-BRF100-AE-EN​ supports both Volts-per-Hertz (V/f) scalar control and sensorless vector control modes, the latter providing enhanced low-speed torque and speed regulation without the need for a shaft-mounted encoder—making it suitable for both general-purpose and moderately demanding variable torque or constant torque loads.The “AE-EN” suffix denotes that this unit is equipped with the standard Allen-Bradley Human Interface Module (HIM) featuring a two-line, 16-character alphanumeric LCD display with English language menus, and that it does not include a built-in dynamic brake resistor or RFI line filter (designated by the “F” and “00” fields in the catalog number). Communication-ready, the Allen-Bradley 1336F-BRF100-AE-EN​ includes an RS-485 port for SCADA/MMI integration using Drive Serial Interface (DSI) protocol and accepts optional plug-in communication cards for DeviceNet, ControlNet, PROFIBUS-DP, and EtherNet/IP, aligning it with Rockwell Automation’s Integrated Architecture strategy. The drive is housed in an IP20 / NEMA Type 1 (when optionally enclosed) open-type chassis for panel mounting and incorporates forced-air cooling via an integral fan sized for Frame F. For plants operating legacy 1336 PLUS II drives, the Allen-Bradley 1336F-BRF100-AE-EN​ remains a critical spare and replacement item to sustain production lines without requiring a full control system migration.

Technical Specifications

Product Model | 1336F-BRF100-AE-ENManufacturer | Rockwell Automation / Allen-Bradley (USA)Product Type | Adjustable Frequency AC Drive (VFD / Inverter)Series | Bulletin 1336 PLUS IIInput Voltage | 3-Phase, 380–480 VAC (±10%), 50/60 HzRated Output Current | 100 A (Continuous, at 40 °C ambient)Rated Output Power | 75 kW / 100 HP (Typical @ 480 V, variable torque)Overload Rating | 150% of rated current for 60 s; 200% for 3 sOutput Frequency Range | 0.0–320 Hz (programmable upper limit)Control Modes | V/f (Linear / Squared / Custom), Sensorless Vector Control (SVC)Analog I/O | 2 Analog Inputs (0–10 V, 4–20 mA, configurable), 1 Analog Output (0–10 V / 4–20 mA)Digital I/O | 6 Programmable Digital Inputs (24 V DC sink/source), 2 Relay Outputs (Form C, 10 A @ 250 V AC), 1 Transistor Output (NPN/PNP)Communication | RS-485 DSI port (standard); option slots for DeviceNet, ControlNet, PROFIBUS-DP, EtherNet/IPHuman Interface | Integral HIM with 2-line × 16-char alphanumeric LCD, English menus, keypad for start/stop/jog/parameter entryEnclosure / Protection | IP20 Open Type (Chassis), NEMA/UL Type 1 when enclosedCooling | Forced air via rear-mounted fan (Frame F)Dimensions (H×W×D) | Approx. 419 × 279 × 221 mmWeight | Approx. 22.7 kg

Main Features and Advantages

Flexible control for varied loads: The Allen-Bradley 1336F-BRF100-AE-EN​ gives users the choice between simple V/f control for pumps and fans, and sensorless vector control for applications requiring high starting torque (e.g., extruders, hoists, conveyors). In sensorless vector mode, the drive estimates rotor flux and slip electronically, delivering up to 150% rated torque at 0.5 Hz—performance that rivals closed-loop drives in many general machinery contexts, without added encoder cost or wiring.Comprehensive built-in I/O and programmability: With six digital inputs, two analog inputs, two relay outputs, and one transistor output as standard, the Allen-Bradley 1336F-BRF100-AE-EN​ can execute multi-speed presets, jog functions, forward/reverse commands, fault relays, and speed/torque references directly—often eliminating the need for a small PLC just to coordinate basic drive logic. The built-in PID loop further enables the drive to act as a standalone process controller for applications such as pressure- or flow-regulated pumping.Intuitive English-language HMI with diagnostics: The integrated keypad and backlit LCD on the Allen-Bradley 1336F-BRF100-AE-EN​ present parameter names, fault codes, and status messages in plain English rather than cryptic numeric codes alone. The drive stores the last four fault occurrences with time stamps and fault type, allowing maintenance personnel to quickly identify whether a trip was caused by overcurrent, loss of line power, external fault input, or over-temperature—reducing mean time to diagnose (MTTD).Smooth motion control features: The Allen-Bradley 1336F-BRF100-AE-EN​ offers S-curve acceleration/deceleration profiles to reduce mechanical shock on belted drives and gearboxes, DC injection braking for controlled stopping without a mechanical brake, and flying start capability to pick up a coasting motor without tripping. These features extend the life of connected mechanical components and improve product quality on lines where jerky starts cause spillage or misalignment.Expandable communications architecture: Although the base unit communicates via RS-485/DSI, the Allen-Bradley 1336F-BRF100-AE-EN​ has a dedicated option slot for Rockwell Automation scanner/adapter modules. This allows seamless integration into existing DeviceNet or ControlNet networks in legacy plants, or PROFIBUS-DP / EtherNet/IP in mixed-vendor environments, making the drive adaptable as the plant’s network architecture evolves.Legacy system continuity and spare-parts availability: Many 1336 PLUS II drives remain in continuous 24×7 service worldwide. The Allen-Bradley 1336F-BRF100-AE-EN​ is frequently sourced as a direct replacement to keep mature process lines running. Verified surplus and refurbished units with full functional testing provide a cost-effective alternative to complete drive train modernization when the existing control philosophy and cabling are still valid.