Allen-Bradley 1336F-BRF10-AA-EN Variable Frequency Drive – 1336 FLEX

Allen-Bradley 1336F-BRF10-AA-EN: 1HP FLEX AC Drive with EtherNet/IP in Industrial Motor Control Architecture

The 1336F-BRF10-AA-EN occupies a well-defined position in distributed motor control architectures: it is a 0.75 kW (1 HP) pulse-width-modulated voltage-source inverter operating on a 200–240 V AC three-phase supply, with an integrated EtherNet/IP communication adapter that places it directly on a standard IEEE 802.3 plant network. Within a control loop, this drive functions as the final actuator between the supervisory PLC and the induction motor shaft. The drive receives a speed or torque reference via EtherNet/IP implicit messaging (Class 1, cyclic), executes the V/Hz or sensorless-vector algorithm in its DSP core, and modulates the IGBT bridge at a carrier frequency of 2–10 kHz to synthesize the required output voltage vector. The result is deterministic speed regulation with a steady-state accuracy of ±0.5% of base speed under V/Hz mode, tightening to ±0.1% under closed-loop sensorless vector when motor nameplate data is entered via the autotune routine.

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Technical Parameters

Hardware Logical Analysis

The 1336F-BRF10-AA-EN is built around a three-phase diode rectifier front-end that converts the 200–240 V AC supply to an unregulated DC bus nominally at 325 V DC. A bulk electrolytic capacitor bank on the DC bus provides ride-through energy during brief input sags and decouples the rectifier switching harmonics from the inverter stage. The inverter section uses six IGBTs arranged in a standard three-phase H-bridge topology. Gate drive signals are generated by the DSP control board, which executes the space-vector PWM algorithm at the selected carrier frequency. At 4 kHz carrier, the output voltage THD is typically below 5% when measured at the motor terminals with a standard cable length under 30 m.

The EtherNet/IP adapter (EN module) is a discrete daughterboard that interfaces to the drive’s internal serial backplane via an SPI-like proprietary bus. The adapter implements the CIP (Common Industrial Protocol) stack, supporting both explicit messaging (Class 3, for parameter read/write) and implicit messaging (Class 1, for cyclic I/O). The adapter’s MAC address is factory-programmed and the IP address is configurable via BOOTP, DHCP, or static assignment through the HIM or RSLinx. This architecture means the drive’s control loop execution and the EtherNet/IP stack run on separate processors, preventing network jitter from affecting the PWM timing — a critical design decision for deterministic motor control.

EMC performance is addressed at the hardware level through a combination of internal common-mode chokes on the output phase leads, a varistor-based input transient suppressor rated at 480 V clamping voltage, and a shielded control board layout with a dedicated analog ground plane isolated from the digital ground. The drive meets EN 61800-3 Category C2 conducted emissions limits when installed with the recommended line filter. The IGBT gate drive circuits incorporate desaturation detection, which shuts down the affected switch within 2 µs of a short-circuit event, protecting both the IGBT and the motor winding insulation.

System Integration Benefits

• Native CIP Integration: The EN adapter maps drive parameters directly into the Logix tag database via Add-On Profiles (AOPs), eliminating manual I/O mapping and reducing commissioning time by an estimated 40% compared to analog reference wiring.
• Deterministic Cyclic I/O: Class 1 implicit messaging with a configurable RPI (Requested Packet Interval) as low as 10 ms delivers speed reference and status feedback within a single PLC scan cycle on ControlLogix platforms.
• Unified Diagnostics: Fault codes, operating hours, DC bus voltage, output current, and heatsink temperature are all readable as CIP attributes, enabling FactoryTalk View dashboards to display drive health without additional field wiring.
• Parameter Backup via EDS: The Electronic Data Sheet (EDS) file allows RSNetWorx and Studio 5000 to store a complete parameter set in the project file, enabling one-click drive replacement without manual parameter re-entry.
• Autotune for Motor Characterization: The static autotune routine measures stator resistance and leakage inductance from the drive terminals, compensating for cable impedance and improving sensorless vector accuracy without a motor encoder.
• Programmable Digital I/O: Six programmable digital inputs and two relay outputs allow local interlocking (e.g., motor thermistor trip, external fault) independent of the network, maintaining safety functions even during a network outage.
• Dynamic Braking Transistor: The internal braking chopper activates when the DC bus exceeds 390 V DC during deceleration, dissipating regenerative energy through an external resistor and enabling controlled stop profiles without overvoltage trips on high-inertia loads.
• Scalable Architecture: The 1336 FLEX mechanical form factor uses a common mounting footprint across the 0.37–22 kW power range, allowing drive replacement or capacity upgrade without panel redesign — a significant advantage in retrofit projects.

Quality Assurance & Global Logistics

Every unit of the 1336F-BRF10-AA-EN supplied by siemensplc.com is sourced through verified channels with full traceability to authorized Allen-Bradley distribution networks. Prior to shipment from our Xiamen, China facility, each drive undergoes a structured inspection protocol: visual examination of PCB assemblies for solder joint integrity, capacitor condition assessment, IGBT gate drive signal verification under no-load power-up, and EtherNet/IP adapter connectivity confirmation via ping and CIP identity object query. Firmware version is recorded and matched against the customer’s existing fleet where specified.

Packaging follows IEC 60068-2-27 shock and vibration guidelines: drives are individually wrapped in anti-static polyethylene foam, placed in double-wall corrugated cartons with minimum 50 mm cushioning on all six faces, and sealed with tamper-evident tape. Each shipment includes a packing list, inspection record, and certificate of conformance. For orders requiring third-party inspection (SGS, BV, or equivalent), coordination is available upon request.

Logistics from Xiamen port to major global destinations: DHL Express to Europe 3–5 business days, FedEx International Priority to North America 4–6 business days, sea freight LCL consolidation for bulk orders with 12–18 day transit to European ports. EXW Xiamen Incoterms available for freight forwarder-managed shipments. All export documentation — commercial invoice, packing list, certificate of origin, and HS code 8504.40 classification — is prepared in compliance with destination country import requirements.

The 12-month warranty covers defects in materials and workmanship under normal operating conditions as defined in the Allen-Bradley 1336 FLEX installation manual. Warranty claims are processed within 5 business days of receipt of the returned unit, with advance replacement available for critical production environments subject to prior agreement.

Contact Information

Email: [email protected]
WhatsApp: +86 18359268345
Web: siemensplc.com
Location: Xiamen, China
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