Allen-Bradley 1336F-BRF100-AE-EN Fail-Safe VFD Drive

Overview

Allen-Bradley 1336F-BRF100-AE-EN Fail-Safe VFD Drive: Fail-Safe Protection for Critical Industrial Control Reliability

The Allen-Bradley 1336F-BRF100-AE-EN is a 100HP AC Variable Frequency Drive engineered for continuous, fail-safe operation in the most demanding industrial environments. Designed within Rockwell Automation’s 1336 FORCE series, this drive delivers robust motor control with integrated safety architecture, making it the preferred choice for critical process lines where unplanned downtime carries severe operational and safety consequences. Whether deployed in high-EMI switchgear rooms, dusty mineral processing facilities, humid coastal plants, or high-vibration heavy machinery cabinets, the 1336F-BRF100-AE-EN maintains stable, reliable output under conditions that would compromise lesser drives.

At the core of its fail-safe design is a Safe Torque Off (STO) function that removes motor-driving power without requiring a full system de-energization cycle, enabling rapid response to safety interlocks without triggering cascading shutdowns across the control loop. This is critical in petrochemical, power generation, and water treatment facilities where a single uncontrolled stop can trigger process upsets or safety system activations. The drive’s integrated surge suppression and EMI filtering circuitry protect against voltage transients and electromagnetic interference that are endemic to industrial power distribution networks, preventing signal drift and nuisance trips that erode process stability.

The 1336F-BRF100-AE-EN supports EtherNet/IP communication, enabling seamless integration with Allen-Bradley ControlLogix and CompactLogix PLC platforms. In a typical control cabinet architecture, this drive operates alongside components such as the Allen-Bradley 1756-L73 ControlLogix controller, which manages the supervisory logic and safety interlock sequences. Power conditioning upstream is typically handled by a 1606-XLP power supply module, ensuring the drive’s control circuitry receives clean, regulated DC power even during line voltage fluctuations. For cabinet-level surge protection, a 1492-SPM series surge protective device is commonly installed at the incoming power rail to absorb transient energy before it reaches sensitive drive electronics.

In high-availability process lines, the 1336F-BRF100-AE-EN is frequently paired with a 1336-GM1 remote I/O gateway or a 20-COMM-E EtherNet/IP communication adapter to extend drive diagnostics and fault data to the plant SCADA system, enabling predictive maintenance workflows and reducing mean time to repair. For applications requiring coordinated multi-axis motion, the drive integrates with Kinetix servo drive systems through the common Logix control backbone, maintaining synchronized speed and torque profiles across complex mechanical systems. Cabinet thermal management is supported by 1336-MOD-L2E drive cooling fan modules, which maintain internal temperatures within safe operating limits in high-ambient or poorly ventilated enclosures.

Fail-Safe Reliability Table

Control Cabinet Protection Strategy

Deploying the 1336F-BRF100-AE-EN within a well-engineered control cabinet requires a layered protection strategy that addresses power quality, thermal management, communication integrity, and safety interlock coordination. At the power entry point, a 1492-SPM surge protective device clamps transient overvoltages generated by nearby switching equipment, motor starts, or utility grid disturbances, preventing energy spikes from reaching the drive’s input rectifier stage. A 1606-XLP series power supply provides regulated 24V DC to the drive’s control board and I/O modules, isolating control logic from the noise and ripple present on the main AC bus.

The drive’s EtherNet/IP port connects to a managed industrial Ethernet switch — typically a Stratix 5700 series switch — which provides VLAN segmentation and port-level fault isolation, ensuring that a communication fault on one node does not propagate to the broader control network. The 1756-L73 ControlLogix controller executes the safety interlock logic, monitoring process variables from field instruments and issuing STO commands to the 1336F-BRF100-AE-EN when process limits are exceeded, without requiring a full cabinet power-down. Cabinet thermal integrity is maintained through structured airflow management and 1336-MOD-L2E cooling fan modules, which are monitored for fault conditions and alarmed through the PLC’s I/O tree. This integrated approach eliminates the most common failure modes — surge damage, thermal runaway, communication loss, and interlock failure — that cause unplanned shutdowns in continuous process environments.

Critical Industrial Safety Applications

The 1336F-BRF100-AE-EN is deployed across a broad range of safety-critical industrial sectors where motor control reliability directly impacts process safety and production continuity. In petrochemical and refinery applications, the drive controls compressor and pump motors within hazardous area control loops, where the STO function provides a certified safe state without requiring manual intervention in restricted zones. In electric power generation facilities, it manages boiler feed pump and cooling water pump drives, where a nuisance trip or control interruption can force a costly and potentially dangerous unit shutdown.

Mining and mineral processing operations rely on the 1336F-BRF100-AE-EN for conveyor belt drives, crusher feed systems, and slurry pump control, where high dust concentrations, vibration, and wide ambient temperature swings demand a drive with proven environmental robustness. Municipal and industrial water treatment plants deploy this drive on aeration blower and clarifier drive systems, where continuous operation is mandated by regulatory compliance requirements and process safety plans. In port and marine terminal applications, the drive controls crane hoist and gantry travel motors, where precise speed control and fail-safe braking are essential for load safety and equipment protection. Metallurgical and steel mill environments use the drive in rolling mill auxiliary drives and furnace exhaust fan systems, where high ambient temperatures and electromagnetic interference from induction heating equipment test the limits of drive thermal and EMI tolerance.

Safety and Quality FAQ

Q: What does the support terms confirmed by quotation cover for the 1336F-BRF100-AE-EN?
A: The support terms confirmed by quotation cover all manufacturing defects, component failures, and functional faults under normal operating conditions from the date of shipment. It includes technical support for fault diagnosis and, where applicable, unit replacement or repair at no additional cost to the buyer.

Q: What pre-shipment testing is performed before dispatch?
A: Each 1336F-BRF100-AE-EN unit undergoes a full functional test under load conditions prior to shipment, including power-on verification, output voltage and frequency accuracy checks, communication port validation, and STO function confirmation. Test records are available upon request.

Q: Is the 1336F-BRF100-AE-EN compatible with existing Allen-Bradley ControlLogix and CompactLogix systems?
A: Yes. The drive’s EtherNet/IP communication interface is fully compatible with Allen-Bradley ControlLogix (1756 series) and CompactLogix (1769 series) controllers using standard Add-On Instructions (AOIs) and RSLogix 5000 / Studio 5000 programming environments. No additional communication adapters are required for EtherNet/IP integration.

Q: Can long-term supply and replacement support be arranged for this SKU?
A: Yes. KNMKS maintains buffer stock of the 1336F-BRF100-AE-EN and related 1336 FORCE series components to support long-term supply agreements, planned maintenance schedules, and emergency replacement requirements. Contact our team to discuss forward stock arrangements and lead-time commitments for your facility.

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Product Identification

Brand / Ecosystem

Allen-Bradley
Allen-Bradley

Model / Series

1336F-BRF100-AE-EN

Product Family

Variable Frequency Drives

Availability Status

Available on request after model and quantity confirmation

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B2B RFQ, replacement inquiry and project spare-part request

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Specification & Inquiry Focus

Drive range

AC drives, VFDs and accessories

Common needs

Voltage, kW/HP and load type

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Motor control, energy saving and spares

Inquiry Support

• Input/output voltage and kW/HP confirmation
• Energy-saving motor control inquiry
• Accessory and spare-unit support

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