Allen-Bradley 1336F-BRF20-AE-EN-L5E System-Ready VFD for 1336 Plus II Architecture

Allen-Bradley 1336F-BRF20-AE-EN-L5E System-Ready VFD for 1336 Plus II Control Architecture

The Allen-Bradley 1336F-BRF20-AE-EN-L5E is a purpose-built AC variable frequency drive engineered for seamless integration within the 1336 Plus II control system architecture. Rather than functioning as a standalone component, this drive is designed to operate as a coordinated element within a layered automation hierarchy — interfacing with programmable logic controllers, I/O subsystems, communication networks, power distribution modules, and human-machine interface platforms to deliver consistent, scalable, and maintainable motion control across demanding industrial environments.

In modern industrial automation, the value of a variable frequency drive is not measured solely by its standalone performance specifications, but by how effectively it participates in the broader control system ecosystem. The 1336F-BRF20-AE-EN-L5E addresses this requirement directly. Its architecture-ready design ensures that system engineers can deploy this drive within existing 1336 Plus II installations without compromising signal integrity, communication stability, or control loop performance. Whether integrated into a new greenfield project or retrofitted into an existing production line, this drive maintains the system-level consistency that long-term industrial operations demand.

From a control layer perspective, the 1336F-BRF20-AE-EN-L5E is optimized for coordination with Allen-Bradley ControlLogix and CompactLogix programmable automation controllers. The drive accepts command signals and feedback data through established communication pathways, enabling the PLC to maintain closed-loop supervisory control over motor speed, torque, and direction without requiring additional signal conditioning hardware. This tight integration reduces engineering overhead during commissioning and simplifies diagnostic workflows during ongoing maintenance cycles.

At the I/O layer, the drive supports analog and digital signal interfaces that align with standard Allen-Bradley 1756 ControlLogix I/O modules and 1769 CompactLogix I/O expansion cards. This compatibility allows system architects to route process signals — including speed references, fault outputs, run/stop commands, and status feedback — through the existing I/O infrastructure without introducing proprietary wiring schemes or custom interface boards. The result is a cleaner panel layout, reduced wiring complexity, and faster fault isolation during troubleshooting.

Network layer integration is a critical consideration for any drive deployed in a distributed control environment. The 1336F-BRF20-AE-EN-L5E supports communication protocols consistent with the 1336 Plus II platform, enabling data exchange with network-connected devices including Allen-Bradley 1203 communication adapter modules and DeviceNet or Remote I/O network nodes. This connectivity allows the drive to participate in system-wide diagnostics, parameter monitoring, and remote configuration — capabilities that are essential for facilities operating under predictive maintenance programs or remote monitoring frameworks.

Power layer compatibility is equally important in ensuring system reliability. The 1336F-BRF20-AE-EN-L5E is designed to operate within the voltage and current parameters established by the 1336 Plus II platform, making it compatible with Allen-Bradley 1336-MOD power conditioning modules and standard industrial power distribution architectures. Proper power layer alignment reduces harmonic disturbances, protects upstream distribution equipment, and ensures that the drive operates within its thermal design envelope across the full range of load conditions.

At the human-machine interface layer, the drive’s status and parameter data can be surfaced through Allen-Bradley PanelView operator terminals and FactoryTalk View supervisory software. This integration gives operators real-time visibility into drive performance metrics — including output frequency, motor current, fault codes, and run-time hours — without requiring dedicated drive configuration software at the machine level. Centralized HMI access also supports faster operator response to process deviations and simplifies shift handover procedures in continuous production environments.

For execution layer applications, the 1336F-BRF20-AE-EN-L5E delivers reliable motor control across a range of industrial actuator types, including induction motors used in conveyor systems, pump stations, fan arrays, compressor drives, and material handling equipment. Its control algorithms support both volts-per-hertz and sensorless vector control modes, providing the flexibility needed to match drive performance to the specific torque and speed characteristics of the connected load.

Redundancy and system resilience are addressed through the drive’s fault management architecture. In the event of a drive fault, the 1336F-BRF20-AE-EN-L5E generates structured fault codes that are transmitted to the supervisory PLC, enabling automated fault response routines — including controlled shutdown sequences, alarm annunciation, and switchover to redundant drive configurations where applicable. This behavior supports the design of high-availability control systems in which unplanned downtime carries significant operational or safety consequences.

Long-term maintainability is a defining characteristic of the 1336 Plus II platform, and the 1336F-BRF20-AE-EN-L5E upholds this standard. Spare parts availability, firmware compatibility with existing 1336 Plus II installations, and consistent parameter structures across the drive family reduce the engineering effort required to maintain aging automation systems. Facilities that have standardized on the 1336 Plus II architecture can integrate this drive without retraining maintenance personnel or updating system documentation beyond standard change management procedures.

Every 1336F-BRF20-AE-EN-L5E supplied by ZYPLC is covered by a 12-Month Warranty and undergoes functional testing prior to shipment. Stock availability is maintained to support both planned procurement cycles and urgent replacement requirements, minimizing the risk of extended production downtime due to drive unavailability.

Architecture Specification Table

Coordinated Control System Design

The 1336F-BRF20-AE-EN-L5E achieves its full operational potential when deployed as part of a coordinated control system rather than as an isolated component. In a typical 1336 Plus II architecture, the drive operates downstream of an Allen-Bradley ControlLogix L6x or L7x series processor, which issues speed and direction commands via a DeviceNet network node or through a 1203-GU6 universal gateway module. The processor’s scan cycle is synchronized with the drive’s control loop update rate, ensuring that command changes are reflected in motor output without introducing latency that could affect process quality.

Power conditioning for the drive is typically provided by an Allen-Bradley 1336-MOD line filter or a compatible harmonic mitigation module, which protects both the drive and upstream distribution transformers from switching transients generated during acceleration and deceleration cycles. In cabinet installations, the drive is mounted alongside Allen-Bradley 1492 terminal block assemblies and 1492-CABLE pre-wired interface cables, which standardize the wiring interface between the drive’s control terminals and the system’s I/O infrastructure.

For applications requiring operator interaction at the machine level, an Allen-Bradley PanelView 800 or PanelView Plus 7 terminal provides a local HMI interface, displaying drive status, fault history, and process variables in a format accessible to production operators without requiring access to the engineering workstation. At the network level, an Allen-Bradley 1756-ENBT EtherNet/IP bridge module or a 1756-DNB DeviceNet scanner card in the ControlLogix chassis manages communication between the supervisory PLC and the drive network, ensuring deterministic data exchange across the full system.

In redundant drive configurations, a second 1336F-series drive may be installed in a hot-standby arrangement, with automatic switchover logic programmed in the ControlLogix processor using standard Add-On Instructions. This architecture is commonly specified in water treatment pump stations, HVAC systems, and continuous process lines where unplanned motor stops carry significant operational consequences. The consistent parameter structure across the 1336F drive family simplifies the configuration of redundant pairs and reduces the risk of parameter mismatch during switchover events.

Application in Layered Automation Systems

The 1336F-BRF20-AE-EN-L5E is deployed across a broad range of industrial sectors where layered automation architectures are standard practice. In manufacturing environments — including automotive assembly, food and beverage processing, and packaging lines — the drive controls conveyor motors, indexing tables, and filling station actuators within PLC-supervised production sequences. Its ability to accept speed references from the supervisory controller in real time allows production rates to be adjusted dynamically in response to upstream process conditions without manual operator intervention.

In the power generation and electrical utility sector, the drive is used to control auxiliary equipment including cooling fans, lubrication pumps, and fuel handling conveyors. These applications demand high reliability and predictable fault behavior, both of which are supported by the drive’s structured fault reporting and its compatibility with the ControlLogix redundancy framework. In petrochemical and refinery applications, the drive controls process pumps and compressor auxiliaries in environments where precise flow control and energy efficiency are critical operational parameters.

Water and wastewater treatment facilities deploy the 1336F-BRF20-AE-EN-L5E in pump station control panels, where it manages the speed of submersible and centrifugal pumps in response to level sensor signals processed by the supervisory PLC. The drive’s DeviceNet connectivity allows pump status data to be integrated into the facility’s SCADA system, providing operators with real-time visibility into pump performance across geographically distributed pump stations. In mining and mineral processing applications, the drive controls ore conveyor drives, slurry pump motors, and ventilation fan systems in environments characterized by high ambient temperatures, heavy dust loading, and continuous duty cycles.

Metallurgical and steel processing facilities use the drive in rolling mill auxiliary drives, cooling water pump systems, and fume extraction fan arrays. In these applications, the drive’s sensorless vector control mode provides the torque response characteristics needed to maintain consistent motor performance under variable load conditions without the complexity and maintenance requirements associated with encoder-based feedback systems.

Architecture Engineering FAQ

Q1: Is the 1336F-BRF20-AE-EN-L5E compatible with existing 1336 Plus II control system installations, and does it require firmware updates before integration?
The 1336F-BRF20-AE-EN-L5E is designed as a direct replacement and expansion component within the 1336 Plus II platform. It shares the parameter structure, communication protocol support, and I/O interface conventions of the broader 1336F drive family, allowing it to be integrated into existing installations with minimal configuration effort. Firmware compatibility should be verified against the installed version of the supervisory PLC program and any existing 1203 communication adapter modules. ZYPLC provides pre-shipment functional testing and technical documentation to support commissioning, and the 12-Month Warranty covers any firmware-related issues identified during the integration process.

Q2: What communication adapters are required to connect the 1336F-BRF20-AE-EN-L5E to a DeviceNet or Remote I/O network in a ControlLogix-based system?
Network connectivity for the 1336F-BRF20-AE-EN-L5E is established through Allen-Bradley 1203-series communication adapter modules, which mount directly to the drive’s communication port and provide the physical and protocol interface required for DeviceNet or Remote I/O network participation. In a ControlLogix-based system, the network is managed by a 1756-DNB DeviceNet scanner card or a 1756-RIO Remote I/O scanner installed in the ControlLogix chassis. The specific adapter model required depends on the network type and the drive’s installed option configuration. ZYPLC’s technical team can assist in identifying the correct adapter model based on the customer’s existing network architecture.

Q3: What does the 12-Month Warranty cover, and what support is available for long-term maintenance of the 1336F-BRF20-AE-EN-L5E in aging automation systems?
The 12-Month Warranty provided by ZYPLC covers manufacturing defects, functional failures identified during normal operation, and any issues arising from the pre-shipment testing and handling process. Warranty claims are processed through ZYPLC’s technical support team, which provides replacement units or repair services as appropriate. For long-term maintenance support, ZYPLC maintains stock of 1336F-series drives and compatible accessories to support both planned replacement programs and emergency procurement requirements. Customers operating aging 1336 Plus II installations are encouraged to establish a spare parts inventory strategy in consultation with ZYPLC’s engineering team to minimize the risk of extended downtime due to drive unavailability as the platform approaches end-of-production status.

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