Allen-Bradley 1336-B005-EAD-FA2-L1-S1 Fail-Safe VFD

Overview

Allen-Bradley 1336-B005-EAD-FA2-L1-S1 Fail-Safe VFD: Fault Protection for Critical Industrial Control Reliability

The Allen-Bradley 1336-B005-EAD-FA2-L1-S1 is a 0.5HP (0.37kW) AC variable frequency drive from Rockwell Automation’s proven 1336 PLUS series, engineered for fail-safe motor speed control in demanding industrial environments. Designed to sustain continuous production in high-stakes control cabinets, this drive delivers robust protection against control interruption, signal drift, power fluctuation, and unplanned downtime — making it a trusted choice for critical interlock loops and heavy-duty automation systems.

Every unit shipped from KNMKS undergoes full functional testing prior to dispatch, backed by a support terms confirmed by quotation and guaranteed in-stock availability for immediate deployment or emergency spare replacement.

Fail-Safe Reliability Table

Control Cabinet Protection Strategy

In a well-engineered industrial control cabinet, the 1336-B005-EAD-FA2-L1-S1 operates as the core motor speed regulation node, but its reliability depends on the integrity of the surrounding system architecture. To maintain fail-safe operation under high electromagnetic interference, voltage transients, and thermal stress, this drive is commonly deployed alongside complementary protection and control components.

A 1336-MOD-FA2 Safe-Off option module is typically integrated directly into the drive to enable hardwired safety interlock circuits, ensuring the motor de-energizes safely during emergency stop events without relying solely on software commands. For upstream power quality, a 1321-3R3-B line reactor is recommended to suppress voltage spikes and reduce harmonic distortion entering the drive’s rectifier stage — a critical measure in facilities with heavy switching loads or shared bus architectures.

Communication integrity in distributed control systems is maintained through 1203-GU6 DeviceNet communication modules or 1203-SSS SCANport adapters, which allow the drive to exchange real-time status, fault codes, and speed references with a supervisory Allen-Bradley ControlLogix or CompactLogix PLC. This closed-loop feedback architecture eliminates signal drift and enables predictive fault detection before a process upset occurs.

For cabinet thermal management — especially in high-ambient or poorly ventilated enclosures — pairing this drive with a 1336-BRF-SP2 dynamic braking resistor and an appropriately rated Allen-Bradley 800T series emergency stop pushbutton completes a robust, code-compliant safety circuit. Together, these components form a layered defense against surge impact, cabinet overheating, communication anomalies, and unplanned shutdown events.

Critical Industrial Safety Applications

The Allen-Bradley 1336-B005-EAD-FA2-L1-S1 is deployed across a wide range of safety-critical industrial sectors where motor control reliability directly impacts process continuity and personnel safety.

In petrochemical and refinery facilities, this drive controls pump and compressor motors in hazardous zones where an uncontrolled stop or speed surge can trigger pressure relief events or process upsets. Its Safe Torque Off (STO) capability allows integration into IEC 62061 / ISO 13849 safety-rated interlock loops without additional external contactors.

In electric power generation and substation auxiliary systems, the drive manages cooling fan motors and auxiliary pump drives where continuous availability is non-negotiable. Its built-in EMC filter (EAD option) suppresses conducted emissions that could interfere with protection relays and SCADA communication networks operating in the same switchgear room.

In mining and mineral processing, conveyor belt drives and slurry pump motors operating in dusty, high-vibration environments benefit from the drive’s robust fault detection and automatic restart logic, reducing manual intervention and improving uptime in remote or underground installations.

In water and wastewater treatment plants, the 1336-B005-EAD-FA2-L1-S1 provides precise flow control for dosing pumps and aeration blowers, where speed accuracy directly affects treatment chemistry and regulatory compliance. Its undervoltage ride-through capability maintains process stability during grid fluctuations common in utility-connected facilities.

In metallurgical and steel production environments, the drive’s overtemperature protection and thermal modeling algorithms prevent motor burnout during extended high-load cycles, while its DPI communication port enables seamless integration with plant-wide MES and historian systems for predictive maintenance programs.

In port, marine, and shipboard applications, where space is constrained and power quality is variable, this compact drive’s surge suppression and ground fault detection capabilities protect motor windings and reduce the risk of electrical fires in enclosed machinery spaces.

Safety and Quality FAQ

Q1: What does the support terms confirmed by quotation cover for the 1336-B005-EAD-FA2-L1-S1?
The support terms confirmed by quotation cover all functional defects identified under normal operating conditions, including drive board failures, power module faults, and communication interface malfunctions. Each unit is pre-tested before shipment. In the event of a confirmed defect, KNMKS provides repair, replacement, or full technical support within the confirmed support period.

Q2: How is each unit tested before shipment?
Every 1336-B005-EAD-FA2-L1-S1 unit undergoes a full power-on functional test, fault code verification, and output voltage/frequency sweep prior to packaging. Units that fail any test parameter are quarantined and not shipped. A test record is available upon request for quality-critical procurement processes.

Q3: Is this drive compatible with existing Allen-Bradley 1336 PLUS installations and SCANport peripherals?
Yes. The 1336-B005-EAD-FA2-L1-S1 is fully compatible with the 1336 PLUS hardware platform, including all SCANport-connected HIM modules, communication adapters, and option cards. It can serve as a direct drop-in replacement for existing 1336 PLUS drives of the same power rating without requiring PLC program modifications in most standard configurations.

Q4: Can long-term supply and spare parts availability be guaranteed?
KNMKS maintains dedicated inventory of the 1336-B005-EAD-FA2-L1-S1 and related 1336 PLUS series components to support ongoing MRO (Maintenance, Repair, and Operations) procurement. For facilities requiring guaranteed spare availability under a service contract or planned maintenance schedule, contact our sales team to discuss reserved stock arrangements and lead-time commitments.

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Product Identification

Brand / Ecosystem

Allen-Bradley
Allen-Bradley

Model / Series

1336-B005-EAD-FA2-L1-S1

Product Family

Variable Frequency Drives

Availability Status

Available on request after model and quantity confirmation

Inquiry Type

B2B RFQ, replacement inquiry and project spare-part request

Pre-Quote Check

Exact SKU, brand, series, quantity, nameplate photos and destination country are checked before quotation

Specification & Inquiry Focus

Drive range

AC drives, VFDs and accessories

Common needs

Voltage, kW/HP and load type

Project support

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

What to Send Us

• Brand and exact model number: Allen-Bradley 1336-B005-EAD-FA2-L1-S1
• Quantity and required delivery time
• Application, replacement requirement or nameplate photo
• Destination country and shipping preference