Allen-Bradley 1336-L4 Original Industrial Spare 1336 Drive Compatible

Product Overview

Allen-Bradley 1336-L4 Original Industrial Spare 1336 Drive Compatible: System Stability & Maintenance Value

The Allen-Bradley 1336-L4 (42336-200-51) Encoder Interface Card is a critical original spare component for the 1336 PLUS / 1336 PLUS II / 1336 IMPACT Drive Series. Designed to provide closed-loop speed and position feedback from incremental encoders directly to the drive’s control board, this card is essential for maintaining precise motor control in demanding industrial automation environments. Whether you are managing a scheduled overhaul, responding to an unplanned drive fault, or building a strategic spare parts inventory, the 1336-L4 delivers the OEM-grade reliability your production line depends on.

At TOPNLMS, every 1336-L4 unit is sourced from verified supply channels, functionally tested prior to dispatch, and backed by a 12-month warranty. We ship globally with full documentation support to minimize your downtime and simplify your procurement process.

Critical Technical Specs

Preventive Maintenance Strategy

The 1336-L4 encoder interface card sits at the heart of your drive’s closed-loop control architecture. When planning a preventive maintenance cycle or responding to a drive fault, it is rarely sufficient to replace only the encoder card in isolation. A comprehensive inspection of the entire drive cabinet and associated control loop is strongly recommended to prevent repeat failures and extend system service life.

During a 1336 Drive cabinet inspection, maintenance engineers should simultaneously evaluate the 1336-MOD-L2 communication module for DeviceNet or DH+ connectivity integrity, as communication faults often accompany encoder feedback errors. The 1336-PB power board and associated 1336-DB dynamic braking resistor module should be checked for thermal stress and capacitor aging, particularly in high-cycle applications. If the drive is operating in a dusty or high-humidity environment, the 1336-FAN cooling fan assembly should be inspected and replaced on a scheduled basis to prevent thermal shutdown events that can damage the control board and option cards simultaneously.

On the motor side, verify the integrity of the encoder cable assembly — shielded, twisted-pair cabling rated for the encoder’s differential signal — as cable degradation is one of the most common root causes of encoder feedback faults. Inspect the motor terminal box and encoder connector for corrosion, loose pins, or mechanical damage. At the same time, review the condition of the 1336 drive I/O terminal strip and any associated relay output modules used for run/fault signaling to the PLC or DCS system.

For facilities running Allen-Bradley ControlLogix or CompactLogix PLCs in conjunction with 1336 drives, it is advisable to audit the 1756-ENBT or 1756-DNB communication modules in the PLC rack to confirm that drive status data is being received correctly. A faulty encoder card can generate misleading fault codes that propagate upstream into the PLC program, causing unnecessary production stops. Keeping a spare 1336-L4 encoder interface card alongside a spare 1336-MOD-L2 communication module and a set of 1336 drive fuse kits in your local storeroom is a proven strategy for reducing mean time to repair (MTTR) in AC drive-intensive production lines.

Finally, for older 1336 PLUS installations approaching end-of-life, consider auditing the 1336 drive control board (main PCB) for electrolytic capacitor bulging or leakage. Proactive replacement of the control board — combined with a fresh 1336-L4 encoder card — can extend the operational life of the drive by several years, deferring costly full-drive replacement and preserving compatibility with existing motor and mechanical infrastructure.

Strategic Replacement Solutions

The Allen-Bradley 1336 Drive Series has been a backbone of industrial motor control for decades, and many facilities continue to operate these drives well beyond their original design life. Sourcing original spare parts such as the 1336-L4 42336-200-51 is the most reliable strategy for maintaining system compatibility without the risk and cost of a full drive retrofit.

Unlike third-party aftermarket cards, the original 1336-L4 is firmware-compatible with all 1336 PLUS and 1336 PLUS II drive revisions, eliminating the need for parameter re-commissioning or control board modifications. This is particularly valuable in regulated industries — food and beverage, pharmaceutical, water treatment — where any change to the drive configuration may trigger a revalidation process. By replacing only the failed option card with an identical OEM part, maintenance teams can restore full drive functionality within a single shift, minimizing production impact.

For facilities managing multiple 1336 drives across a plant, a centralized spare parts strategy — holding at least one 1336-L4 per drive type in inventory — is strongly recommended. The cost of a single unplanned production stop typically exceeds the value of an entire spare parts kit by a significant margin. TOPNLMS supports bulk procurement inquiries and can assist with multi-unit sourcing for plant-wide maintenance programs.

Support FAQ

Q1: Is the 1336-L4 (42336-200-51) compatible with both 1336 PLUS and 1336 PLUS II drives?
Yes. The 1336-L4 encoder interface card is compatible with the Allen-Bradley 1336 PLUS, 1336 PLUS II, and 1336 IMPACT drive families. Always verify your drive’s firmware revision against the option card compatibility matrix in the 1336 PLUS User Manual (publication 1336 PLUS-5.0) before installation.

Q2: What pre-shipment testing is performed on each unit?
Every 1336-L4 unit dispatched by TOPNLMS undergoes functional verification testing prior to shipment. Units are inspected for physical integrity, connector condition, and basic electrical continuity. A test report is available upon request for quality-critical procurement processes.

Q3: What does the 12-month warranty cover?
The 12-month warranty covers manufacturing defects and functional failures under normal operating conditions. It does not cover damage resulting from incorrect installation, overvoltage events, or physical mishandling. Warranty claims are processed promptly — contact [email protected] with your order reference and a description of the fault.

Q4: Can I use the 1336-L4 to replace an older or different revision of the encoder card in my existing drive?
In most cases, yes. The 1336-L4 is the standard encoder interface option card for the 1336 Drive Series and is designed as a direct plug-in replacement. However, if your drive is running a very early firmware revision, consult the drive’s option card compatibility documentation or contact our technical support team before ordering to confirm fitment.