Allen-Bradley 1336T PLUS II AC Drive Modules: 1336T-GTB-SP1A – 1336T-PLCCEE – 74100-833-01 – 74101-500-51

Technical Dossier

Product Details And Specifications

Allen-Bradley 1336T PLUS II Series Technical Notes

The Evolution of 1336T PLUS II Architecture

The 1336T PLUS II is the third-generation successor in Rockwell Automation's 1336 drive family. The lineage begins with the 1336 PLUS (early 1990s), which introduced modular I/O and DeviceNet communication options to the industrial VFD market. The 1336 PLUS II (mid-1990s to 2000s) extended this platform with enhanced DSP-based vector control, expanded fault diagnostics, and a broader power range. The 1336T PLUS II variant introduced an integrated braking transistor (the T designation), making it suitable for applications requiring dynamic braking without an external chopper module — common in crane, hoist, and centrifuge applications.

The 1336T PLUS II communicates via DPI (Drive Peripheral Interface), supporting peripheral modules for DeviceNet, ControlNet, EtherNet/IP, Profibus-DP, and Interbus-S. Its control architecture is based on a closed-loop flux vector algorithm, providing torque regulation without encoder feedback in sensorless mode, or full closed-loop performance with an optional encoder feedback module. The drive entered the Rockwell Automation End of Life (EOL) phase, with active production discontinued. Replacement migration paths include the PowerFlex 400, PowerFlex 40P, and PowerFlex 755 series. Despite EOL status, the 1336T PLUS II remains in active service at thousands of installed sites globally, sustaining strong demand for spare boards, option cards, and replacement assemblies.

1336T PLUS II Full Catalog & Functionalities (SKU List)

The following SKUs represent the verified component catalog for the Allen-Bradley 1336T PLUS II drive series, classified by functional category:

Control & Main Boards

• 1336T-GTB-SP1A: Main control board assembly, PLUS II platform, standard firmware revision
• 1336T-PLCCEE: PLC interface option board, CEE-standard communication bridge module
• 1336T-BRF-SP1A: Base regulator board, flux vector control firmware, field replacement assembly
• 1336T-MCB-SP1: Main control board, standard I/O configuration, DPI-compatible
• 1336T-GT1-SP34B: Gate driver board, IGBT firing circuit, 400V class power structure

I/O & Communication Option Modules

• 1336T-LM1EN: EtherNet/IP communication adapter, DPI peripheral interface, 10/100 Mbps
• 1336T-GM1: DeviceNet communication adapter, Group 2 slave, DPI-compatible
• 1336T-BM1: ControlNet communication adapter, scheduled and unscheduled messaging
• 1336T-MCB-SP2: Enhanced I/O control board, expanded analog/digital I/O count
• 1336T-PBIM: Profibus-DP communication adapter, DPI peripheral interface

Power & Braking Components

• 74100-833-01: Power supply board assembly, internal DC bus regulation, PLUS II chassis
• 74101-500-51: Gate driver power supply, IGBT interface board, mid-range frame size
• 74101-954-52C: Snubber/gate drive assembly, high-voltage power structure interface
• 74103-015-52A: Precharge resistor assembly, DC bus inrush current limiting, frame D/E
• 1336T-BRF-SP2: Braking transistor firing board, dynamic braking circuit, integrated chopper

Encoder & Feedback Modules

• 1336T-ENC-1: Incremental encoder feedback module, quadrature input, closed-loop vector
• 1336T-TSIM: Tachometer signal interface module, analog speed feedback, plus or minus 10V input

Sourcing Hard-to-Find & Obsolete 1336T PLUS II Parts

DriveKNMS supports the following lifecycle extension services for the 1336T PLUS II platform: direct board-level replacement for control and gate driver assemblies; cross-reference matching for superseded part numbers; firmware revision identification to ensure compatibility with existing drive chassis; and long-term consignment sourcing for high-volume MRO customers. For facilities operating multiple 1336T PLUS II units, DriveKNMS recommends maintaining a minimum critical spare inventory of the main control board (1336T-GTB-SP1A or equivalent), gate driver board, and communication adapter to reduce mean time to repair (MTTR).

Quality Control for the 1336T PLUS II Range

Each 1336T PLUS II component processed by DriveKNMS undergoes a structured inspection and functional verification protocol prior to dispatch. Control boards are bench-tested using a dedicated 1336 PLUS II drive chassis under no-load and resistive load conditions, verifying DPI communication handshake, analog I/O signal integrity, and fault relay output continuity. Gate driver boards are tested for IGBT firing pulse symmetry and dead-time accuracy using an oscilloscope-based verification fixture. Power supply assemblies (74100-833-01, 74101-500-51) are load-tested at rated output voltage and current with thermal monitoring over a minimum 30-minute burn-in cycle. Communication option modules (EtherNet/IP, DeviceNet, ControlNet) are verified for network enumeration and parameter read/write via RSLogix 5000 or DriveExplorer software. All tested units are labeled with inspection date, technician ID, and test result before packaging.