Overview
The Allen-Bradley 1336-MOD-L1 is a logic interface option module designed for use with Bulletin 1336 adjustable frequency AC drives. This TTL logic contact closure board accepts 5 VDC digital inputs and translates them into drive control commands, eliminating the need for analog signal conditioning. It enables secure, noise-immune digital control via contacts or PLC outputs.
Key Features
- 5 VDC TTL (Transistor-Transistor Logic) input interface for robust signal recognition
- Contact closure terminal compatibility for start, stop, jog, and reverse functions
- Self-powered design—no external power supply required
- NEMA Type 4 enclosure rated for water and dust exposure
- Short-circuit, ground-fault, and under/over-voltage protection built-in
- Humidity tolerance: 5% to 95% non-condensing
- Operating temperature range up to 60°C; storage to 70°C
Technical Specifications
- Voltage Rating: 5 VDC TTL logic input
- Interface Type: TTL contact closure (momentary or maintained)
- Input Logic: Transistor-Transistor Logic (TTL) standard levels
- Enclosure: NEMA Type 4 (IP54)
- Operating Temp: 0 to 60°C
- Storage Temp: -40 to 70°C
- Humidity: 5% to 95% non-condensing (operating and storage)
- Maximum Altitude: 2000 meters above sea level
- Form Factor: Open-style PCB with plugin connectors
- Mounting: Direct connector to 1336 drive main control board
- Certifications: CE, UL, CSA (as part of complete drive system)
- Compatible Drives: Bulletin 1336 series variable frequency drives
- Part Family: 1336-MOD series (also available: L2, L3 variants)
Typical Applications
- Legacy 1336 drive retrofits requiring contact-based control logic
- Replacement of worn or failed logic interface boards
- Integration with hardwired pushbutton stations, relay circuits, or discrete PLC outputs
- Industrial motor control requiring TTL-level digital inputs
- HVAC, pump, fan, and conveyor drive control systems
- Maintenance upgrades on operating 1336 installations
Compatibility & Replacements
The 1336-MOD-L1 is a factory-authorized option module for the Rockwell Automation Bulletin 1336 adjustable frequency drive series. It is installed as a plug-in card on the main control board and receives discrete 5 VDC TTL-level contact closure signals. The L1 variant supports basic start/stop/jog/reverse control; Rockwell also offers L2 and L3 versions with expanded input/output capacity. This module is widely used as a replacement part in industrial service and is not interchangeable with logic modules from other manufacturers. Surplus and refurbished units are commonly available through authorized surplus distributors.
