1. Overview

• Name: 1336-MOD-L1
• Type: 5V DC TTL Logic Interface Board (Signal Conditioner Board)
• Application Scope: Suitable for Allen-Bradley 1336 series AC variable frequency drives (e.g., 1336-2000, 1336-3000, 1336-5000, etc.)
• Core Function: Equipped with 12 TTL logic level input/output terminals to realize digital transmission of motor control commands (such as start, stop, direction selection)

2. Specifications

• Supply Voltage: Built-in +5V DC power supply, no external power required
• Number of Interfaces: 12 dual in-line screw terminals
• Signal Level:

  Input Impedance: 250 Ω (standard TTL level characteristic)

• High Level (1): +5V DC
• Low Level (0): 0V DC
• Rated Current: < 500 mA (per terminal)

3. Product Features

• High Compatibility: Complies with 5V TTL standards, and can be directly connected to standard devices such as PLCs, proximity switches, button switches, and photoelectric switches
• Isolation Safety: Designed to isolate control signals from the main circuit, preventing electrical noise interference
• Built-in Power Supply: Integrates a voltage stabilizing circuit, no additional power supply needed, and easy to install
• Flexible Installation: Directly inserted into the drive main board through the PCB slot, supporting screw fixation

4. Structure and Composition

• Main Circuit Board: Responsible for signal level conversion and regulated power supply
• Terminal Block: 12 tighten able terminal blocks for connecting external signal lines
• PCB Slot: Slot interface for inserting into the drive main control board

5. Application Fields

• Industrial Automation: Used in equipment requiring precise logic control such as CNC machine tools, injection molding machines, and packaging machinery
• Mechanical Engineering: Realizes logic function control such as motor start, stop, emergency stop, and steering (forward/reverse rotation)
• Signal Isolation: Protects PLCs or controllers from electrical interference in high-noise environments

6. Installation and Maintenance

Installation Steps

1. Power Off Operation: Perform installation in a power-off state to prevent electric shock or damage to the drive
2. Remove Bridge Components: Remove the original bridge jumper on the main control board before installation
3. Insert Connection: Insert the MOD-L1 into the designated slot of the main control board through the plug
4. Fixed Installation: Firmly fix it in the drive chassis with two fixing screws

Maintenance Points

• Avoid electrostatic discharge (ESD) to prevent damage to the circuit
• Regularly check whether the terminal connections are loose or corroded
• Adjust or replace the module in a power-off state to ensure safety