1756-IG16 Allen-Bradley | ControlLogix 16 Pt 5VDC D/I Module

Overview

The Allen-Bradley 1756-IG16 is a high-performance 16-point digital DC input module designed for use with the ControlLogix system. This module provides reliable input processing for TTL (Transistor-Transistor Logic) signals, operating with 5V DC TTL sources. With a sleek design, it ensures that your industrial automation systems run smoothly with a robust performance. Ideal for precision applications, it guarantees fast response times with a user-selectable filter time, making it an excellent choice for critical industrial environments.

Key Technical Specifications

• Brand: Allen-Bradley (Rockwell Automation)
• Model: 1756-IG16 (ControlLogix Digital DC Input Module)
• Inputs: 16 points (9 per common)
• Input Voltage: 5 Volts DC TTL source (Low = True)
• Operating Voltage Range: 4.5–5.5 Volts DC
• Input Delay Time: 0.25 milliseconds plus selected filter time
• Maximum Input Current (Off-State): 4.1 milliamps
• Maximum Power Dissipation: 1.4 Watts at 60°C
• Backplane Current at 5V DC: 110 milliamps
• Terminals: Compatible with 1756-TBNH or 1756-TBSH removable terminal blocks
• Temperature: 60°C (maximum power dissipation of 1.4 Watts)

Ordering Information

To connect the 1756-IG16 to a ControlLogix 1756 chassis, the module requires a removable terminal block. Users can choose between the 1756-TBNH or 1756-TBSH terminal block housing for optimal installation.

Voltage Range and Input Behavior

The 1756-IG16 operates within a voltage range of 4.5 to 5.5 V DC, with a maximum ripple of 50 millivolts P-P. The input state follows a TTL logic, meaning the module is “On” when the voltage is low (0.2 to 0.8 Volts DC) and “Off” when the voltage is between 2.0 to 5.5 Volts DC. This ensures seamless integration with TTL-based systems.

FAQ

1. What is the operating voltage for the 1756-IG16 module?

   • The module operates within a voltage range of 4.5 to 5.5 Volts DC.

2. Can I use the 1756-IG16 in high-temperature environments?

   • Yes, the module can operate at temperatures up to 60°C with a maximum power dissipation of 1.4 Watts.

3. Which terminal blocks are compatible with the 1756-IG16?

   • The module is compatible with the 1756-TBNH and 1756-TBSH removable terminal blocks.

4. What is the input delay time for the module?

   • The module has a nominal input delay time of 270 microseconds for “off” to “on” transitions, with a maximum of 450 microseconds plus the filter time.

5. Is the input state guaranteed at 0.8-2.0 Volts?

   • No, the input state is not guaranteed within this voltage range.

Check official datasheet for more detailed information: ControlLogix and GuardLogix Controllers