Product Overview
The Allen-Bradley 1756-IB16D is a ControlLogix digital DC input module engineered for demanding industrial environments. With 16 diagnostic inputs arranged in groups of four, this module delivers real-time status and fault detection to your control system. It operates within a 10-30 VDC range and is designed for 12/24V DC sink applications, making it a versatile choice for modern automation lines.
Technical Specifications
Below are the key specifications for the Allen-Bradley 1756-IB16D, straight from the manufacturer:
| Specification |
Value |
| Series |
ControlLogix |
| Module Type |
Digital DC Input Module |
| Inputs |
16 Diagnostic Inputs |
| Input Voltage |
12-24 Volts DC Sink |
| Operating Voltage Range |
10-30 Volts DC |
| Input Delay Time |
4 milliseconds plus selected filter time |
| Minimum Operating Current |
2 milliamperes at 10 Volts DC |
| Maximum Operating Current |
13 milliamperes at 30 Volts DC |
| Maximum Input Current, Off-State |
1.5 milliamperes per point |
| Power Dissipation (Max) |
5.8 Watts at 60 degrees Celsius |
| Backplane Current at 5 Volts |
150 milliamperes |
| Removable Terminal Block(s) |
1756-TBCH, 1756-TBS6H |
| UPC |
10612598164490 |
Key Features & Benefits
The 1756-IB16D provides diagnostic capabilities that go beyond standard input modules. It detects no-load conditions, timestamps module faults, and supports pulse tests—all crucial for predictive maintenance and reducing unplanned downtime. Its low power dissipation (5.8W max) and efficient backplane current (150mA) help keep your chassis cool and energy costs down.
Industry Applications
This module suits a wide range of applications, including:
- Manufacturing assembly lines where quick fault isolation is critical.
- Material handling systems that require reliable discrete input monitoring.
- Process control environments needing diagnostic feedback for preventive maintenance.
In each scenario, the 1756-IB16D delivers the diagnostic data needed to keep operations running smoothly.
Installation & Setup
Mount the 1756-IB16D into any 1756 ControlLogix chassis. Use a compatible removable terminal block (RTB) housing—either the 1756-TBCH or 1756-TBS6H—for wiring. Ensure the input voltage stays within the 10-30 VDC range to maintain accurate readings. Follow standard ESD precautions during installation.
Maintenance & Reliability
Routine inspection of wiring and terminal connections helps maintain signal integrity. The module's diagnostic functions can alert you to wire-off conditions, reducing troubleshooting time. With no moving parts and robust solid-state design, the 1756-IB16D offers long service life when operated within specified limits.
Compatibility & Integration
Designed for the ControlLogix platform, this module integrates seamlessly with 1756 backplanes and is programmed via RSLogix 5000 or Studio 5000. It works with 1756-TBCH and 1756-TBS6H terminal blocks, ensuring easy field wiring.
Selection Guide & Purchasing Advice
Before purchasing, verify your chassis compatibility and required terminal block type. Confirm that your power supply meets the 10-30 VDC input range. PLC Source PRO offers genuine Allen-Bradley 1756-IB16D modules with fast shipping and responsive support to keep your operations running.