Product Introduction
When system noise or ground loops threaten signal integrity, the Allen-Bradley 1756-IB16I provides 16 individually isolated input channels to ensure reliable data acquisition. Part of the ControlLogix series, this DigitalDC Input module accepts a 10-30VDC signal range with a nominal 24VDC, making it ideal for interfacing pushbuttons, switches, and auxiliary contacts. The Allen-Bradley 1756-IB16I mounts in any 1756 chassis (except the leftmost slot reserved for processors) and supports local or remote I/O architectures.
Technical Specifications
The Allen-Bradley 1756-IB16I delivers precise performance with the following key parameters from the product database:
| Specification |
Value |
| Input Voltage Range |
10-30 VDC |
| Number of Inputs |
16 individually isolated |
| ON-State Current (min/max) |
2 mA @ 10V DC / 10 mA @ 30V DC |
| Cyclic Update Time |
200 µs to 750 ms |
| Signal Delay, OFF to ON |
Hardware delay 1 ms max + filter time (0, 1, or 2 ms) |
| Signal Delay, ON to OFF |
Hardware delay 4 ms max + filter time (0, 1, 2, 9, or 18 ms) |
| Backplane Current (5.1VDC) |
100 mA |
| Backplane Current (24VDC) |
3 mA |
| Total Backplane Power |
0.58 W |
| Power Dissipation (Max) |
5 W at 60°C |
| Removable Terminal Blocks |
1756-TBCH, 1756-TBS6H |
These specs ensure stable performance even in demanding industrial environments. The Allen-Bradley 1756-IB16I's isolation eliminates ground loops, reducing maintenance and downtime.
Industry Applications
In manufacturing lines, the Allen-Bradley 1756-IB16I connects limit switches and proximity sensors to the control system. Its 16 isolated channels mean one faulty sensor does not affect others — reducing troubleshooting time. In material handling, it monitors conveyor status with fast cyclic updates as low as 200 µs. For asset-intensive industries, the Allen-Bradley 1756-IB16I provides long-term reliability, lowering total cost of ownership.
Compatibility & Integration
The Allen-Bradley 1756-IB16I integrates seamlessly with any ControlLogix chassis. Use the 1756-TBCH or 1756-TBS6H removable terminal block for wiring. The module works in local, remote, or distributed I/O configurations. No special software is needed — standard ControlLogix programming tools configure the filter times and input settings.
Selection Guide & Purchasing Advice
Before buying the Allen-Bradley 1756-IB16I, verify your chassis has an available slot and that you have the correct RTB (1756-TBCH or 1756-TBS6H). Check that your backplane can supply 5.1VDC at 100 mA plus 24VDC at 3 mA. UBEST Automation stocks genuine Allen-Bradley 1756-IB16I modules and offers fast shipping. Contact us at ubest101 for bulk pricing or technical support.