Description
The Allen-Bradley 1756-IM16I is a high-performance digital input module designed for the ControlLogix platform. This module features 16 individually isolated inputs, providing robust signal processing for 240V AC applications. It is engineered to deliver reliable performance in demanding industrial control environments, ensuring signal integrity through its isolated input architecture.
Features
- 16 individually isolated input points for enhanced channel-to-channel protection.
- Designed for 240V AC nominal input voltage operations.
- Programmable input delay times (9 or 18 ms) for flexible noise filtering and response synchronization.
- Comprehensive status indicators for individual point monitoring.
- Compatible with standard ControlLogix chassis backplanes.
Technical Specifications
| Module Type |
Isolated Digital Input Module |
| Input Points |
16 (Individually Isolated) |
| Input Voltage Range |
159-265V AC |
| Operating Frequency |
60 Hz |
| Min. Operating Current |
5 mA at 159V AC |
| Max. Operating Current |
13 mA at 265V AC |
| Off-State Current (Max) |
2.5 mA |
| Input Delay |
Programmable (9 or 18 ms) |
Installation Guidelines
- Ensure the ControlLogix chassis is powered down before inserting or removing the module to prevent electrical damage.
- Verify that the module is fully seated in the chassis slot and that the locking tab is engaged.
- Use appropriate shielded cabling for AC inputs to minimize electromagnetic interference (EMI).
- Maintain adequate spacing within the cabinet to allow for proper thermal dissipation.
- Follow local electrical codes regarding high-voltage AC wiring and grounding requirements for isolated I/O circuits.
FAQ
What is the primary function of the 1756-IM16I?
This module serves as a digital input interface for the ControlLogix system, specifically handling 240V AC signals with individual channel isolation.
Can I adjust the input delay?
Yes, the input delay time is user-programmable to either 9 or 18 milliseconds, allowing for optimization between signal speed and noise rejection.
