وصف
The Allen-Bradley 1756-IA16 is a high-performance digital AC input module designed for the ControlLogix platform. This module provides 16 input points, organized into two groups of 8 points each, and is engineered for reliable operation in industrial environments requiring 120V AC signal monitoring.
Features
- Sixteen (16) isolated input points for flexible signal monitoring.
- Compatible with 74-132V AC voltage ranges at 50/60 Hz frequencies.
- Programmable input delay times of 9 or 18 milliseconds to filter signal noise.
- Low power consumption with a backplane current draw of 100 mA at 5.1V DC.
- Seamless integration with the Allen-Bradley ControlLogix backplane architecture.
Technical Specifications
| Module Type |
Digital AC Input |
| Number of Inputs |
16 (8 points per group) |
| Operating Voltage |
74-132V AC, 50/60 Hz |
| Min. ON-state Current |
5 mA @ 79V AC |
| Backplane Current (5.1V) |
100 mA |
| Total Backplane Power |
0.58 W |
| Cyclic Update Time |
200 microseconds to 750 milliseconds |
Installation Guidelines
- Ensure the ControlLogix chassis is powered down before inserting or removing the 1756-IA16 module to prevent electrical damage.
- The module must be seated firmly into the chassis slot; secure using the integrated latching mechanism.
- Use appropriate shielded cabling for input signals to minimize electromagnetic interference (EMI) in high-noise environments.
- Verify that the field-side AC power supply matches the module input voltage specifications before applying power.
- Maintain proper ventilation around the chassis to ensure optimal operating temperatures.
FAQ
What is the primary function of the 1756-IA16?
The 1756-IA16 is a digital input module used to interface 120V AC field signals with a ControlLogix controller, allowing the system to monitor the status of external devices like switches, sensors, or relays.
Can the input delay be adjusted on this module?
Yes, the input delay time is programmable and can be set to either 9 or 18 milliseconds depending on the specific application requirements for signal debouncing.
Is this module compatible with other ControlLogix chassis?
Yes, the 1756-IA16 is designed to fit into any standard ControlLogix I/O chassis, provided there is an available slot and the power supply can support the additional current draw.
