The Allen Bradley 1746-IV16 is a 16-channel digital DC sourcing input module for the SLC 500 platform. It is engineered to interface with sinking (NPN) field devices, such as sensors and switches, providing the loop voltage necessary for signal detection in industrial automation systems.
Technical Specifications
- Model: 1746-IV16
- Inputs: 16 Sourcing
- Voltage Category: 24V DC
- Operating Voltage Range: 10–30V DC
- Backplane Current (5V DC): 85 mA
- Nominal Input Current: 8 mA @ 24V DC
- Maximum Signal Delay: 8 ms (On/Off)
- Off-State Voltage (Max): 5V DC
- Heat Dissipation: 3.6 Watts
- Manufacturer: Rockwell Automation
Key Features
- Sourcing configuration designed specifically for NPN-style field devices
- Removable Terminal Block (RTB) allows for easy module replacement without rewiring
- Individual LED status indicators for real-time channel diagnostics
- Integrated filter circuitry and optical coupling for enhanced noise reduction
- Rugged single-slot design compatible with any SLC 500 modular chassis
Compatible Components & Accessories
- 1746-A4, -A7, -A10, -A13 Modular Chassis
- 1746-P1, -P2, -P4 SLC Power Supplies
- 1747-L541, -L551 SLC Processors
- 1746-RT25 Replacement Terminal Block
Industry Applications
- Machine status and limit switch monitoring
- Packaging and labeling system integration
- Conveyor and material handling control
- General purpose 24V DC signal acquisition
Installation & Maintenance Notes
- Ensure the chassis is powered down before module insertion or removal
- Verify field device polarity matches the sourcing input requirements (NPN)
- Tighten terminal screws to 0.9 Nm (8 lb-in) to prevent loose connections
- Regularly inspect LED status for input channel health during routine audits
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TCI Supply is not an authorized Rockwell Automation distributor.
