Overview
The Allen-Bradley 1746-IV16 is a SLC 500 discrete input module designed to interface 16 sourcing input points with field devices such as sensors, switches, and auxiliary contacts. This module accepts a nominal input voltage of 24VDC with operating voltage range of 10-30VDC. The 1746-IV16 is commonly deployed in existing SLC 500 installations for general-purpose DC input applications.
Key Features
- 16 sourcing input channels for interfacing electrical signaling devices such as switches, auxiliary contacts, and sensors that provide binary or ON/OFF signal states
- Supports source wiring configuration, allowing the module to provide signal voltage to the input loop when field devices cannot supply it
- Removable terminal blocks, eliminating the need to disconnect wires and making module replacement easy
- Filter circuitry and optical coupling for signal noise reduction
- LED indicators that show input status ratings for easy troubleshooting
- Occupies single slot of the chassis, maximizing available slots
Technical Specifications
- Input Voltage (Nominal): 24VDC, operating range 10–30VDC
- Number of Inputs: 16 points
- Input Current: 8 mA @ 24V DC nominal
- Backplane Current Load @ 5V: 85 mA
- Signal Delay (On): 0.3 ms
- Signal Delay (Off): 0.5 ms
- Operating Temperature: 0 to 60 degrees Celsius (32 to 140 degrees Fahrenheit)
- Humidity Range: 5 to 95% noncondensing relative humidity
- Mounting: Single chassis slot
- Terminal Connection: Removable screw terminal blocks
- Input Type: Sourcing (current sourcing DC input)
Typical Applications
The 1746-IV16 is ideally used for interfacing electrical signaling devices such as switches, auxiliary contacts, sensors and other devices that provide binary or ON/OFF signal states. This current sourcing DC input module works with general purpose DC inputs applications. Expansion rack and remote I/O racks are both supported by the 1746-IV16.
Compatibility & Replacements
Compatible With
- SLC 500 fixed controllers and processors
- SLC 500 expansion racks and remote I/O racks
- Allen-Bradley SLC 500 system series (all models)
- Ladder Logic programming platforms for SLC 500
Replaces / Drop-In Replacement For
The 1746-IV16 is a standard 16-point sourcing input module for SLC 500 systems. Verify compatibility with your system integrator before ordering to confirm fit within your existing automation architecture.
Works With
- Allen-Bradley SLC 500 Ladder Logic programming
- RSLogix 500 and Studio 5000 (with appropriate drivers)
- SLC 500 processors (1747-L series and equivalent)
- 24VDC field devices: proximity sensors, pushbuttons, solenoid pilot coils, limit switches, and other discrete input signals
