The Allen-Bradley 1746-IV32 is a high-density digital DC input module engineered for the SLC 500 programmable controller platform. This module provides 32 sourcing input points within a single-slot footprint, offering a space-efficient solution for complex automation systems requiring high I/O density. It is specifically designed to interface with field devices that sink current to a common return path.
Features
High-Density Design: Features 32 discrete input points in a single-slot module.
Input Grouping: Inputs are divided into four isolated groups of eight, allowing for flexible power configuration and voltage referencing.
Sourcing Inputs: Designed for compatibility with sinking-type field output devices.
Connectivity: Utilizes a high-density 40-pin connector, suitable for use with pre-wired cable assemblies or 1492 interface modules.
Flexible Power Range: Supports 15–30V DC operation at 50 degC.
Technical Specifications
Model
1746-IV32
Product Line
SLC 500
Input Type
32-Point Sourcing DC Input
Group Configuration
4 groups of 8 points
Voltage Range
15–30V DC (at 50 degC) / 15–26.4V DC (at 60 degC)
On-State Voltage (Min)
15.0V DC
Off-State Voltage (Max)
5.0V DC
Input Current
5.1 mA at 24V DC
Off-State Current (Max)
1.5 mA
Signal Delay
3 ms (ON) / 8 ms (OFF)
Backplane Current (5V DC)
106 mA
Operating Temperature
0 to 60 degC (32 to 140 degF)
Relative Humidity
5 to 95% (non-condensing)
Installation Guidelines
Safety First: Ensure the power to the SLC 500 chassis is disconnected before installing or removing the module to prevent electrical damage or injury.
Module Seating: Carefully align the module with the chassis guide rails and push firmly until the locking mechanism engages.
Wiring: Due to the 40-pin connector, use appropriate pre-wired cables or terminal blocks. Ensure all connections are secure and strain-relieved.
Environment: Maintain proper ventilation in the enclosure to keep ambient temperatures within the specified 0–60 degC range.
Grounding: Follow standard industrial grounding practices to minimize electromagnetic interference (EMI) and ensure signal integrity.
FAQ
What does the 'IV' in 1746-IV32 represent? The 'IV' signifies that this is a sourcing input module, intended for use with field devices that sink current.
Can I use standard screw terminals with this module? No, this high-density module requires a 40-pin connector cable assembly or a compatible 1492 interface module for field wiring connections.
How are the 32 inputs organized? The inputs are organized into four electrically isolated groups, with eight points per group, allowing for segmented power supplies if required.
