Why Choose a 32-Channel Input Module for Your SLC 500 System?
When expanding discrete input capacity in an SLC 500 control system, engineers often face the challenge of balancing channel density with reliability. The Allen-Bradley 1746-IB32 addresses this need by offering thirty-two sink input channels in a single module, reducing the number of slots required. This module is designed for general-purpose DC inputs, interfacing with switches, sensors, and auxiliary contacts.
Overview of the 1746-IB32
The Allen-Bradley 1746-IB32 is a digital DC input module from the SLC 500 series, manufactured by Rockwell Automation. It operates at a nominal voltage of 24VDC and accepts a signal voltage range of 15-30VDC at 50 degrees Celsius, or 15-26.4VDC at 60 degrees Celsius. This module provides thirty-two sinking input channels, each with a signal delay of 3 milliseconds for both ON-to-OFF and OFF-to-ON transitions.
Key Technical Specifications and Performance
The 1746-IB32 draws a backplane current of 0.05 A at 5 Volts, with a power dissipation of 6.65 Watts per module and 0.20 Watts per channel. It offers a shock rating of 30G and an off-state current of 1 milliamps. The module uses 1746-HT and 1746-HCA I/O connections, and its step response is 100 milliseconds in and 2.5 milliseconds out. These specifications make it suitable for reliable operation in industrial environments.
Application Scenarios for the 1746-IB32
In manufacturing lines, the 1746-IB32 can monitor the status of multiple limit switches or proximity sensors, providing real-time feedback to the SLC 500 controller. For material handling systems, it can read the state of conveyor belt sensors or safety interlocks. The module's 32 inputs allow for efficient wiring of numerous discrete devices without needing multiple smaller modules.
Compatibility and Integration with SLC 500 Systems
The 1746-IB32 is compatible with any SLC 500 processor and can be installed locally in the controller chassis, in an expansion I/O rack, or in a remote I/O chassis via an SLC 500 communication adapter. It directly installs into any available slot of a 1746 chassis, except slot 1 which is reserved for the controller. The module does not support Removal and Insertion Under Power (RIUP), so power must be removed before installation or removal.
Frequently Asked Questions About the 1746-IB32
What is the input voltage range for the 1746-IB32?
The 1746-IB32 operates with a signal voltage range of 15-30VDC at 50 degrees Celsius and 15-26.4VDC at 60 degrees Celsius. The nominal input voltage is 24VDC.
How many input channels does the 1746-IB32 provide?
The module provides thirty-two (32) sink input channels, allowing connection of up to 32 discrete input devices such as switches or sensors.
What is the signal delay time for the 1746-IB32?
The signal delay for both OFF-to-ON and ON-to-OFF transitions is 3 milliseconds, ensuring fast response for monitoring applications.
Can the 1746-IB32 be used in a remote I/O configuration?
Yes, the module can be installed in a remote I/O chassis along with an SLC 500 communication adapter, as well as in local or expansion racks.
Company Strength and Supply Assurance
Petro Auto Tech offers the Allen-Bradley 1746-IB32 as part of its extensive inventory of industrial automation parts. With a focus on quality and availability, Petro Auto Tech supports customers in finding the right components for their SLC 500 systems. Please verify current lifecycle status and availability with Petro Auto Tech before ordering.
