The Allen-Bradley 8500-1746I is a specialized adapter interface module designed for the 8500 series. This module serves as a high-speed communication bridge, enabling Bulletin 1746 SLC I/O modules to be deployed in remote locations, physically separated from the main controller. Acting as a dedicated microcomputer, the module manages the exchange of control data between the SLC-500 PLC and distributed field devices, providing the flexibility required for complex industrial system architectures.
Features
Facilitates remote I/O communication for SLC-500 systems.
Utilizes the I/O RING protocol for high-speed, reliable data transmission.
Enables local processing of I/O signals to reduce latency in distributed applications.
Designed for integration with Bulletin 1746 I/O hardware.
Applications
This module is ideal for large-scale industrial environments where sensors, actuators, and other field devices are located at a significant distance from the main electrical cabinet. It is commonly used in distributed control systems where centralized processing is required but physical I/O distribution is necessary for cabling efficiency.
Technical Specifications
Brand
Allen-Bradley
Product Line
8500 Motors / SLC 500
Module Type
Adapter Interface
Communication Protocol
I/O RING
Operating Voltage
5V DC (via backplane)
Current Consumption
470 mA
Thermal Dissipation
2.49 Watts (8.4962 BTU/hr)
Operating Temperature
Max 60 degC (140 degF)
Environmental Rating
IP20
Installation Guidelines
Ensure the system power is disconnected before installing or removing the module from the backplane.
Verify that the module is securely seated in the chassis slot to ensure proper backplane connection.
Follow standard ESD (Electrostatic Discharge) handling procedures when touching internal components.
Ensure adequate ventilation in the cabinet to maintain operating temperatures below 60 degC.
Route communication cables away from high-voltage lines and sources of electromagnetic interference (EMI) to maintain signal integrity.
FAQ
What is the primary function of the 8500-1746I?
The 8500-1746I acts as a communication adapter that allows SLC-500 I/O modules to operate in remote locations, effectively extending the reach of the PLC system using the I/O RING protocol.
Can this module be used with standard SLC-500 processors?
Yes, it is designed to bridge communication between the SLC-500 PLC and distributed 1746 I/O modules.
