The Allen-Bradley 1746-HT is a specialized termination panel designed for use within the SLC 500 control system architecture. This module facilitates organized field wiring connections and signal distribution for I/O applications. It is engineered to support high-speed input requirements, making it suitable for demanding industrial control tasks such as encoder interfacing, drive signal management, and emergency stop (E-Stop) monitoring. The unit ensures reliable connectivity between field devices and the PLC backplane.
Features
Designed for high-speed I/O applications with input frequency support up to 250 kHz.
Integrated support for multiple voltage levels including 5VDC, 15VDC, and 24VDC for external power distribution.
Provides a robust interface for encoder signals and drive control integration.
Optimized for DIN rail or rack mounting configurations to ensure stable installation within industrial enclosures.
Low power consumption from the SLC 500 backplane.
Technical Specifications
Model Number
1746-HT
Input Frequency
250 kHz
Backplane Current (5V)
200 mA
Backplane Current (24V)
90 mA
Mounting Type
Rack / DIN Rail
Output Type
Digital
Installation Guidelines
Ensure the PLC system is completely powered down before installing or removing the termination panel.
Use appropriate ESD protection when handling the module to prevent damage to internal circuitry.
Secure the module firmly to the DIN rail or rack system to prevent vibration-induced loosening of connections.
Route signal cables away from high-voltage lines or high-EMI sources to maintain signal integrity, particularly for high-frequency encoder inputs.
Verify that all external power supply connections (5V, 15V, 24V) match the specified requirements of the connected field devices before energizing the system.
FAQ
What is the primary function of the 1746-HT? The 1746-HT serves as a termination panel for the Allen-Bradley SLC 500 system, providing a centralized point for connecting field wiring for fast I/O, encoders, and safety-related signals.
Does this module require external power? Yes, the module is designed to interface with external power sources of 5VDC, 15VDC, and 24VDC to support the connected field devices.
Can this unit be used for high-speed encoder inputs? Yes, the 1746-HT is rated for input frequencies up to 250 kHz, making it compatible with high-speed encoder applications.
