The Allen-Bradley 1746-IO12DC is a combination I/O module designed for the SLC 500 programmable controller system. This module provides a versatile solution for control applications requiring a mix of digital input and relay output functionality within a single slot. Please note that this product was discontinued by the manufacturer as of August 31, 2018.
Features
Integrated design featuring 6 digital inputs and 6 relay outputs.
Operates within a 10-30 VDC voltage range for input signals.
Reliable relay outputs capable of handling industrial switching loads.
Compact SLC 500 form factor, occupying a single chassis slot.
Designed for integration into existing SLC 500 rack-based PLC systems.
Technical Specifications
Model Number
1746-IO12DC
Module Type
Combination Input/Output
Input Points
6
Output Points
6 (Relay)
Voltage Rating
10-30 VDC
Output Current Rating
1.5 Amp (per point)
Manufacturer
Allen-Bradley
Installation Guidelines
Ensure the SLC 500 chassis power is disconnected before installing or removing the module to prevent electrical damage or system faults.
Align the module carefully with the chassis backplane connector to ensure proper seating.
Secure the module using the top and bottom retaining screws to maintain a stable connection and grounding.
Route input and output wiring away from high-voltage power cables to minimize electromagnetic interference (EMI).
Verify that the field wiring terminal block is securely attached and that all connections meet the required torque specifications.
Maintain adequate ventilation around the PLC rack to prevent overheating during operation.
FAQ
Is the 1746-IO12DC still available from the manufacturer? No, this module was discontinued by Allen-Bradley on August 31, 2018. We provide these units as surplus or refurbished components for system maintenance.
What is the primary function of this module? It acts as a combination module, allowing a single slot in an SLC 500 chassis to handle both 6 points of DC input and 6 points of relay output simultaneously.
What should I do if my system reports an I/O error with this module? First, check the module seating in the chassis and verify that all field wiring is secure. If the error persists, check the LED status indicators on the front of the module to diagnose potential signal or power issues.
