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Description
The Allen-Bradley 1746-IO8 is a combination input/output module designed for use within the SLC 500 programmable controller platform. This module provides a versatile solution for applications requiring a mix of discrete signal monitoring and relay-based control. Featuring 4 inputs and 4 relay outputs, it integrates seamlessly into the SLC 500 chassis, allowing for efficient I/O configuration in space-constrained control systems.
Features
- 4 discrete inputs for monitoring field device status.
- 4 relay outputs suitable for switching external loads.
- Compatible with the Allen-Bradley SLC 500 modular hardware architecture.
- Operating voltage range of 85-132 VAC for industrial AC control environments.
- Integrated signal delay characteristics (35-45 milliseconds) to ensure stable logic processing.
Technical Specifications
| Model |
1746-IO8 |
| Manufacturer |
Allen-Bradley |
| Product Type |
Combination Input/Output Module |
| Inputs |
4 |
| Outputs |
4 (Relay) |
| Operating Voltage |
85-132 VAC |
| Output Current (24VDC) |
1.2 A |
| Signal Delay |
35-45 ms |
| Tariff Code |
8537101190 |
Installation Guidelines
- Ensure the SLC 500 chassis is powered down before inserting or removing the 1746-IO8 module to prevent electrical damage.
- Verify that the module is fully seated in the chassis slot and secured with the top and bottom retaining screws.
- Use appropriate shielded cabling for input/output signals to minimize interference from high-voltage or high-frequency equipment.
- Maintain proper grounding practices for the chassis to ensure reliable operation and safety.
- Check that the field wiring complies with the specified voltage ratings (85-132 VAC) to avoid exceeding the relay contact limits.
FAQ
Is the 1746-IO8 still available from the manufacturer?
No, this model has been discontinued by the manufacturer. We supply tested, reliable units to support legacy system maintenance.
What is the primary function of this module?
The 1746-IO8 is a combination module that saves rack space by providing both input sensing and relay output control within a single slot of an SLC 500 system.
