Description
Description
The Allen-Bradley 1746-SIM is an essential diagnostic accessory engineered for the SLC 500 control system. This input simulator module provides a reliable method for testing and validating PLC ladder logic and application code without requiring physical field sensors or switches connected to the I/O rack. Featuring 16 integrated toggle switches, the unit allows maintenance personnel and system integrators to manually trigger discrete input bits, facilitating efficient commissioning and troubleshooting in both laboratory and field environments.
Features
- 16 individual toggle switches for manual input simulation.
- Designed specifically for 24V DC sinking and sourcing I/O modules.
- High-reliability gold-plated contacts to ensure consistent signal integrity.
- Compact design for direct integration with the SLC 500 I/O platform.
- Supports rapid testing of complex control sequences during the development phase.
Applications
This simulator is primarily used during the initial stages of machine development, debugging of PLC programs, and as a portable field tool for diagnostic testing. It is compatible with 24V DC modules, including the 1746-IB16, 1746-ITB16, 1746-IV16, 1746-ITV16, and 1746-IN16 series.
Technical Specifications
| Brand |
Allen-Bradley |
| Product Series |
SLC 500 |
| Device Category |
I/O Simulator |
| Channel Count |
16 |
| Voltage Rating |
24V DC |
| Backplane Current (5V DC) |
215 mA |
| Update Time |
2 ms |
| Operating Temperature |
0 to 60 degC |
| Storage Temperature |
-40 to 85 degC |
| Relative Humidity |
5% to 95% (non-condensing) |
Installation Guidelines
- Ensure the PLC system is powered down before attempting to attach or remove the simulator module.
- This module is intended strictly for 24V DC circuits; do not attempt to use it with high-voltage AC modules, as this will result in immediate hardware failure and safety hazards.
- Align the connector pins carefully with the target I/O module to prevent bent pins or improper seating.
- Verify that the module is securely fastened to the I/O module faceplate before reapplying power.
- Store in a dry, static-controlled environment when not in active use to protect the contact surfaces.
FAQ
Can I use this module with AC input cards?
No, the 1746-SIM is designed exclusively for 24V DC sinking and sourcing modules. Using it with AC modules will likely cause damage to the simulator and the PLC hardware.
Does this module require external power?
The 1746-SIM draws its required operating power directly from the SLC 500 backplane (215 mA at 5V DC).
